Lithium Abundances from Optical High-resolution Spectroscopy of Weak-line T Tauri Stars

Details Lithium Abundances from Optical High-resolution Spectroscopy of Weak-line T Tauri Stars Lithium Abundances from Optical High-resolution Spectroscopy of Weak-line T Tauri Stars

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...723.1542x&link_type=abstract

The Astrophysical Journal, Volume 723, Issue 2, pp. 1542-1548 (2010).

Astronomy and Astrophysics

Astronomy

3

Stars: Abundances, Stars: Evolution, Stars: Pre-Main Sequence

Scientific paper

We present high-resolution spectroscopic observations for a sample of 19 weak-line T Tauri stars (WTTSs). Based on these observations and data of 108 WTTSs taken from the literature, we derive lithium abundances for 127 WTTSs. Investigation of a possible relation between lithium and rotation in WTTSs shows that: (1) rapidly rotating WTTSs have comparatively lower lithium abundances than their slower rotating counterparts; (2) in the spectral-type range G0-K0, most of the WTTSs share the same Li content irrespective of their T eff; and (3) active late-type binaries do not obey the correlation between lithium abundances and rotation periods, since the tidally locked rotation of the late-type binary system leads naturally to slower lithium destruction rates.

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