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SOUTHERN MASSIVE STARS AT HIGH ANGULAR RESOLUTION: OBSERVATIONAL CAMPAIGN AND COMPANION DETECTION
- H. Sana, J. Bouquin, +12 authors H. Zinnecker
- Physics
- 22 September 2014
Multiplicity is one of the most fundamental observable properties of massive O-type stars and offers a promising way to discriminate between massive star formation theories. Nevertheless, companions… Expand
First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star
- J. Aufdenberg, A. Mérand, +10 authors N. Turner
- Physics
- 13 March 2006
We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K’ band at projected baselines between 103m and 273m. The measured visibility… Expand
Circumstellar material in the Vega inner system revealed by CHARA/FLUOR
- O. Absil, E. Folco, +11 authors H. Mcalister
- Physics
- 12 April 2006
Context. Only a handful of debris disks have been imaged up to now. Due to the need for high dynamic range and high angular resolution, very little is known about the inner planetary region, where… Expand
AN INTERFEROMETRIC STUDY OF THE FOMALHAUT INNER DEBRIS DISK. I. NEAR-INFRARED DETECTION OF HOT DUST WITH VLTI/VINCI*
- O. Absil, B. Mennesson, J. Bouquin, E. Folco, P. Kervella, J. Augereau
- Physics
- 21 August 2009
The innermost parts of dusty debris disks around main sequence stars are currently poorly known due to the high contrast and small angular separation with their parent stars. Using near-infrared… Expand
Annular Groove Phase Mask Coronagraph
We present a new phase mask coronagraph consisting in an optical vortex induced by a space-variant surface relief subwavelength grating. Phase mask coronagraphy is a recent technique aiming at… Expand
DUst around NEarby Stars. The survey observational results
- C. Eiroa, J. Marshall, +47 authors H. Walker
- Physics
- 1 May 2013
Context. Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system counterparts are the asteroid and Edgeworth-Kuiper… Expand
PIONIER: a 4-telescope visitor instrument at VLTI
- J. Bouquin, J. Berger, +43 authors N. Ventura
- Physics
- 9 September 2011
PIONIER stands for Precision Integrated-Optics Near-infrared Imaging ExpeRiment. It combines four 1.8m Auxilliary Telescopes or four 8m Unit Telescopes of the Very Large Telescope Interferometer… Expand
FUNDAMENTAL LIMITATIONS OF HIGH CONTRAST IMAGING SET BY SMALL SAMPLE STATISTICS
In this paper, we review the impact of small sample statistics on detection thresholds and corresponding confidence levels (CLs) in high-contrast imaging at small angles. When looking close to the… Expand
A near-infrared interferometric survey of debris-disc stars - III. First statistics based on 42 stars observed with CHARA/FLUOR
- O. Absil, D. Defrère, +17 authors N. Turner
- Physics
- 1 July 2013
Context. Dust is expected to be ubiquitous in extrasolar planetary systems owing to the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known because of the high… Expand
A near-infrared interferometric survey of debris disk stars. I. Probing the hot dust content aroun
- E. Folco, O. Absil, +16 authors Institute d'Astrophysique de Paris Warsaw University Observatory
- Physics
- 9 October 2007
Context. The quest for hot dust in the central region of debris disks re quires high resolution and high dynamic range imaging. Nearinfrared interferometry is a powerful means to directly det ect… Expand
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