EUV and Soft X-ray Probes of the Accretion and Coronae in T Tauri Stars

Details EUV and Soft X-ray Probes of the Accretion and Coronae in T Tauri Stars EUV and Soft X-ray Probes of the Accretion and Coronae in T Tauri Stars

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.5203w&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #52.03; Bulletin of the American Astronomical Society, Vol. 34, p.727

Astronomy and Astrophysics

Astronomy

Scientific paper

The classical T Tauri stars are complex systems, consisting of a star, a circumstellar disk, and mass infall and outflow. In the UV, EUV, and soft X-ray spectral regions the emissions probe an apparently solar-like stellar chromosphere and corona as well as the mass accretion. I shall review the current models for T Tauri stars, supported with recent spectral observations from the HST, FUSE, and XMM. The EUV is the region of choice for investigating the mass accretion, because models predict a 105-106K shock. Unfortunately, no classical T Tauri star has been detected in the EUV because of interstellar and circumstellar extinction. Therefore, I shall concentrate on how hard EUV (soft X-ray) emission can be diagnostic of the environments of the extreme classical T Tauri stars, and shall suggest some requirements for future EUV/soft X-ray missions.

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