Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sf2a.conf..229l&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
Accretion discs aroung young stars are fascinating not only because they are thought to give birth to planets, but also for the challenging complexity of the physical phenomena they conceal. In particular, irradiation from the central star is generally accepted as an efficient heating process in the outer zones of these discs, resulting in a flared structure and a strong IR excess. In massive discs the gravity of the disc (self-gravity) tends, to the contrary, to flatten the disc around the midplane and should strongly decrease the IR excess. In some T Tauri discs (e.g. T Tau, SU Aur) the latter phenomenon is likely to have an influence at 10-100 AU from the star. However, no simulation has included both phenomena and self-gravity has been mostly studied in discs heated by the viscosity only. Using a 1+1D transfer code after Malbet, Lachaume, & Monin (2001) taking viscous heating and irradiation into account, I investigate the influence of self-gravity in irradiated circumstellar discs.
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