Chromospheric Activity of Weak-Lined T Tauri Stars |
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| Authors: | D Montes |
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| Institution: | (1) Dpt. de Astrofísica. Facultad de C. Físicas, Universidad Complutense de Madrid, E-28040 Madrid, Spain |
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| Abstract: | A summary of our ongoing high and medium resolution optical observational program, devoted to the study of chromospheric activity
of pre-main sequence stars, is reported here. The study is centered in bona-fid weak-lined T Tauri stars (WTTS) in Taurus
with known rotational period, and in WTTS recently discovered by the ROSAT All-Sky Survey. It is our purpose to quantify the
phenomenology of the chromospheric activity of each star determining stellar surface fluxes in the more important chromospheric
activity indicators (Ca II H & K, Hβ, Hα, Ca II IRT) as well as to obtain the Li I abundance, a better determination of the
stellar parameters, spectral type, and possible binarity. By using these chromospheric excess emissions we will study the
flux-flux and rotation-activity relationships in order to get insights into the mechanisms which drive solar-like stellar
activity in this kind of low mass pre-main sequence stars.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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