2000/01/01 by J.‐C. Augereau, J. C. Augereau, Augereau, J. C. +7
Engineering · Physics and Astronomy · #Astrophysics and Star Formation Studies #Space Exploration and Technology #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0010217
6 pages
arxiv created 2000/10/11 · arxiv updated 2009/12/01
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 extended structures larger than 350-400 AU in radius. While the HD 100546 disk appears as a continuous disk down to 40 AU, the HD 141569 environment seems more complex, splitted at least into two dust populations. As a convincing example, the full modeling of the disk surrounding HR 4796, another old PMS star, is detailed and confronted with more recent observations.