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astro-ph2004
Astrometric and Spectroscopic Confirmation of a Brown Dwarf Companion to GSC 08047-00232
G. Chauvin, A. -M. Lagrange, F. Lacombe +8
We report VLT/NACO imaging observations of the stars GSC 08047-00232 and HIP 6856, probable members of the large Tucana-Horologium association. During our previous ADONIS/SHARPII d…
astro-ph2000
Dust disks around old Pre Main-Sequence stars: HST/NICMOS2 scattered light images and modeling
J. C. Augereau, A. M. Lagrange, D. Mouillet +1
We present recent near-infrared detections of circumstellar disks around the two old PMS Herbig stars HD 141569 and HD 100546 obtained with the HST/NICMOS2 camera. They reveal exte…
astro-ph1999
On the HR 4796A circumstellar disk
J. C. Augereau, A. M. Lagrange, D. Mouillet +2
We investigate in details the properties of the disk surrounding the 8 Myr old star HR 4796A, one of the few stars bringing precious clues to better understand the scenario which l…