FUSE observations of H2 around the Herbig AeBe stars HD 100546 and HD 163296

Abstract

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.

arXiv comment5 pages, 4 figures, to be published in A&A

References in corpus (7)

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• On-Orbit Performance of the Far Ultraviolet Spectroscopic Explorer (FUSE) Satellite
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Cited by in corpus (13)

• A Far-ultraviolet Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars
• The Origins of Fluorescent H2 Emission From T Tauri~Stars
• Constraining the structure of the planet-forming region in the disk of the Herbig Be star HD 100546
• Warm molecular gas and kinematics in the disc around HD 100546
• A survey for near-infrared H2 emission in Herbig Ae/Be stars: emission from the outer disks of HD 97048 and HD 100546
• A Resolved Circumstellar Disk around the Herbig Ae Star HD 100546 in the Thermal Infrared
• Molecular hydrogen in the circumstellar environments of Herbig Ae/Be stars probed by FUSE
• Observational diagnostics of gas in protoplanetary disks
• Modeling of diffuse molecular gas applied to HD 102065 observations
• Upper limits on CO 4.7 micron emission from disks around five Herbig Ae/Be stars
• Where is the warm H2 ? A search for H2 emission from disks around Herbig Ae/Be stars
• FUSE observations of molecular hydrogen on the line of sight towards HD141569A
• Building galaxies, stars, planets and the ingredients for life between the stars. A scientific proposal for a European Ultraviolet-Visible Observatory (EUVO)