Lithium abundances among solar-type pre-main-sequence stars
1989; Institute of Physics; Volume: 98; Linguagem: Inglês
10.1086/115230
ISSN1538-3881
AutoresK. M. Strom, Francis P. Wilkin, S. E. Strom, R. Seaman,
Tópico(s)Astronomy and Astrophysical Research
ResumoMeasurements of Li I 6707 A line strengths were carried out for two samples of pre-main-sequence (PMS) stars (L 1641 and Taurus-Auriga), and the Li abundances estimated for PMS stars are compared with those deduced from observations of Li line strengths for main-sequence stars in the Alpha Persei cluster. It was found that the maximum Li abundances among the PMS stars with solar mass values greater than 1.0 exceed the maximum abundances for Alpha Per stars by at least 0.3 dex. Some PMS stars, including few apparently young stars, showed large (greater than 1.0 dex) Li depletion, and some apparently old PMS stars showed little or no depletion.
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