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...
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...
Optical Astrometry of Accreting Black Holes and Neutron Stars: Scientific Opportunities (2009)
Tomsick, John A., Quirrenbach, Andreas, Kulkarni, Shrinivas R., Shaklan, Stuart B., Pan, Xiaopei
The extreme conditions found near black holes and neutron stars provide a unique opportunity for testing physical theories. Observations of both types of compact objects can be used to probe regions...
Lunine, Jonathan I., Fischer, Debra, Hammel, H. B., Henning, Thomas, Hillenbrand, Lynne, Kasting, James, ...
[No abstract]
The Discovery of Stellar Oscillations in the K Giant $\iota$ Dra (2008)
Zechmeister, Mathias, Reffert, Sabine, Hatzes, Artie P., Endl, Michael, Quirrenbach, Andreas
$\iota$ Dra (HIP 75458) is a well-known example for a K giant hosting a substellar companion since its discovery by Frink et al. (2002). We present radial velocity measurements of this star from...
Taking the Measure of the Universe : precision astrometry with SIM PlanetQuest (2008)
Unwin, Stephen C., Shao, Michael, Tanner, Angelle M., Allen, Ronald J., Beichman, Charles A., Boboltz, David, ...
Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument...
The close circumstellar environment of the semi-regular S-type star Pi^1 Gruis (2008)
Sacuto, Stéphane, Jorissen, Alain, Cruzalèbes, Pierre, Chesneau, Olivier, Ohnaka, Keiichi, Quirrenbach, Andreas, ...
We study the close circumstellar environment of the nearby S-type star Pi^1 Gruis using high spatial-resolution, mid-infrared observations from the ESO/VLTI. Spectra and visibilities were obtained...
Taking the measure of the universe: precision astrometry with SIM PlanetQuest (2008)
Unwin, Stephen C., Shao, Michael, Tanner, Angelle M., Allen, Ronald J., Beichman, Charles A., Boboltz, David, ...
Precision astrometry at microarcsecond accuracy has applications for a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument...
The close circumstellar environment of the semi-regular S-type star Pi^1 Gruis (2008)
Sacuto, Stéphane, Jorissen, Alain, Cruzalèbes, Pierre, Chesneau, Olivier, Ohnaka, Keiichi, Quirrenbach, Andreas, ...
We study the close circumstellar environment of the nearby S-type star Pi^1 Gruis using high spatial-resolution, mid-infrared observations from the ESO/VLTI. Spectra and visibilities were obtained...
The close circumstellar environment of the semi-regular S-type star Pi^1 Gruis (2008)
Sacuto, Stéphane, Jorissen, Alain, Cruzalèbes, Pierre, Chesneau, Olivier, Ohnaka, Keiichi, Quirrenbach, Andreas, ...
We study the close circumstellar environment of the nearby S-type star Pi^1 Gruis using high spatial-resolution, mid-infrared observations from the ESO/VLTI. Spectra and visibilities were obtained...
LUCIFER status report: summer 2008 (2008)
Mandel, Holger, Seifert, Walter, Hofmann, Reiner, Jütte, Marcus, Lenzen, Rainer, Ageorges, Nancy, ...
Commission 53: Extrasolar Planets (2008)
Mayor, Michel, Boss, Alan P., Butler, Paul R., Hubbard, William B., Ianna, Philip A., Kürster, Martin, ...
Commission 53 on Extrasolar Planets was created at the 2006 Prague General Assembly of the IAU, in recognition of the outburst of astronomical progress in the field of extrasolar planet discovery,...
LUCIFER status report: summer 2008 (2008)
Mandel, Holger, Seifert, Walter, Hofmann, Reiner, Jütte, Marcus, Lenzen, Rainer, Ageorges, Nancy, ...
LUCIFER is a NIR spectrograph and imager (wavelength range 0.9 to 2.5 micron) for the Large Binocular Telescope (LBT) on Mt. Graham, Arizona, working at cryogenic temperatures of less than 70K. Two...
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...
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...
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...
Andreas Quirrenbach, Jeff Cooke, David Mitchell, Neda Safizadeh, Hans Deeg
EXPORT team Abstract. A photometric search for transits by extrasolar planets in three open clusters has been carried out as part of the EXPORT project. We discuss the rationale for this program,...
: Over the past few years high-resolution imaging with adaptive optics has become an important technique with a wide variety of applications in Solar System physics, stellar astronomy, and...
Discovery Of A Substellar Companion To The K2 Iii Giant Draconis (2007)
Sabine Frink David, David S. Mitchell, Andreas Quirrenbach, Debra A. Fischer, Geoffrey W. Marcy, R. Paul Butler
We report precise radial velocity measurements of the K giant # Dra (HD 137759, HR 5744, HIP 75458), carried out at Lick Observatory, which reveal the presence of a substellar companion orbiting the...
Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest (2007)
Unwin, Stephen C., Shao, Michael, Tanner, Angelle M., Allen, Ronald J., Beichman, Charles A., Boboltz, David, ...
Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument...
Working Group on Extrasolar Planets (2007)
Boss, Alan P., Butler, R. Paul, Hubbard, William B., Ianna, Philip A., Kürster, Martin, Lissauer, Jack J., ...
The Working Group on Extrasolar Planets (hereafter the WGESP) was created at a meeting of the IAU Executive Council in 1999 as a Working Group of IAU Division III and was renewed for three more years...
Binary Stars in the Orion Nebula Cluster (2006)
Koehler, Rainer, Petr-Gotzens, Monika G., McCaughrean, Mark J., Bouvier, Jerome, Duchene, Gaspard, Quirrenbach, Andreas, ...
We report on a high-spatial-resolution survey for binary stars in the periphery of the Orion Nebula Cluster, at 5 - 15 arcmin (0.65 - 2 pc) from the cluster center. We observed 228 stars with...
Precise Radial Velocities of Giant Stars II. Pollux and its Planetary Companion (2006)
Reffert, Sabine, Quirrenbach, Andreas, Mitchell, David S., Albrecht, Simon, Hekker, Saskia, Fischer, Debra A., ...
It has long been speculated that the observed periodic radial velocity pattern for the K giant Pollux might be explained in terms of an orbiting planetary companion. We have collected 80...
Comparative Planetology and the Search for Life Beyond the Solar System (2006)
Beichman, Charles A., Fridlund, Malcolm, Traub, Wesley A., Stapelfeldt, Karl R., Quirrenbach, Andreas, Seager, Sara
The study of planets beyond the solar system and the search for other habitable planets and life is just beginning. Ground-based (radial velocity and transits) and space-based surveys (transits and...
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...
ELT instrument concepts: impact on telescope and adaptive optics design (2006)
Cunningham, Colin, Atad-Ettadgui, Eli, Bacon, Roland, Brandl, Bernhard, Cuby, Jean-Gabriel, Dalton, Gavin, ...
We report on the development of instrument concepts for a European ELT, expanding on studies carried out as part of the ESO OWL concept. A range of instruments were chosen to demonstrate how an ELT...
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).
Radial Velocity Variations in K Giants: Planets or Pulsations? (2005)
Hekker, Saskia, Reffert, Sabine, Quirrenbach, Andreas
Radial velocity observations of K giants have revealed periodic variations for some of the stars. The periods range from approximately 180 to 1000 or more days with velocity amplitudes ranging from...
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...
Towards characterization of exoplanetary atmospheres with the VLT Interferometer (2004)
Joergens, Viki, Quirrenbach, Andreas
The direct observation of extrasolar planets and their spectra is coming into reach with the new generation of ground-based near-IR interferometers, like the Very Large Telescope Interferometer...
Joergens, Viki, Quirrenbach, Andreas
Differential phase observations with a near-IR interferometer offer a way to obtain spectra of extrasolar planets. The method makes use of the wavelength dependence of the interferometer phase of the...
Russell, Adrian P., Monnet, Guy, Quirrenbach, Andreas, Bacon, Roland, Redfern, Michael, Andersen, Torben, ...
Designs for Extremely Large Telescopes (ELTs) are quite well advanced,but the requirements of instruments have had limited impact. Sinceprovision of a suitable environment for instruments is a...
Gisler, Daniel, Schmid, Hans Martin, Thalmann, Christian, Povel, Hans Peter, Stenflo, Jan O., Joos, Franco, ...
The science case of the CHEOPS planet finder for VLT (2004)
Gratton, Raffaele, Feldt, Markus, Schmid, Hans Martin, Brandner, Wolfgang, Hippler, Stefan, Neuhauser, R., ...
Galaxies Associated with z~4 Damped Lya Systems: I. Imaging and Photometric Selection (2002)
Prochaska, Jason X., Gawiser, Eric, Wolfe, Arthur M., Quirrenbach, Andreas, Lanzetta, Kenneth M., Chen, Hsiao-Wen, ...
This paper describes the acquisition and analysis of imaging data for the identification of galaxies associated with z~4 damped Lya systems. We present deep BRI images of three fields known to...
The Distance to SN 1999em in NGC 1637 from the Expanding Photosphere Method (2001)
Leonard, Douglas C., Filippenko, Alexei V., Gates, Elinor L., Li, Weidong, Eastman, Ronald G., Barth, Aaron J., ...
We present 30 optical spectra and 49 photometric epochs sampling the first 517 days after discovery of supernova (SN) 1999em, and derive its distance through the expanding photosphere method (EPM)....
First Investigation of the Clustering Environment of Damped Lyman Alpha Absorbers at z=4 (2001)
Gawiser, Eric, Wolfe, Arthur M., Prochaska, Jason X., Lanzetta, Kenneth M., Yahata, Noriaki, Quirrenbach, Andreas
We report the first observations of the clustering environment of damped Lyman alpha absorption systems at z=4. Color selection and photometric redshifts were used to select 44 candidate Lyman-break...
A Strategy for Identifying the Grid Stars for the Space Interferometry Mission (SIM) (2000)
Frink, Sabine, Quirrenbach, Andreas, Fischer, Debra, Roeser, Siegfried, Schilbach, Elena
We present a strategy to identify several thousand stars that are astrometrically stable at the micro-arcsecond level for use in the SIM (Space Interferometry Mission) astrometric grid. The...
Untersuchung der Kurzzeitvariabilität extragalaktischer Radioquellen / (1989)
Thesis (Doctoral)--Rheinischen Friedrich-Wilhelms-Universität zu Bonn, 1989.