Hans Publishers, Astronomy & Astrophysics, 3(407), p. 935-939
DOI: 10.1051/0004-6361:20030924
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We present the analysis of FUSE observations of two Herbig AeBe stars known to harbor young circumstellar disks: HD 100546 and HD 163296. In both cases we detect absorption lines from warm and dense H2. The thermalization of the rotational levels up to J~4 allows evaluation of the temperature, density and typical size of the absorbing layer. These quantities are consistent with absorption of the light of the central star by a thin layer of a circumstellar disk seen at an intermediate inclination. Comment: 5 pages, 4 figures, to be published in A&A