Chromospheric Activity of Weak-Lined T Tauri Stars

Details Chromospheric Activity of Weak-Lined T Tauri Stars Chromospheric Activity of Weak-Lined T Tauri Stars

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap%26ss.263..231m&link_type=abstract

Astrophysics and Space Science, v. 263, Issue 1/4, p. 231-234 (1998).

Astronomy and Astrophysics

Astrophysics

Scientific paper

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.

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