Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf...73d&link_type=abstract
SF2A-2004: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 14-18, 2004. Edited by F. Combes, D. Barret
Astronomy and Astrophysics
Astrophysics
Scientific paper
Circumstellar disks are ubiquitous around stars with intermediate ages around a few million years. They are a natural outcome of the star formation process, because of the need of angular momentum conservation during the collapse of the natal molecular core. Herbig Ae/Be stars represent a class of intermediate mass, pre-main sequence stars. By studying the characteristics and evolution of these disks i.e their dust composition and structure, one can put constraints on disk and planet formation models. Thanks to 20.5 microns imaging data obtained with the CAMIRAS instrument installed on the CFHT, we could resolve a set of disks around HD150193, HD 135344, HD 163296, HD 98800 showing unexpected disk structures in emission at distances of more than 100 AU from the central star.
Doucet Coralie
Lagage Pierre Olivier
Pantin Eric
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