The Case of AB Aurigae's Disk in Polarized Light: Is There Truly a Gap? (2009)
Perrin, Marshall D., Schneider, Glenn, Duchene, Gaspard, Pinte, Christophe, Grady, Carol A., Wisniewski, John P., ...
Using the NICMOS coronagraph, we have obtained high-contrast 2.0 micron imaging polarimetry and 1.1 micron imaging of the circumstellar disk around AB Aurigae on angular scales of 0.3-3 arcsec...
Phase Referencing in Optical Interferometry (2008)
Filho, Mercedes E., Garcia, Paulo, Duvert, Gilles, Duchene, Gaspard, Thiebaut, Eric, Young, John, ...
One of the aims of next generation optical interferometric instrumentation is to be able to make use of information contained in the visibility phase to construct high dynamic range images. Radio and...
Phase Closure Image Reconstruction for Future VLTI Instrumentation (2008)
Filho, Mercedes E., Renard, Stephanie, Garcia, Paulo, Duvert, Gilles, Duchene, Gaspard, Thiebaut, Eric, ...
Classically, optical and near-infrared interferometry have relied on closure phase techniques to produce images. Such techniques allow us to achieve modest dynamic ranges. In order to test the...
Phase closure image reconstruction for future VLTI instrumentation (2008)
Filho, Mercedes E, Renard, Stephanie, Garcia, Paulo, Duvert, Gilles, Duchene, Gaspard, Thiebaut, Eric, ...
Optical and Infrared Interferometry.
Phase referencing in optical interferometry (2008)
Filho, Mercedes E, Garcia, Paulo, Duvert, Gilles, Duchene, Gaspard, Thiebaut, Eric, Young, John, ...
Optical and Infrared Interferometry.
Discovery of an extended debris disk around the F2V star HD 15745 (2007)
Kalas, Paul, Duchene, Gaspard, Fitzgerald, Michael P., Graham, James R.
Using the Advanced Camera for Surveys aboard the Hubble Space Telescope, we have discovered dust-scattered light from the debris disk surrounding the F2V star HD 15745. The circumstellar disk is...
The AU Microscopii Debris Disk: Multiwavelength Imaging and Modeling (2007)
Fitzgerald, Michael P., Kalas, Paul G., Duchene, Gaspard, Pinte, Christophe, Graham, James R.
(abridged) Debris disks around main sequence stars are produced by the erosion and evaporation of unseen parent bodies. AU Microscopii (GJ 803) is a compelling object to study in the context of disk...
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...
Monte Carlo radiative transfer in protoplanetary disks (2006)
Pinte, Christophe, Menard, Francois, Duchene, Gaspard, Bastien, Pierre
We present a new continuum 3D radiative transfer code, MCFOST, based on a Monte-Carlo method. MCFOST can be used to calculate (i) monochromatic images in scattered light and/or thermal emission, (ii)...
Radiative transfer in protoplanetary disks (2006)
Pinte, Christophe, Menard, Francois, Duchene, Gaspard
We present a new 3D continuum radiative transfer code, MCFOST, based on a Monte-Carlo method. The reliability and efficiency of the code is tested by comparison with five different radiative transfer...
Discovery of an Optically Thick, Edge-on Disk around the Herbig Ae star PDS 144N (2006)
Perrin, Marshall D., Duchene, Gaspard, Kalas, Paul, Graham, James R.
We have discovered an optically thick, edge-on circumstellar disk around a Herbig Ae star in the binary system PDS 144, providing the first intermediate-mass analog of HK Tau and similar T Tauris....
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Menard, Francois, Duchene, Gaspard
In this paper we readdress the issue of the alignment of Classical T Tauri stars with the magnetic field in the Taurus-Auriga molecular cloud. Previous studies have claimed that the jet axis of...
Non coeval young multiple systems? On the pairing of protostars and T Tauri stars (2003)
Duchene, Gaspard, Ghez, Andrea, McCabe, Caer
We summarize here the observed properties of ``infrared companions'' to T Tauri stars and argue that their observational properties are identical to those of Class I sources. They may therefore be...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Near-infrared imaging polarimetry of the GG Tau circumbinary ring (2000)
Silber, Joel, Gledhill, Tim, Duchene, Gaspard, Menard, Franccois
We present 1 micron Hubble Space Telescope/NICMOS resolved imaging polarimetry of the GG Tau circumbinary ring. We find that the ring displays east-west asymmetries in surface brightness as well as...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Le travail presente dans cette these a pour objet l'etude de certaines proprietes des systemes binaires pre-sequence principale: la proportion de ces systemes dans differentes populations,...
Accretion in Taurus PMS binaries: a spectroscopic study (1999)
Duchene, Gaspard, Monin, Jean-Louis, Bouvier, Jerome, Menard, Francois
We present low-resolution optical spectra of each component of 10 T Tauri (TT) binary systems with separations ranging from 0.9" to 3.5" and located in the Taurus star-forming region. We derive the...
Duchene, Gaspard, Bouvier, Jerome, Simon, Theodore
We report on a near-infrared adaptive optics survey of a sample of 66 low-mass members of the pre-main sequence stellar cluster IC 348. We find 12 binary systems in the separation range 0.1-8.0...
Various surveys of low-mass binaries in star forming regions have been performed in recent years. They reached opposite conclusions concerning possible binary excesses in some of these associations....