Periodical light variations of t tauri stars as a result of disk accretion

Details Periodical light variations of t tauri stars as a result of disk accretion Periodical light variations of t tauri stars as a result of disk accretion

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..211l&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 211-214

Astronomy and Astrophysics

Astrophysics

2

Pre-Main Sequence Stars, Spots, Accretion, Shock Waves

Scientific paper

I argue that temperatures of spots, responsible for observed periodical light variations of T Tauri stars (TTS), are not known with reliable accuracy to discriminate between chromospheric and accretion theories of TTS 's phenomenon. The hypothesis is set up that spots on classical TTS (CTTS) are due to heating of stellar surface by radiation from a collisional accretion shock, whereas spots on weak line TTS (WTTS), at least in some cases, are connected with a collisionless accretion shock rather than chromospheric activity. Possible scenarios of WTTS interaction with circumstellar matter are discussed.

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