Search for very low-mass brown dwarfs and free-floating planetary-mass objects in Taurus (2009)
Quanz, Sascha P., Goldman, Bertrand, Henning, Thomas, Brandner, Wolfgang, Burrows, Adam, Hofstetter, Lorne W.
The number of low-mass brown dwarfs and even free floating planetary mass objects in young nearby star-forming regions and associations is continuously increasing, offering the possibility to study...
Dust Processing and Mineralogy in Protoplanetary Accretion Disks (2009)
Henning, Thomas, Meeus, Gwendolyn
We discuss the different dust components of a protoplanetary disk with a special emphasis on grain composition, size and structure. The paper will highlight the role dust grains play in...
Discovery of the Coldest Imaged Companion of a Sun-Like Star (2009)
Thalmann, Christian, Carson, Joseph, Janson, Markus, Goto, Miwa, McElwain, Michael, Egner, Sebastian, ...
We present the discovery of a brown dwarf or possible planet at a projected separation of 1.9" = 29 AU around the star GJ 758, placing it between the separations at which substellar companions are...
Sabine Reffert, Ralf Launhardt, Saskia Hekker, Thomas Henning, Didier Queloz, Andreas Quirrenbach, ...
Abstract. ESO’s PRIMA (Phase-Referenced Imaging and Micro-arcsecond Astrometry) facility at the VLT Interferometer on Cerro Paranal in Chile is expected to be fully operational in only a few years...
The far future of exoplanet direct characterization (2009)
Schneider, Jean, Leger, Alain, Fridlund, Malcolm, White, Glenn, Eiroa, Carlos, Henning, Thomas, ...
In this outlook we describe what could be the next steps of the direct characterization of habitable exoplanets after first the medium and large mission projects and investigate the benefits of the...
Dust amorphization in protoplanetary disks (2009)
Glauser, Adrian M., Guedel, Manuel, Watson, Dan M., Henning, Thomas, Schegerer, Alexander A., Wolf, Sebastian, ...
High-energy irradiation of the circumstellar material might impact the structure and the composition of a protoplanetary disk and hence the process of planet formation. In this paper, we present a...
Gouliermis, Dimitrios A., Bestenlehner, Joachim M., Brandner, Wolfgang, Henning, Thomas, Rubio, Monica, Barba, Rodolfo H.
We perform a photometric analysis on deep, seeing-limited near-IR VLT images of the region NGC 346/N66 and a nearby control field of the SMC in order to locate the centres of active high- and...
Beuther, Henrik, Henning, Thomas
To characterize the initial conditions for intermediate- to high-mass star formation, we observed two Infrared Dark Clouds (IRDCs) that remain absorption features up to 70mum wavelength, with the...
Parsec-scale dust distributions in Seyfert galaxies - Results of the MIDI AGN snapshot survey (2009)
Tristram, Konrad R. W., Raban, David, Meisenheimer, Klaus, Jaffe, Walter, Röttgering, Huub, Burtscher, Leonard, ...
The emission of warm dust dominates the mid-infrared spectra of active galactic nuclei (AGN). Only interferometric observations provide the necessary angular resolution to resolve the nuclear dust...
Carpenter, John M., Bouwman, Jeroen, Mamajek, Eric E., Meyer, Michael R., Hillenbrand, Lynne A., Backman, Dana E., ...
We present Spitzer photometric (IRAC and MIPS) and spectroscopic (IRS low resolution) observations for 314 stars in the Formation and Evolution of Planetary Systems Legacy program. These data are...
Darwin -— an experimental astronomy mission to search for extrasolar planets (2009)
Cockell, Charles S., Herbst, Tom, Léger, Alain, Absil, O., Beichman, Charles, Benz, Willy, ...
As a response to ESA call for mission concepts for its Cosmic Vision 2015–2025 plan, we propose a mission called Darwin. Its primary goal is the study of terrestrial extrasolar planets and the...
Darwin---an experimental astronomy mission to search for extrasolar planets (2009)
Cockell, Charles S, Herbst, Tom, Léger, Alain, Absil, Olivier, Beichman, Charles, Benz, Willy, ...
As a response to ESA call for mission concepts for its Cosmic Vision 2015--2025 plan, we propose a mission called Darwin. Its primary goal is the study of terrestrial extrasolar planets and the...
Da Rio, Nicola, Gouliermis, Dimitrios, Henning, Thomas
In this photometric study of the stellar association LH 95 in the Large Magellanic Cloud (LMC) we focus on the pre-main Sequence (PMS) population in order to construct, for the first time, the...
Juhasz, Attila, Henning, Thomas, Bouwman, Jeroen, Dullemond, Cornelis, Pascucci, Ilaria, Apai, Daniel
The spectral region around 10 micrometer, showing prominent dust emission bands, is commonly used to derive the chemical composition of protoplanetary dust. Different analysis methods have been...
Hennemann, Martin, Birkmann, Stephan M., Krause, Oliver, Lemke, Dietrich, Pavlyuchenkov, Yaroslav, More, Surhud, ...
The fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar systems, and the...
IRAM-PdBI Observations of Binary Protostars I: The Hierarchical System SVS13 in NGC1333 (2008)
Chen, Xuepeng, Launhardt, Ralf, Henning, Thomas
We present millimeter interferometric observations of the young stellar object SVS13 in NCG1333 in the N2H+(1-0) line and at 1.4 and 3mm dust continuum, using the IRAM Plateau de Bure interferometer....
Carpenter, John M., Bouwman, Jeroen, Mamajek, Eric E., Meyer, Michael R., Hillenbrand, Lynne A., Backman, Dana E., ...
We present Spitzer photometric (IRAC and MIPS) and spectroscopic (IRS low resolution) observations for 314 stars in the Formation and Evolution of Planetary Systems (FEPS) Legacy program. These data...
Lunine, Jonathan I., Fischer, Debra, Hammel, H. B., Henning, Thomas, Hillenbrand, Lynne, Kasting, James, ...
[No abstract]
Forbrich, Jan, Stanke, Thomas, Klein, Randolf, Henning, Thomas, Menten, Karl M., Schreyer, Katharina, ...
(abridged) We study a previously discovered protostellar source that is deeply embedded and drives an energetic molecular outflow. The source, UYSO1, is located close to IRAS 07029-1215 at a distance...
The AstraLux large M dwarf survey (2008)
Hormuth, Felix, Brandner, Wolfgang, Janson, Markus, Hippler, Stefan, Henning, Thomas
AstraLux is the Lucky Imaging camera for the Calar Alto 2.2-m telescope and the 3.5-m NTT at La Silla. It allows nearly diffraction limited imaging in the SDSS i' and z' bands of objects as faint as...
Chemistry in Disks. II. -- Poor molecular content of the AB Aur disk (2008)
Schreyer, Katharina, Guilloteau, Stéphane, Semenov, Dmitry, Bacmann, Aurore, Chapillon, Edwige, Dutrey, Anne, ...
We study the molecular content and chemistry of a circumstellar disk surrounding the Herbig Ae star AB Aur at (sub-)millimeter wavelengths. Our aim is to reconstruct the chemical history and...
Chen, Xuepeng, Bourke, Tyler L., Launhardt, Ralf, Henning, Thomas
We present interferometric observations in the 12CO (2-1) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG30, using the Submillimeter Array. The...
Near-infrared wavefront sensing for the VLT interferometer (2008)
Hippler, Stefan, Brandner, Wolfgang, Clénet, Yann, Hormuth, Felix, Gendron, Eric, Henning, Thomas, ...
The very large telescope (VLT) interferometer (VLTI) in its current operating state is equipped with high-order adaptive optics (MACAO) working in the visible spectrum. A low-order near-infrared...
METIS - the Mid-infrared E-ELT Imager and Spectrograph (2008)
Brandl, Bernhard R., Lenzen, Rainer, Pantin, Eric, Glasse, Alistair, Blommaert, Joris, Venema, Lars, ...
METIS, the Mid-infrared ELT Imager and Spectrograph (formerly called MIDIR), is a proposed instrument for the European Extremely Large Telescope (E-ELT), currently undergoing a phase-A study. The...
Very Low-Mass Objects in the Coronet Cluster: The Realm of the Transition Disks (2008)
Sicilia-Aguilar, Aurora, Henning, Thomas, Juhász, Attila, Bouwman, Jeroen, Garmire, Gordon, Garmire, Audrey
We present optical and IR spectra of a set of low-mass stars and brown dwarfs in the Coronet cluster (aged ~1Myr), obtained with the multifiber spectrograph FLAMES/VLT and IRS/Spitzer. The optical...
AstraLux: the Calar Alto Lucky Imaging Camera (2008)
Hormuth, Felix, Hippler, Stefan, Brandner, Wolfgang, Wagner, Karl, Henning, Thomas
AstraLux is the Lucky Imaging camera for the Calar Alto 2.2-m telescope, based on an electron-multiplying high speed CCD. By selecting only the best 1-10% of several thousand short exposure frames,...
AstraLux - the Calar Alto 2.2-m telescope Lucky Imaging camera (2008)
Hormuth, Felix, Brandner, Wolfgang, Hippler, Stefan, Henning, Thomas
AstraLux is a Lucky Imaging camera for the Calar Alto 2.2-m telescope, based on an electron-multiplying high speed CCD. By selecting only the best 1-10% of several thousand short exposure frames,...
Janson, Markus, Reffert, Sabine, Brandner, Wolfgang, Henning, Thomas, Lenzen, Rainer, Hippler, Stefan
Due to its proximity, youth, and solar-like characteristics with a spectral type of K2V, Eps Eri is one of the most extensively studied systems in an extrasolar planet context. Based on radial...
The birth and death of organic molecules in protoplanetary disks (2008)
Henning, Thomas, Semenov, Dmitry
The most intriguing question related to the chemical evolution of protoplanetary disks is the genesis of pre-biotic organic molecules in the planet-forming zone. In this contribution we briefly...
ATCA and Spitzer Observations of the Binary Protostellar Systems CG30 and BHR71 (2008)
Chen, Xuepeng, Launhardt, Ralf, Bourke, Tyler L., Henning, Thomas, Barnes, Peter J.
We present interferometric observations with resolution of ~3 arcsecs of the isolated, low-mass protostellar double cores CG30 and BHR71 in the N2$H+(1-0) line and at 3mm dust continuum, using the...
Schmalzl, Markus, Gouliermis, Dimitrios A., Dolphin, Andrew E., Henning, Thomas
We present our photometric study of the stellar association NGC 602 in the wing of the Small Magellanic Cloud (SMC). The data were taken in the filters F555W and F814W using the Advanced Camera for...
Johansen, Anders, Brauer, Frithjof, Dullemond, Cornelis, Klahr, Hubert, Henning, Thomas
To treat the problem of growing protoplanetary disc solids across the meter barrier, we consider a very simplified two-component coagulation-fragmentation model that consists of macroscopic boulders...
The Photodetector Array Camera and Spectrometer (PACS) for the Herschel space observatory (2008)
Poglitsch, Albrecht, Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Feuchtgruber, Helmut, Henning, Thomas, ...
Near-infrared wavefront sensing for the VLT interferometer (2008)
Hippler, Stefan, Brandner, Wolfgang, Clénet, Yann, Hormuth, Felix, Gendron, Eric, Henning, Thomas, ...
METIS: the mid-infrared E-ELT imager and spectrograph (2008)
Brandl, Bernhard R., Lenzen, Rainer, Pantin, Eric, Glasse, Alistair, Blommaert, Joris, Venema, Lars, ...
Massive Star Formation: Observations Confront Theory (2008)
Beuther, Henrik, Linz, Hendrik, Henning, Thomas
Not Available
Chen, Xuepeng, Bourke, Tyler L., Launhardt, Ralf, Henning, Thomas
We present interferometric observations in the 12CO (2-1) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG 30, using the Submillimeter Array....
ATCA and Spitzer observations of the binary protostellar systems CG 30 and BHR 71 (2008)
Chen, Xuepeng, Launhardt, Ralf, Bourke, Tyler L., Henning, Thomas, Barnes, Peter J.
We present interferometric observations of the isolated, low-mass protostellar double cores CG 30 and BHR 71 in the N2H+ (1-0) line and at 3 mm dust continuum, using the Australian Telescope Compact...
Very low mass objects in the Coronet Cluster: the realm of the transition disks (2008)
Sicilia-Aguilar, Aurora, Henning, Thomas, Juhász, Attila, Bouwman, Jeroen, Garmire, Gordon, Garmire, Audrey
We present optical and IR spectra of a set of low-mass stars and brown dwarfs in the Coronet cluster (aged ~1 Myr), obtained with the multifiber spectrograph FLAMES on the VLT and with the IRS...
Laboratory analogs of carbonaceous matter: Soot and its precursors and by-products (2008)
Jäger, Cornelia, Mutschke, Harald, Llamas-Jansa, Isabel, Henning, Thomas, Huisken, Friedrich
Carbonaceous materials have been prepared in the laboratory by laser-induced pyrolysis of a mixture of hydrocarbons under different conditions and laser ablation of graphite in reactive gas...
Schmalzl, Markus, Gouliermis, Dimitrios A., Dolphin, Andrew E., Henning, Thomas
We present our photometric study of the stellar association NGC 602 in the wing of the Small Magellanic Cloud (SMC). The data were taken in the filters F555W and F814W using the Advanced Camera for...
NGC 346 in the Small Magellanic Cloud. IV. Triggered star formation in the H II region N66 (2008)
Gouliermis, Dimitrios A., Chu, You-Hua, Henning, Thomas, Brandner, Wolfgang, Gruendl, Robert A., Hennekemper, Eva, ...
Stellar feedback, expanding H II regions, wind-blown bubbles, and supernovae are thought to be important triggering mechanisms of star formation. Stellar associations, being hosts of significant...
High-resolution spectroscopic characterization of young stars (2008)
Weise, Patrick, Setiawan, Johny, Henning, Thomas, MüLler, André
We present the first results of our spectroscopic measurements of nearby young stars with ages between few Myrs until few hundreds Myrs. Our sample consists of 98 stars in nearby young associations...
The rapid outbursting star GM Cep: an EXor in Tr 37? (2008)
Sicilia-Aguilar, Aurora, Merín, Bruno, Hormuth, Felix, Ãbrahám, Peter, Henning, Thomas, Kun, Mária, ...
We present optical, IR, and millimeter observations of the solar-type star 13-277, also known as GM Cep, in the 4 Myr old cluster Tr 37. GM Cep experiences rapid magnitude variations of more than 2...
FU Orionis - the MIDI perspective (2008)
Quanz, Sascha P., Henning, Thomas, Leinert, Christoph, Ratzka, Thorsten, Wolf, Sebastian
We report on recent observations of the pre-main sequence star FU Orionis with VLTI/MIDI. FU Ori was observed at the end of 2004 with three different baselines and a maximum resolution of 24 mas,...
The Photodetector Array Camera and Spectrometer (PACS) for the Herschel Space Observatory (2008)
Poglitsch, Albrecht, Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Feuchtgruber, Helmut, Henning, Thomas, ...
The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments for ESA's far infrared and submillimeter observatory Herschel. It employs two Ge:Ga photoconductor...
SPHERE data reduction and handling system: overview, project status, and development (2008)
Pavlov, Alexey, Möller-Nilsson, Ole, Feldt, Markus, Henning, Thomas, Beuzit, Jean-Luc, Mouillet, David
The SPHERE project is a ESO second generation instrument which aims to detect giant extra-solar planets in the vicinity of bright stars and to characterise the objects found through spectroscopic and...
Lunine, Jonathan I., Fischer, Debra, Hammel, H. B., Henning, Thomas, Hillenbrand, Lynne, Kasting, James, ...
Not Available
Simulations of imperfect PRIMA fringe sensing units and calibration strategies (2008)
Geisler, Ronny, Elias, Nicholas M., Quirrenbach, Andreas, Köhler, Rainer, Tubbs, Robert N., Henning, Thomas, ...
The PRIMA (Phase-Referenced Imaging and Microarcsecond Astrometry) instrument at ESO/VLTI is scheduled for commissioning in late 2008. It is designed for phased-referenced imaging and narrow-angle...
AstraLux: the Calar Alto lucky imaging camera (2008)
Hormuth, Felix, Hippler, Stefan, Brandner, Wolfgang, Wagner, Karl, Henning, Thomas
AstraLux is the Lucky Imaging camera for the Calar Alto 2.2-m telescope, based on an electron-multiplying high speed CCD. By selecting only the best 1-10% of several thousand short exposure frames,...
Near-infrared wavefront sensing for the VLT interferometer (2008)
Hippler, Stefan, Brandner, Wolfgang, Clénet, Yann, Hormuth, Felix, Gendron, Eric, Henning, Thomas, ...
The very large telescope (VLT) interferometer (VLTI) in its current operating state is equipped with high-order adaptive optics (MACAO) working in the visible spectrum. A low-order near-infrared...
The birth and death of organic molecules in protoplanetary disks (2008)
Henning, Thomas, Semenov, Dmitry
The most intriguing question related to the chemical evolution of protoplanetary disks is the genesis of pre-biotic organic molecules in the planet-forming zone. In this contribution we briefly...
Hennekemper, Eva, Gouliermis, Dimitrios A., Henning, Thomas, Brandner, Wolfgang, Dolphin, Andrew E.
In the third part of our photometric study of the star-forming region NGC 346/N66 and its surrounding field in the Small Magellanic Cloud (SMC), we focus on the large number of low-mass...
Goto, Miwa, Usuda, Tomonori, Nagata, Tetsuya, Geballe, T. R., McCall, Benjamin J., Indriolo, Nick, ...
Infrared absorption lines of H+3, including the metastable R(3,3)l line, have been observed toward eight bright infrared sources associated with hot and massive stars located in and between the...
The astrometric data-reduction software for exoplanet detection with PRIMA (2008)
Elias, Nicholas M., Köhler, Rainer, Stilz, Ingo, Reffert, Sabine, Geisler, Ronny, Quirrenbach, Andreas, ...
PRIMA/PACMAN is scheduled for commissioning on Paranal in late 2008 as part of the VLTI. In this paper, we discuss the important aspects of its astrometric data-reduction software. For example, the...
METIS: the mid-infrared E-ELT imager and spectrograph (2008)
Brandl, Bernhard R., Lenzen, Rainer, Pantin, Eric, Glasse, Alistair, Blommaert, Joris, Venema, Lars, ...
METIS, the Mid-infrared ELT Imager and Spectrograph (formerly called MIDIR), is a proposed instrument for the European Extremely Large Telescope (E-ELT), currently undergoing a phase-A study. The...
Verification and acceptance tests of the PRIMA DDL optics (2008)
Bizenberger, Peter, Baumeister, Harald, Graser, Uwe, Henning, Thomas, Krause, Nathalie, Launhardt, Ralf, ...
The last step in designing and building instruments are the verification and acceptance tests of the assembled units and of the final instrument. For instruments, which are engineered to work at the...
SPHERE: a planet finder instrument for the VLT (2008)
Beuzit, Jean-Luc, Feldt, Markus, Dohlen, Kjetil, Mouillet, David, Puget, Pascal, Wildi, Francois, ...
Direct detection and spectral characterization of extra-solar planets is one of the most exciting but also one of the most challenging areas in modern astronomy. The challenge consists in the very...
Fernrohre heute und morgen das Large Binocular Telescope (2008)
Studium Generale Wintersemester 2008/2009: Galileis erster Blick durchs Fernrohr und die Folgen heute, 08. Dezember 2008 Prof. Thomas Henning, Max-Planck-Institut für Astronomie, Heidelberg Auf dem...
The moth : an unusual circumstellar structure associated with HD 61005 (2007)
Hines, Dean C., Schneider, Glenn, Hollenbach, David, Mamajek, Eric E., Hillenbrand, Lynne A., Metchev, Stanimir A., ...
We present the discovery of an unusual spatially resolved circumstellar structure associated with the ≈90 Myr, nearby, G dwarf star HD 61005. Observations from the FEPS Spitzer Legacy Science...
J. E. Beckman, T. J. Mahoney, Sebastian Wolf, Thomas Henning, Wilhelm Kley
Modelling of infrared/millimetre images of circumstellar disks with an embedded planet
H. Hubertus Klahr, Thomas Henning, Max Planck Society, Hubertus Klahr
In this paper, we present a new mechanism for number density enhancement and size segregation of particles in a non-laminar accretion disk, e.g. the solar nebula. It can be shown that, if there is a...
Janson, Markus, Brandner, Wolfgang, Henning, Thomas
Spectral differential imaging is an increasingly used technique for ground-based direct imaging searches for brown dwarf and planetary mass companions to stars. The technique takes advantage of...
Primordial Mass Segregation in Starburst Stellar Clusters (2007)
Dib, Sami, Shadmehri, Mohsen, Gopinathan, Maheswar, Kim, Jongsoo, Henning, Thomas
We present a model to explain the mass segregation and shallow mass functions observed in the central parts of dense and young starburst stellar clusters. The model assumes that the initial...
The Rapid Outbursting Star GM Cep: An EX-or in Tr 37? (2007)
Sicilia-Aguilar, Aurora, Merin, Bruno, Hormuth, Felix, Abraham, Peter, Henning, Thomas, Kun, Maria, ...
We present optical, IR and millimeter observations of the solar-type star 13-277, also known as GM Cep, in the 4 Myr-old cluster Tr 37. GM Cep experiences rapid magnitude variations of more than 2...
NGC 346 in The Small Magellanic Cloud. IV. Triggered Star Formation in the HII Region N66 (2007)
Gouliermis, Dimitrios A., Chu, You-Hua, Henning, Thomas, Brandner, Wolfgang, Gruendl, Robert A., Hennekemper, Eva, ...
Stellar feedback, expanding HII regions, wind-blown bubbles, and supernovae are thought to be important triggering mechanisms of star formation. Stellar associations, being hosts of significant...
Hennekemper, Eva, Gouliermis, Dimitrios A., Henning, Thomas, Brandner, Wolfgang, Dolphin, Andrew E.
In the third part of our photometric study of the star-forming region NGC 346/N~66 and its surrounding field in the Small Magellanic Cloud (SMC), we focus on the large number of low-mass pre-main...
Rapid planetesimal formation in turbulent circumstellar discs (2007)
Johansen, Anders, Oishi, Jeffrey S., Mac Low, Mordecai-Mark, Klahr, Hubert, Henning, Thomas, Youdin, Andrew
The initial stages of planet formation in circumstellar gas discs proceed via dust grains that collide and build up larger and larger bodies (Safronov 1969). How this process continues from...
Johansen, Anders, Oishi, Jeffrey S., Mac Low, Mordecai-Mark, Klahr, Hubert, Henning, Thomas, Youdin, Andrew
This document contains refereed supplementary information for the paper ``Rapid planetesimal formation in turbulent circumstellar discs''. It contains 15 sections (\S1.1 -- \S1.15) that address a...
OVRO N2H+ Observations of Class 0 Protostars: Constraints on the Formation of Binary Stars (2007)
Chen, Xuepeng, Launhardt, Ralf, Henning, Thomas
We present the results of an interferometric study of the N2H+(1--0) emission from nine nearby, isolated, low-mass protostellar cores, using the OVRO millimeter array. The main goal of this study is...
Disks around young stars with VLTI/MIDI (2007)
Van Boekel, Roy, Abraham, Peter, Correia, Serge, De Koter, Alex, Dominik, Carsten, Dutrey, Anne, ...
We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 micrometer...
Dutrey, Anne, Henning, Thomas, Guilloteau, S., Semenov, Dmitry, Piétu, Vincent, Schreyer, Katharina, ...
Aims: To constrain the ionization fraction in protoplanetary disks, we present new high-sensitivity interferometric observations of N$_2$H$^+$ in three disks surrounding DM Tau, LkCa 15, and MWC 480....
Gouliermis, Dimitrios A., Henning, Thomas, Brandner, Wolfgang, Dolphin, Andrew E., Rosa, Michael, Brandl, Bernhard
We report the discovery of an extraordinary number of pre-main sequence (PMS) stars in the vicinity of the stellar association LH 95 in the Large Magellanic Cloud (LMC). Using the {\em Advanced...
The dust, planetesimals and planets of HD 38529 (2007)
Moro-Martin, Amaya, Malhotra, Renu, Carpenter, John M., Hillenbrand, Lynne A., Wolf, Sebastian, Meyer, Michael R., ...
HD 38529 is a post-main sequence G8III/IV star (3.5 Gyr old) with a planetary system consisting of at least two planets having Msin(i) of 0.8 MJup and 12.2 MJup, semimajor axes of 0.13 AU and 3.74...
Gouliermis, Dimitrios A., Quanz, Sascha P., Henning, Thomas
We present Spitzer/IRAC photometry on the star-forming HII region N 90, related to the young stellar association NGC 602 in the Small Magellanic Cloud. Our photometry revealed bright mid-infrared...
Biller, Beth A., Close, Laird M., Masciadri, Elena, Nielsen, Eric, Lenzen, Rainer, Brandner, Wolfgang, ...
We present the results of a survey of 45 young (
Rochau, Boyke, Gouliermis, Dimitrios A., Brandner, Wolfgang, Dolphin, Andrew E., Henning, Thomas
We present the results of our investigation of the intermediate-age star cluster BS 90, located in the vicinity of the HII region N 66 in the SMC, observed with HST/ACS. The high-resolution data...
NACO-SDI direct imaging search for the exoplanet Eps Eri b (2007)
Janson, Markus, Brandner, Wolfgang, Henning, Thomas, Lenzen, Rainer, McArthur, Barbara, Benedict, G. Fritz, ...
The active K2V star $\epsilon$ Eri hosts the most nearby known extrasolar planet. With an angular separation of about 1" on average, and an age of a few to several hundred Myrs, $\epsilon$ Eri b is...
Silicate Dust in Evolved Protoplanetary Disks: Growth, Sedimentation, and Accretion (2007)
Sicilia-Aguilar, Aurora, Hartmann, L. W., Watson, Dan, Bohac, Chris, Henning, Thomas, Bouwman, Jeroen
We present the Spitzer IRS spectra for 33 young stars in Tr 37 and NGC 7160. The sample includes the high- and intermediate-mass stars with MIPS 24 microns excess, the only known active accretor in...
Meyer, Michael R., Hillenbrand, Lynne A., Backman, Dana, Beckwith, Steve, Bouwman, Jeroen, Brooke, Tim, ...
We provide an overview of the Spitzer Legacy Program ``Formation and Evolution of Planetary Systems" (FEPS) which was proposed in 2000, begun in 2001, and executed aboard the Spitzer Space Telescope...
Silicate dust in evolved protoplanetary disks: growth, sedimentation, and accretion (2007)
Sicilia-Aguilar, Aurora, Hartmann, Lee W., Watson, Dan, Bohac, Chris, Henning, Thomas, Bouwman, Jeroen
We present the Spitzer IRS spectra for 33 young stars in Tr 37 and NGC 7160. The sample includes the high- and intermediate-mass stars with MIPS 24 mum excess, the only known active accretor in the...
Rochau, Boyke, Gouliermis, Dimitrios A., Brandner, Wolfgang, Dolphin, Andrew E., Henning, Thomas
We present the results of our investigation of the intermediate-age star cluster BS 90, located in the vicinity of the H II region N66 in the SMC, observed with HST ACS. The high-resolution data...
The dust, planetesimals, and planets of HD 38529 (2007)
Moro-Martín, Amaya, Malhotra, Renu, Carpenter, John M., Hillenbrand, Lynne A., Wolf, Sebastian, Meyer, Michael R., ...
HD 38529 is a post-main-sequence G8 III/IV star (3.5 Gyr old) with a planetary system consisting of at least two planets having Msini of 0.8 and 12.2 MJup, semimajor axes of 0.13 and 3.74 AU, and...
Are debris disks and massive planets correlated? (2007)
Moro-Martín, Amaya, Carpenter, John M., Meyer, Michael R., Hillenbrand, Lynne A., Malhotra, Renu, Hollenbach, David, ...
Using data from the Spitzer Space Telescope Legacy Science Program Formation and Evolution of Planetary Systems (FEPS), we have searched for debris disks around nine FGK stars (2-10 Gyr), known from...
Rapid planetesimal formation in turbulent circumstellar disks (2007)
Johansen, Anders, Oishi, Jeffrey S., Low, Mordecai-Mark Mac, Klahr, Hubert, Henning, Thomas, Youdin, Andrew
During the initial stages of planet formation in circumstellar gas disks, dust grains collide and build up larger and larger bodies. How this process continues from metre-sized boulders to...
NACO-SDI direct imaging search for the exoplanet e Eri b (2007)
Janson, Markus, Brandner, Wolfgang, Henning, Thomas, Lenzen, Rainer, McArthur, Barbara, Benedict, G. Fritz, ...
The active K2 V star É Eri hosts the nearest known extrasolar planet. With an angular separation of about 1" on average, and an age of a few to several hundred megayears, É Eri b is one of the...
The moth: an unusual circumstellar structure associated with HD 61005 (2007)
Hines, Dean C., Schneider, Glenn, Hollenbach, David, Mamajek, Eric E., Hillenbrand, Lynne A., Metchev, Stanimir A., ...
We present the discovery of an unusual spatially resolved circumstellar structure associated with the ~90 Myr, nearby, G dwarf star HD 61005. Observations from the FEPS Spitzer Legacy Science survey...
Gouliermis, Dimitrios A., Quanz, Sascha P., Henning, Thomas
We present Spitzer/IRAC photometry on the star-forming HII region N 90, related to the young stellar association NGC 602 in the Small Magellanic Cloud. Our photometry revealed bright mid-infrared...
Gouliermis, Dimitrios A., Henning, Thomas, Brandner, Wolfgang, Dolphin, Andrew E., Rosa, Michael, Brandl, Bernhard
We report the discovery of an extraordinary number of pre-main-sequence (PMS) stars in the vicinity of the stellar association LH 95 in the Large Magellanic Cloud (LMC). Using the Advanced Camera for...
Dutrey, A., Henning, Thomas, Guilloteau, S., Semenov, D., Piétu, V., Schreyer, K., ...
Aims.To constrain the ionization fraction in protoplanetary disks, we present new high-sensitivity interferometric observations of N2H+ in three disks surrounding DM Tau, LkCa 15, and MWC 480....
OVRO N2H+ observations of class 0 protostars: constraints on the formation of binary stars (2007)
Chen, Xuepeng, Launhardt, Ralf, Henning, Thomas
We present the results of an interferometric study of the N2H+ (1-0) emission from nine nearby, isolated, low-mass protostellar cores, using the Owens Valley Radio Observatory (OVRO) millimeter...
Optical spectroscopy of close companions to nearby Herbig Ae/Be and T Tauri stars (2007)
Carmona, A., Van Den Ancker, M. E., Henning, Thomas
We present VLT-FORS2 optical (5700-9400 Å) spectroscopy of close (r < 1.5´´) companions to three nearby (d < 200 pc) Herbig Ae/Be stars (HD 144432, HD 150193, KK Oph) and one T Tauri star (S CrA)....
Biller, Beth A., Close, Laird M., Masciadri, Elena, Nielsen, Eric, Lenzen, Rainer, Brandner, Wolfgang, ...
We present the results of a survey of 45 young (
Apai, Dániel, Bik, Arjan, Kaper, Lex, Henning, Thomas, Zinnecker, Hans
We present the first multiepoch radial velocity study of embedded young massive stars using near-infrared spectra obtained with ISAAC mounted at the ESO Very Large Telescope, with the aim of...
Dean C. Hines, Glenn Schneider, David Hollenbach, Eric E. Mamajek, Lynne A. Hillenbr, Stanimir A. Metchev, ...
We present the discovery of an unusual spatially resolved circumstellar structure associated with the ≈90 Myr, nearby, G dwarf star HD 61005. Observations from the FEPS Spitzer Legacy Science...
Dutrey, Anne, Henning, Thomas, Guilloteau, Stephane, Semenov, Dmitry, Pietu, Vincent, Schreyer, Katharina, ...
Aims: To constrain the ionization fraction in protoplanetary disks, we present new high-sensitivity interferometric observations of N$_2$H$^+$ in three disks surrounding DM Tau, LkCa 15, and MWC 480....
Are Debris Disks and Massive Planets Correlated? (2006)
Moro-Martín, Amaya, Carpenter, John M., Meyer, Michael R., Hillenbrand, Lynne A., Malhotra, Renu, Hollenbach, David, ...
Using data from the Spitzer Space Telescope Legacy Science Program ``Formation and Evolution of Planetary Systems'' (FEPS), we have searched for debris disks around 9 FGK stars (2-10 Gyr), known from...
Radial Velocity Follow-up of Planetary Transit Candidate MACHO.120.22303.5389 (2006)
Weldrake, David T. F, Setiawan, Johny, Weise, Patrick, Henning, Thomas
We present preliminary results on the radial velocity follow-up of a planetary transit candidate (P=2.43d, V=15.4) detected during the MACHO project. The photometry is consistent with a grazing...
Direct imaging of the young spectroscopic binary HD 160934 (2006)
Hormuth, Felix, Brandner, Wolfgang, Hippler, Stefan, Janson, Markus, Henning, Thomas
We report on the direct detection of a close companion to HD 160934, a young active star, SB1 spectroscopic binary, and suggested member of the AB Doradus moving group. High angular resolution at the...
Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B (2006)
Janson, Markus, Brandner, Wolfgang, Lenzen, Rainer, Close, Laird, Nielsen, Eric, Hartung, Markus, ...
We present resolved NACO photometry of the close binary AB Dor B in H- and Ks-band. AB Dor B is itself known to be a wide binary companion to AB Dor A, which in turn has a very low-mass close...
Dust rings and filaments around the isolated young star V1331 Cygni (2006)
Quanz, Sascha P., Apai, Daniel, Henning, Thomas
We characterize the small and large scale environment of the young star V1331 Cygni with high resolution HST/WFPC2 and Digitized Sky Survey images. In addition to a previously known outer dust ring...
Apai, Daniel, Bik, Arjan, Kaper, Lex, Henning, Thomas, Zinnecker, Hans
We present the first multi-epoch radial velocity study of embedded young massive stars using near-infrared spectra obtained with ISAAC mounted at the ESO Very Large Telescope, with the aim to detect...
Atmosphere-like turbulence generation with surface-etched phase-screens (2006)
Hippler, Stefan, Hormuth, Felix, Butler, David J., Brandner, Wolfgang, Henning, Thomas
We built and characterized an optical system that emulates the optical characteristics of an 8m-class telescope like the Very Large Telescope. The system contains rotating glass phase-screens to...
High-Resolution Spectroscopy in Tr37: Gas Accretion Evolution in Evolved Dusty Disks (2006)
Sicilia-Aguilar, Aurora, Hartmann, Lee, Furezs, Gabor, Henning, Thomas, Dullemond, Cornelis, Brandner, Wolfgang
Using the Hectochelle multifiber spectrograph, we have obtained high-resolution (R~34,000) spectra in the Halpha region for a large number of stars in the 4 Myr-old cluster Tr 37, containing 146...
Disks around young stars with VLTI/MIDI (2006)
Van Boekel, Roy, Abraham, Peter, Correia, Serge, De Koter, Alex, Dominik, Carsten, Dutrey, Anne, ...
We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 micrometer...
Discovery of an 86 AU Radius Debris Ring Around HD 181327 (2006)
Schneider, Glenn, Silverstone, Murray D., Hines, Dean C., Augereau, Jean-Charles, Pinte, Christophe, Menard, Francois, ...
HST/NICMOS PSF-subtracted coronagraphic observations of HD 181327 have revealed the presence of a ring-like disk of circumstellar debris seen in 1.1 micron light scattered by the disk grains,...
FU Orionis - The MIDI/VLTI Perspective (2006)
Quanz, Sascha P., Henning, Thomas, Bouwman, Jeroen, Ratzka, Thorsten, Leinert, Christoph
We present the first mid-infrared interferometric measurements of FU Orionis. We clearly resolve structures that are best explained with an optically thick accretion disk. A simple accretion disk...
Early ComeOn+ Adaptive Optics Observation of GQ Lup and its Substellar Companion (2006)
Janson, Markus, Brandner, Wolfgang, Henning, Thomas, Zinnecker, Hans
An analysis of adaptive optics K-band imaging data of GQ Lup acquired in 1994 by the first generation adaptive optics system ComeOn+ at the ESO 3.6m optical telescope in La Silla is presented. The...
Biller, Beth A., Close, Laird M., Masciadri, Elena, Lenzen, Rainer, Brandner, Wolfgang, McCarthy, Donald, ...
We discuss the preliminary results of a survey of young ( 10 mag, Delta H > 11.5 mag for a T6 spectral type) at a separation of 0.5" from the primary star. With this degree of attenuation, we should...
The Photodetector Array Camera and Spectrometer (PACS) for the Herschel Space Observatory (2006)
Poglitsch, Albrecht, Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Feuchtgruber, Helmut, Henning, Thomas, ...
A search for optical outflows from brown dwarfs in the Chamaeleon I molecular cloud (2006)
Wang, Hongchi, Henning, Thomas
A deep and wide-field HH object survey has been carried out toward the Chamaeleon I (Cha I) molecular cloud with a sky coverage of 1deg×2deg, which embraces the entire Cha I molecular cloud. In...
Disks around young stars with VLTI/MIDI (2006)
Van Boekel, Roy, Ábrahám, Péter, Correia, Serge, De Koter, Alex, Dominik, Carsten, Dutrey, Anne, ...
We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 mum atmospheric...
High-resolution spectroscopy in Tr 37: Gas accretion evolution in evolved dusty disks (2006)
Sicilia-Aguilar, Aurora, Hartmann, Lee W., Fürész, Gábor, Henning, Thomas, Dullemond, Cornelis, Brandner, Wolfgang
Using the Hectochelle multifiber spectrograph, we have obtained high-resolution (R~34,000) spectra in the Halpha region for a large number of stars in the 4 Myr old cluster Tr 37, containing 146...
Discovery of an 86 AU radius debris ring around HD 181327 (2006)
Schneider, Glenn, Silverstone, Murray D., Hines, Dean C., Augereau, Jean-Charles, Pinte, Christophe, Ménard, François, ...
HST NICMOS PSF-subtracted coronagraphic observations of HD 181327 have revealed the presence of a ringlike disk of circumstellar debris seen in 1.1 mum light scattered by the disk grains, surrounded...
The PRIMA astrometric planet search: goals and prospects (2006)
Reffert, Sabine, Ségransan, Damien, Launhardt, Ralf, Henning, Thomas, Queloz, Didier, Quirrenbach, Andreas, ...
ESO's PRIMA (Phase-Referenced Imaging and Micro-arcsecond Astrometry) facility at the VLT Interferometer on Cerro Paranal in Chile is expected to be fully operational in only a couple of years from...
The photodetector array camera and spectrometer (PACS) for the Herschel Space Observatory (2006)
Poglitsch, Albrecht, Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Feuchtgruber, Helmut, Henning, Thomas, ...
The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments for ESA's far infrared and submillimeter observatory Herschel. It employs two Ge:Ga photoconductor...
Ground-based direct imaging of extra-solar planets supported by AO (2006)
Masciadri, Elena, Geissler, Kerstin, Kellner, Stephan, Brandner, Wolfgang, Henning, Thomas, Mundt, Reinhard, ...
Johansen, Anders, Henning, Thomas, Klahr, Hubert
We perform numerical simulations of the Kelvin-Helmholtz instability in the midplane of a protoplanetary disk. A two-dimensional corotating slice in the azimuthal-vertical plane of the disk is...
Atmosphere-like turbulence generation with surface-etched phase-screens (2006)
Hippler, Stefan, Hormuth, Felix, Butler, David J., Brandner, Wolfgang, Henning, Thomas
We built and characterized an optical system that emulates the optical characteristics of an 8m-class telescope like the Very Large Telescope. The system contains rotating glass phase-screens to...
The MPIA multipurpose laboratory atmospheric turbulence simulator MAPS (2006)
Hippler, Stefan, Hormuth, Felix, Brandner, Wolfgang, Butler, David J., Henning, Thomas, Egner, Sebastian
We built an optical system that emulates the optical characteristics of an 8m-class telescope like the VLT and that contains rotating glass plates phase screens to generate realistic atmosphere-like...
Hines, Dean C., Backman, Dana E., Bouwman, Jeroen, Hillenbrand, Lynne A., Carpenter, John M., Meyer, Michael R., ...
We report the discovery of a debris system associated with the ~30 Myr old G3/5V star HD 12039 using Spitzer Space Telescope observations from 3.6-160 mum. An observed infrared excess...
Dust coagulation in protoplanetary disks (2006)
Henning, Thomas, Dullemond, Cornelis P., Wolf, Sebastian, Dominik, Carsten
The search for the sub-solar initial mass function in the Local Group (2006)
Gouliermis, Dimitrios, Berton, Alessandro, Brandner, Wolfgang, Henning, Thomas, Feldt, Markus
The stellar Initial Mass Function (IMF) is a quantity which accounts for the distribution of the masses of stars, when they are formed. All the information available on the IMF in the low-mass regime...
AO assisted NIR 3D spectroscopic imaging - Can an ELT see the earth at 10pc? (2006)
Feldt, Markus, Berton, Alessandro, Henning, Thomas, Gratton, Raffaele, Turatto, Massimo, Schmid, H. M., ...
Biller, Beth A., Close, Laird M., Masciadri, Elena, Lenzen, Rainer, Brandner, Wolfgang, McCarthy, Donald, ...
We discuss contrast limits obtained during a survey of young (10 mag, DeltaH>10.6 mag for a T6 spectral type) at a separation of 0.5" from the primary star. With this degree of attenuation, we can...
A Survey of close, young stars with SDI at the VLT and MMT (2006)
Biller, Beth A., Close, Laird M., Masciadri, Elena, Lenzen, Rainer, Brandner, Wolfgang, McCarthy, Donald, ...
Berton, Alessandro, Gratton, Raffaele, Antichi, Jacopo, Dohlen, Kjetil, Claudi, Riccardo, Feldt, Markus, ...
Observations of extrasolar planets using Integral Field Spectroscopy (IFS), if coupled with an extreme Adaptive Optics system and analyzed with a Simultaneous Differential Imaging technique (SDI),...
A simulation code for AO assisted 3D spectroscopic imaging of extrasolar planets (2006)
Berton, Alessandro, Feldt, Markus, Gratton, Raffaele G., Henning, Thomas, Desidera, Silvano, Hippler, Stefan, ...
The search for extrasolar giant planets using integral field spectroscopy: Simulations (2006)
Berton, Alessandro, Feldt, Markus, Gratton, Raffaele, Hippler, Stefan, Henning, Thomas
We present here simulations of extrasolar planets detections obtained using a combination of extreme adaptive optics and integral field spectroscopy. The simulation code, written for IDL, provides...
Braune Zwerge. Entstehung, Scheiben, Doppelsysteme und Atmosphären (2006)
Bailer-Jones, Coryn, Brandner, Wolfgang, Henning, Thomas
Not Available
Johansen, Anders, Henning, Thomas, Klahr, Hubert
We perform numerical simulations of the Kelvin-Helmholtz instability in the mid-plane of a protoplanetary disk. A two-dimensional corotating slice in the azimuthal--vertical plane of the disk is...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
As a short introduction to the astronomy session, the response of the community to the Call for Themes issued by ESA and the specific themes selected by the Astronomy Working Group are briefly...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
As a short introduction to the astronomy session, the response of the community to the Call for Themes issued by ESA and the specific themes selected by the Astronomy Working Group are briefly...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
As a short introduction to the astronomy session, the response of the community to the Call for Themes issued by ESA and the specific themes selected by the Astronomy Working Group are briefly...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
To be published in the proceedings of the 2005 ESLAB Symposium "Trends in Space Science and Cosmic Vision 2020", held at ESTEC, 19-21 April 2005, F. Favata (ed).
Formation and Evolution of Planetary Systems: Cold Outer Disks Associated with Sun-like stars (2005)
Kim, Jinyoung Serena, Hines, Dean C., Backman, Dana E., Hillenbrand, Lynne A., Meyer, Michael R., Rodmann, Jens, ...
We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``the Formation and...
Gravoturbulent formation of planetesimals (2005)
Johansen, Anders, Klahr, Hubert, Henning, Thomas
We explore the effect of magnetorotational turbulence on the dynamics and concentrations of boulders in local box simulations of a sub-Keplerian protoplanetary disc. The solids are treated as...
Schartmann, Marc, Meisenheimer, Klaus, Camenzind, Max, Wolf, Sebastian, Henning, Thomas
We explore physically self-consistent models of dusty molecular tori in Active Galactic Nuclei (AGN) with the goal of interpreting VLTI observations and fitting high resolution mid-IR spectral energy...
The Decay of Accreting Triple Systems as Brown Dwarf Formation Scenario (2005)
Umbreit, Stefan, Burkert, Andreas, Henning, Thomas, Mikkola, Seppo, Spurzem, Rainer
We investigate the dynamical decay of non-hierarchical accreting triple systems and its implications on the ejection model as Brown Dwarf formation scenario. A modified chain-regularization scheme is...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
As a short introduction to the astronomy session, the response of the community to the Call for Themes issued by ESA and the specific themes selected by the Astronomy Working Group are briefly...
Evolution of cold circumstellar dust around solar-type stars (2005)
Carpenter, John M., Wolf, Sebastian, Schreyer, Katharina, Launhardt, Ralf, Henning, Thomas
We present submillimeter (Caltech Submillimeter Observatory 350 mum) and millimeter (Swedish-ESO Submillimetre Telescope [SEST] 1.2 mm, Owens Valley Radio Observatory [OVRO] 3 mm) photometry for 127...
The decay of accreting triple systems as brown dwarf formation scenario (2005)
Umbreit, Stefan, Burkert, Andreas, Henning, Thomas, Mikkola, Seppo, Spurzem, Rainer
We investigate the dynamical decay of nonhierarchical accreting triple systems and its implications on the ejection model as a brown dwarf formation scenario. A modified chain-regularization scheme...
New Herbig-Haro objects in the L1617 and L1646 dark clouds (2005)
Wang, Honchi, Stecklum, B., Henning, Thomas
Optical imaging towards L1617 and L1646 revealed three new Herbig-Haro (HH) objects, HH 182, 439, and 866. Spectroscopic observations of HH 182 A and 439 A confirmed their HH object nature. Molecular...
Microsurgical anastomosis of sperm duct by laser tissue soldering (2005)
Wehner, Martin M., Teutu-Kengne, Alain-Fleury, Brkovic, Drasko, Henning, Thomas, Klee, Doris, Poprawe, Reinhart, ...
Connection of small vessels is usually done by suturing which is very cumbersome. Laser tissue soldering can circumvent that obstacle if a handy procedure can be defined. Our principle approach...
The onset of planet formation in brown dwarf disks (2005)
Apai, Dániel, Pascucci, Ilaria, Bouwman, Jeroen, Natta, Antonella, Henning, Thomas, Dullemond, Cornelis P.
The onset of planet formation in protoplanetary disks is marked by the growth and crystallization of sub-micrometer-sized dust grains accompanied by dust settling toward the disk mid-plane. Here, we...
Formation and evolution of planetary systems: Cold outer disks associated with sun-like stars (2005)
Kim, Jinyoung Serena, Hines, Dean C., Backman, Dana E., Hillenbrand, Lynne A., Meyer, Michael R., Rodmann, Jens, ...
We present the discovery of debris systems around three Sun-like stars based on observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``The Formation and...
The Photodetector Array Camera & Spectrometer (PACS) for the Herschel Space Observatory (2005)
Poglitsch, Albrecht, Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Henning, Thomas, Van Hoof, Chris, ...
The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments for ESA's far infrared and submillimetre observatory, Herschel. It employs two Ge:Ga photoconductor...
Towards a physical model of dust tori in Active Galactic Nuclei (2005)
Schartmann, Marc, Meisenheimer, Klaus, Camenzind, Max, Wolf, Sebastian, Henning, Thomas
We explore physically self-consistent models of dusty molecular tori in Active Galactic Nuclei (AGN) with the goal of interpreting VLTI observations and fitting high resolution mid- infrared spectral...
Trends in Space Astronomy and Cosmic Vision 2015-2025 (2005)
Turon, Catherine, Done, Chris, Quirrenbach, Andreas, Schneider, Peter, Aerts, Conny, Bazzano, Angela, ...
As a short introduction to the astronomy session, the response of the community to the Call for Themes issued by ESA and the specific themes selected by the Astronomy Working Group are briefly...
Glenn Schneider, Murray D. Silverstone, Dean C. Hines, Jean-charles Augereau, Christophe Pinte, François Ménard, ...
HST NICMOS PSF-subtracted coronagraphic observations of HD 181327 have revealed the presence of a ringlike disk of circumstellar debris seen in 1.1 m light scattered by the disk grains, surrounded by...
Direct Detection of Sub-stellar Companions with MIDI (2004)
Schuller, Peter, Vannier, Martin, Petrov, Romain, Lopez, Bruno, Leinert, Christoph, Henning, Thomas, ...
Current detection methods of planetary companions do not allow retrieving their spectral information properties. The method of Differential Interferometry has the potential to complement such...
Near-IR observations of UCHII regions (2004)
Alvarez, Carlos, Feldt, Markus, Henning, Thomas, Puga, Elena, Brandner, Wolfgang, Stecklum, Bringfried
We present adaptive-optics (AO) assisted J, H and K/K' images of 8 UCHII regions taken with the ALFA and ADONIS AO systems at Calar Alto and La Silla observatories. The images show details of the...
The G9.62+0.19-F Hot Molecular Core - The infrared view on very young massive stars (2004)
Linz, Hendrik, Stecklum, Bringfried, Henning, Thomas, Hofner, Peter, Brandl, Bernhard
(abridged) We present the results of an extensive infrared study of the massive star-forming region G9.62+0.19. The data cover information from broad- and narrow-band filters in the wavelength range...
The Photodetector Array Camera & Spectrometer (PACS) for the Herschel Space Observatory (2004)
Poglitsch, Albrecht., Waelkens, Christoffel, Bauer, Otto H., Cepa, Jordi, Henning, Thomas, Van Hoof, Chris, ...
FU Orionis: A binary star? (2004)
Wang, Hongchi, Apai, Daniel, Henning, Thomas, Pascucci, Ilaria
By using the Adaptive Optics with a Laser for Astronomy system at the 3.6 m telescope of the Calar Alto Observatory, we detected a faint red star in the apparent vicinity of FU Ori, the prototype of...
Cryomechanisms for the instruments MIRI and NIRSpec on the James Webb Space Telescope (JWST) (2004)
Hofferbert, Ralph, Lemke, Dietrich, Grözinger, Ulrich, Henning, Thomas, Mertin, Stefan, Rohloff, Ralf-Rainer, ...
Lemke, Dietrich, Hofferbert, Ralph, Grözinger, Ulrich, Rohloff, Ralf-Rainer, Böhm, Armin, Henning, Thomas, ...
Prototyping of cryomechanisms for the JWST Near-Infra-Red Spectrograph (NIRSpec) (2004)
Hofferbert, Ralph, Lemke, Dietrich, Böhm, Armin, Grözinger, Ulrich, Henning, Thomas, Huber, Armin, ...
Optical outflows in the R CrA molecular cloud (2004)
Wang, Hongchi, Mundt, Reinhard, Henning, Thomas, Apai, Daniel
A deep [S II] lambdalambda6717/6731 wide-field survey of Herbig-Haro (HH) objects has been carried out in two fields toward the R CrA molecular cloud using the ESO/MPG 2.2 m Wide Field Imager. Twelve...
Gisler, Daniel, Schmid, Hans Martin, Thalmann, Christian, Povel, Hans Peter, Stenflo, Jan O., Joos, Franco, ...
Status report of PYRAMIR: A near-infrared pyramid wavefront sensor for ALFA (2004)
Costa, Joana B., Feldt, Markus, Wagner, Karl, Bizenberger, Peter, Hippler, Stefan, Baumeister, Harald, ...
FU Orionis: A Binary Star? (2003)
Wang, Hongchi, Apai, Daniel, Henning, Thomas, Pascucci, Ilaria
By using the ALFA adaptive optics system at the 3.6m telescope of the Calar Alto Observatory we detected a faint red star in the apparent vicinity of FU Ori, the prototype of the FUor outburst stars....
On the Feasibility of Disk Chemical Modeling (2003)
Semenov, Dmitry, Pavluchenkov, Yaroslav, Henning, Thomas, Herbst, Eric, Van Dishoeck, Ewine
In this paper, we compare the results of the modeling of a protoplanetary disk chemical evolution obtained with the UMIST95 and ``New Standard Model'' (NSM) chemical databases. Assuming the same...
An Extremely Young Massive Stellar Object near IRAS 07029-1215 (2003)
Forbrich, Jan, Schreyer, Katharina, Posselt, Bettina, Klein, Randolf, Henning, Thomas
In the course of a comprehensive mm/submm survey of massive star-forming regions, the vicinities of a sample of 47 luminous IRAS sources were closely investigated with SCUBA and IRAM bolometers in...
NGC 2264 IRS1: The central engine and its cavity (2003)
Schreyer, Katharina, Stecklum, Bringfried, Linz, Hendrik, Henning, Thomas
We present a high-resolution study of NGC 2264 IRS1 in CS(2-1) and in the 3-mm continuum using the IRAM Plateau de Bure Interferometer. We complement these radio data with images taken at 2.2, 4.6,...
Thermo-Hydrodynamics of Circumstellar Disks with High-mass Planets (2003)
D'Angelo, Gennaro, Henning, Thomas, Kley, Willy
With a series of numerical simulations, we analyze the thermo-hydrodynamical evolution of circumstellar disks containing Jupiter-size protoplanets. In the framework of the two-dimensional...
The Grandeur of Massive Star Formation Revealed with ISAAC (2003)
Linz, Hendrik, Stecklum, Bringfried, Henning, Thomas, Hofner, Peter
We present selected results from our ongoing investigation of high-mass star-forming regions which are based on infrared observations with ESO's ISAAC camera at the 8.2-m ANTU VLT telescope. Although...
D'Angelo, Gennaro, Kley, Willy, Henning, Thomas
We investigate the evolution of protoplanets with different masses embedded in an accretion disk, via global fully three-dimensional hydrodynamical simulations. We consider a range of planetary...
Evolution of Magnetic fields in Bok globules? (2003)
Wolf, Sebastian, Launhardt, Ralf, Henning, Thomas
We study the influence and structure of the magnetic field in the early phases of low-mass star formation using polarization maps of Bok globules at a wavelength of 850micron, obtained with the...
Magnetic field evolution in Bok globules (2003)
Wolf, Sebastian, Launhardt, Ralf, Henning, Thomas
Using the Submillimeter Common-User Bolometer Array (SCUBA) at the James Clerk Maxwell Telescope (JCMT), we obtained submillimeter polarization maps of the Bok globules B335, CB230, and CB244 at...
D'Angelo, Gennaro, Kley, Willy, Henning, Thomas
We investigate the evolution of protoplanets with different masses embedded in an accretion disk, via global fully three-dimensional hydrodynamical simulations. We consider a range of planetary...
Discovery of a candidate for the central star of the ultracompact H II region G5.89-0.39 (2003)
Feldt, Markus, Puga, Elena, Lenzen, Rainer, Henning, Thomas, Brandner, Wolfgang, Stecklum, B., ...
We present high-resolution, near-infrared images of the ultracompact H II region G5.89-0.39 that were taken during a commissioning run of the NACO adaptive optics/near-infrared camera system at the...
Cosmic silicates - A review (2003)
The paper reviews our knowledge about cosmic silicates obtained from a combination of recent infrared observations and dedicated laboratory experiments. The formation and properties of crystalline...
Probing dust around brown dwarfs: The Naked LP 944-20 and the disk of Cha Ha 2 (2003)
Apai, Dániel, Pascucci, Ilaria, Henning, Thomas, Sterzik, Michael F., Klein, Randolf, Semenov, Dimitri, ...
Infrared Imaging Polarimetry of Massive Star-forming Regions (2002)
Stecklum, Bringfried, Henning, Thomas, Feldt, Markus, Kaeufl, Hans-Ulrich, Wolf, Sebastian
Imaging polarimetry is a useful tool to reveal the 3D structure of dust distributions and to localize embedded young stellar objects. We present maps of the linear polarization at 2.2 micron for...
Nested-grid calculations of disk-planet interaction (2001)
D'Angelo, Gennaro, Henning, Thomas, Kley, Wilhelm
We study the evolution of embedded protoplanets in a protostellar disk using very high resolution nested-grid computations. This method allows us to perform global simulations of planets orbiting in...
High-resolution studies of massive star-forming regions (2001)
Henning, Thomas, Feldt, Markus, Stecklum, Bringfried
We summarize the status of our program of near-infrared adaptive optics observations of ultracompact HII regions. By means of selected results we demonstrate the usefulness of this technique for...
Pre-main sequence binaries with aligned disks ? (2000)
Wolf, Sebastian, Stecklum, Bringfried, Henning, Thomas
We present the results of a study performed with the goal to investigate whether low-mass pre-main sequence binary stars are formed by multiple fragmentation or via stellar capture. If binaries form...
Dust Properties and Assembly of Large Particles in Protoplanetary Disks (1999)
Beckwith, Steven V. W., Henning, Thomas, Nakagawa, Yoshitsugu
Recent research on the buildup of rocks from small dust grains has reaffirmed that grain growth in protoplanetary disks should occur quickly. Calculation of growth rates have been made for a variety...
Strahlformung für die Oberflächenbehandlung mit Hochleistungslasern / (1996)
Zugl.: Aachen, Techn. Hochsch., Diss., 1996.
Directed by Allen B. Moore.
Thesis (Ed. D.)--University of Georgia, 1987.
Strahlungstransport in Staubhüllen um sehr junge und massereiche Sterne. (1984)
Jena, Univ., Diss. A, 1984 (Nicht f.d. Austausch).