Optical and X-Ray Observations of T-Tauri Stars

Details Optical and X-Ray Observations of T-Tauri Stars Optical and X-Ray Observations of T-Tauri Stars

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983rmxaa...7..127k&link_type=abstract

Herbig-Haro Objects and T Tauri Stars. Revista Mexicana de Astronomia y Astrofisica, Vol. 7, p.127, 1983

Astronomy and Astrophysics

Astronomy

4

Scientific paper

Major results from recent observations of T Tauri stars are reviewed. These stars appear to be strongly concentrated along the convective tracks in the HR diagram. It is now well established that T Tauri stars are not only in the pre-main sequence phase but are actually in a pre-radiative equilibrium phase. The combined optical, IUE, and X-ray data lead to a picture of violent chromospheric activity which is strongly tied to the solar analogy. New measurements of stellar rotation are described and the angular momentum history of the stars is outlined. In conclusion, it is stated that T Tauri stars are probably past the dominantly infall phase associated with dynamical collapse and represent instead a transition phase to the normal photosphere, chromosphere, corona, and stellar wind stage.

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