A metallicity-spin temperature relation in damped Lyman-$\alpha$ systems (2009)
Kanekar, Nissim, Smette, Alain, Briggs, Frank H., Chengalur, Jayaram N.
We report evidence for an anti-correlation between spin temperature $T_s$ and metallicity [Z/H], detected at $3.6 \sigma$ significance in a sample of 26 damped Lyman-$\alpha$ absorbers (DLAs) at...
Vergani, Susanna D., Petitjean, Patrick, Ledoux, Cedric, Vreeswijk, Paul, Smette, Alain, Meurs, Evert J. A.
We analyse the properties of MgII absorption systems detected along the sightlines toward GRBs using a sample of 10 GRB afterglow spectra obtained with VLT-UVES over the past six years. The S/N ratio...
Ryde, Nils, Edvardsson, Bengt, Gustafsson, Bengt, Eriksson, Kjell, Kaufl, Hans Ulrich, Siebenmorgen, Ralf, ...
The formation and evolution of the Milky Way bulge is not yet well understood and its classification is ambiguous. Constraints can, however, be obtained by studying the abundances of key elements in...
Mid-infrared imaging of 25 local AGN with VLT-VISIR (2008)
Horst, Hannes, Duschl, Wolfgang J., Gandhi, Poshak, Smette, Alain
Aims. High angular resolution N-band imaging is used to discern the torus of active galactic nuclei (AGN) from its environment in order to allow a comparison of its mid-infrared properties to the...
Fox, Andrew J., Ledoux, Cédric, Vreeswijk, Paul M., Smette, Alain, Jaunsen, Andreas O.
(Abridged) We use VLT/UVES high-resolution optical spectroscopy of seven GRB afterglows at z_GRB>2 to investigate circumburst and interstellar plasma in the host galaxies. Our sample consists of GRBs...
Spectroastrometric imaging of molecular gas within protoplanetary disk gaps (2008)
Pontoppidan, Klaus M., Blake, Geoffrey A., Van Dishoeck, Ewine F., Smette, Alain, Ireland, Michael J., Brown, Joanna
We present velocity-resolved spectroastrometric imaging of the 4.7 µm rovibrational lines of CO gas in protoplanetary disks using the CRIRES high-resolution infrared spectrometer on the Very Large...
Spectro-astrometric imaging of molecular gas within protoplanetary disk gaps (2008)
Pontoppidan, Klaus M., Blake, Geoffrey A., Van Dishoeck, Ewine F., Smette, Alain, Ireland, Michael J., Brown, Joanna
We present velocity-resolved spectro-astrometric imaging of the 4.7 $\mu$m rovibrational lines of CO gas in protoplanetary disks using the CRIRES high resolution infrared spectrometer on the Very...
The fluorine abundance in a Galactic Bulge AGB star measured from CRIRES spectra (2008)
Uttenthaler, Stefan, Lebzelter, Thomas, Aringer, Bernhard, Käufl, Hans-Ulrich, Siebenmorgen, Ralf, Smette, Alain
We present measurements of the fluorine abundance in a Galactic Bulge Asymptotic Giant Branch (AGB) star. The measurements were performed using high resolution K-band spectra obtained with the CRIRES...
Spectroastrometric imaging of molecular gas within protoplanetary disk gaps (2008)
Pontoppidan, Klaus M., Blake, Geoffrey A., Van Dishoeck, Ewine F., Smette, Alain, Ireland, Michael J., Brown, Joanna
The mid IR -- hard X-ray correlation in AGN and its implications for dusty torus models (2007)
Horst, Hannes, Gandhi, Poshak, Smette, Alain, Duschl, Wolfgang J.
Context: We investigate mid-infrared and X-ray properties of the dusty torus invoked in the unification scenario for active galactic nuclei. Aims: We use the relation between mid IR and hard X-ray...
Haas, Martin, Siebenmorgen, Ralf, Pantin, Eric, Horst, Hannes, Smette, Alain, Kaufl, Hans-Ulrich, ...
Half of the Seyfert-2 galaxies escaped detection of broad lines in their polarised spectra observed so far. Some authors have suspected that these non-HBLRs contain real Sy2 nuclei without intrinsic...
Reiners, Ansgar, Seifahrt, Andreas, Käufl, Hans Ulrich, Siebenmorgen, Ralf, Smette, Alain
We show individual high resolution spectra of components A, B, and C of the nearby late-M type multiple system LHS 1070. Component A is a mid-M star, B and C are known to have masses at the threshold...
Intervening Metal Systems in GRB and QSO sight-lines: The Mgii and Civ Question (2007)
Sudilovsky, Vladimir, Savaglio, Sandra, Vreeswijk, Paul, Ledoux, Cedric, Smette, Alain, Greiner, Jochen
Prochter et al. 2006 recently found that the number density of strong intervening 0.5
Siebenmorgen, Ralf, Smette, Alain, Käufl, Hans Ulrich, Seifahrt, Andreas, Uttenthaler, Stefan, Bik, Arjan, ...
Intervening metal systems in GRB and QSO sight lines: the Mg-II and C-IV question (2007)
Sudilovsky, Vladimir, Savaglio, Sandra, Vreeswijk, Paul, Ledoux, Cédric, Smette, Alain, Greiner, Jochen
The small dispersion of the mid IR -- hard X-ray correlation in AGN (2006)
Horst, Hannes, Smette, Alain, Gandhi, Poshak, Duschl, Wolfgang J.
Context: We investigate mid-infrared and X-ray properties of the dusty torus in unification scenarios for active galactic nuclei. Aims: We use the relation between mid IR and hard X-ray luminosities...
Levan, Andrew, Fruchter, Andrew, Rhoads, James, Mobasher, Bahram, Tanvir, Nial, Gorosabel, Javier, ...
We present near-infrared (nIR) and optical observations of the afterglow of GRB 030115. Discovered in an infrared search at Kitt Peak 5 hours after the burst trigger, this afterglow is amongst the...
Three intervening galaxy absorbers towards GRB060418: faint and dusty? (2006)
Ellison, Sara L., Vreeswijk, Paul, Ledoux, Cedric, Willis, Jon P., Jaunsen, Andreas, ...
We present an analysis of three strong, intervening Mg II absorption systems (z_abs = 0.603, 0.656, 1.107) towards the optical afterglow of gamma-ray burst (GRB) 060418. From high resolution UVES...
Claeskens, Jean-François, Smette, Alain, Vandenbulcke, Luc, Surdej, Jean
All-sky, multicolour, medium deep (V similar or equal to 20) surveys have the potentiality of detecting several hundred thousands of quasi-stellar objects (QSOs). Spectroscopic confirmation is not...
Lensing properties of 7 damped Lyman-alpha absorbing galaxy-QSO pairs (2005)
Brun, Vincent Le, Smette, Alain, Surdej, Jean, Claeskens, Jean-Francois
Le Brun et al. (1997) presented the first identifications of the galaxies giving rise to 7 intermediate redshift damped Ly-alpha (DLA) absorption systems. Here, we study the gravitational lensing...
Expansion and Collapse in the Cosmic Web (2005)
Rauch, Michael, Becker, George D., Viel, Matteo, Sargent, Wallace L. W., Smette, Alain, Simcoe, Robert A., ...
We study the kinematics of the gaseous cosmic web at high redshift with Lyman alpha forest absorption in multiple QSO sightlines. Using a simple analytic model and a cosmological hydrodynamic...
The XMM-LSS survey : Survey design and first results* (2004)
Pierre, Marguerite, Valtchanov, Ivan, Altieri, Bruno, Andreon, Stefano, Bolzonella, Micol, Bremer, Malcolm, ...
HST/STIS observations of the HeII Gunn-Peterson effect towards HE 2347-4342 (2000)
Smette, Alain, Heap, Sara R., Williger, Gerard M., Tripp, Todd M., Jenkins, Edward B., Songaila, Antoinette
We present an HST STIS spectrum of the HeII Gunn-Peterson effect towards HE2347-4342. Compared to the previous HST GHRS data obtained by Reimers et al. (1997), the STIS spectrum has a much improved...
Lensing properties of 7 damped Lyman-alpha absorbing galaxy-QSO pairs (2000)
Brun, Vincent Le, Smette, Alain, Surdej, Jean, Claeskens, Jean-Francois
Le Brun et al. (1997) presented the first identifications of the galaxies giving rise to 7 intermediate redshift damped Ly-alpha (DLA) absorption systems. Here, we study the gravitational lensing...
Wide Field Imaging of the Hubble Deep Field-South Region I: Quasar Candidates (2000)
Palunas, Povilas, Collins, Nicholas R., Gardner, Jonathan P., Hill, Robert S., Malumuth, Eliot M., Smette, Alain, ...
We present candidate quasars from a multi-color (uBVRI + narrow-band) imaging survey of 1/2 square degree around the Hubble Deep Field - South. We identify 154 candidate quasars with B < 23 using...
Lensing properties of 7 damped Lyman-alpha absorbing galaxy-QSO pairs (2000)
Brun, Vincent Le, Smette, Alain, Surdej, Jean, Claeskens, Jean-Francois
Le Brun et al. (1997) presented the first identifications of the galaxies giving rise to 7 intermediate redshift damped Ly-alpha (DLA) absorption systems. Here, we study the gravitational lensing...
Lensing properties of 7 damped Lyman-alpha absorbing galaxy-QSO pairs (2000)
Brun, Vincent Le, Smette, Alain, Surdej, Jean, Claeskens, Jean-Francois
Le Brun et al. (1997) presented the first identifications of the galaxies giving rise to 7 intermediate redshift damped Ly-alpha (DLA) absorption systems. Here, we study the gravitational lensing...
Fruchter, Andrew S., Thorsett, S. E., Metzger, Mark R., Sahu, Kailash C., Petro, Larry, Livio, Mario, ...
We report on HST and Palomar optical images of the field of GRB 990123, obtained on 8 and 9 February 1999. We find that the optical transient (OT) associated with GRB 990123 is located on an...
Lopez, Sebastian, Reimers, Dieter, Rauch, Michael, Sargent, Wallace L. W., Smette, Alain
Using new HST/FOS, NTT/EMMI, and Keck/HIRES spectra of the gravitationally-lensed double QSO HE 1104-1805 AB (z=2.31, \theta=3.2), and assuming UV photoionization by a metagalactic radiation field,...
HST Observations of the QSO pair Q1026-0045A,B (1998)
Petitjean, Patrick, Surdej, Jean, Smette, Alain, Shaver, Peter, Muecket, Jan, Remy, Marc
The spatial distribution of the Ly$\alpha$ forest is studied using new HST data for the quasar pair Q~1026--0045 A and B at $z_{em}$ = 1.438 and 1.520 respectively. The angular separation is 36...
Damped LYalpha Absorbers and Gravitational Lensing (1997)
Smette, Alain, Claeskens, Jean*-François, Surdej, Jean
Structure and Evolution of the Intergalactic Medium from QSO Absorption Line System
A damped Ly-alpha candidate at z~0.1 toward Q 0439-433 (1996)
Petitjean, Patrick, Theodore, Bertrand, Smette, Alain, Lespine, Yannick
We report on the detection of a z_gal=0.101 galaxy projected on the sky at 4.2 arcsec (or 5.2 h^{-1} kpc for q_o=0.5) from the quasar Q 0439-433 (z_em=0.594). The HST spectrum of the quasar shows...
Gravitational redshift in the NGC 4258 disk? (1995)
Smette, Alain, Kuijken, Konrad
The recent observations of high-velocity maser emissions in NGC 4258 by Myoshi et al provide strong evidence for a central object of mass 3.6 10**7 solar masses in the nucleus of this galaxy based on...