Bouret, Jean-Claude

Contact Email: Jean-Claude.Bouret@astrsp-mrs.fr
Institute: Laboratoire d'Astrophysique de Marseille
First Coauthor: Magali Deleuil
Institute: Laboratoire d'Astrophysique de Marseille
Research URL:http://www.astrsp-mrs.fr/
Subject Area: Stellar Atmospheres, Circumstellar Material
Waveband: Far Ultraviolet
Technique: Spectroscopy
Presentation: Poster Display
Title: Investigating a chromosphere-corona scenario for the hot gas component of $\beta$ Pictoris, as revealed by FUSE.
Abstract: The FUSE satellite revealed the first emission line spectrum of $\beta$ Pictoris. Broad emission lines due to highly ionized species, C III and O VI, are well detected above the very low continuum level. The mere presence of such lines in $\beta$ Pictoris spectrum is evidence of a complex stellar environment, including dense and hot regions, within a few stellar radii of the photosphere. Based on the interpretation of the apparent structure of the lines profiles, it has been concluded that accretion and solar-like activity are the most likely processes for the gas heating. We present the results we obtained with a model including a solar-like extended chromosphere-corona complex and a weak wind.