Pre-main sequence lithium burning. I: Weak T Tauri stars
In: Astronomy and astrophysics (Berlin. Print), Jg. 282 (1994), Heft 2, S. 503-517
Online
academicJournal
- print, 54 ref
Zugriff:
We report high-resolution spectroscopic observations for a sample of 38 T Tauri stars (TTS), complemented by UBVRI photometry of 13 TTS, and CCD VRI photometry for 2 visual binaries. Based on these observations and data taken from the literature, we derive lithium abundances in 53 TTS, concentrating on weak-line TTS (WTTS). The sample spans the range in spectral types from K0-M3, approximately corresponding to masses between 1.2 and 0.2 M○.. Our study of the statistical distribution of lithium abundances in WTTS gives the following results: (1) At luminosities ≥0.9 L○. the Li abundances are remarkably uniform. The mean value, log N(Li)=3.1, coincides with the cosmic lithium abundance. (2) We find strong evidence for PMS lithium burning.
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Pre-main sequence lithium burning. I: Weak T Tauri stars
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Autor/in / Beteiligte Person: | MARTIN, E. L ; REBOLO, R ; MAGAZZU, A ; PAVLENKO, YA. V |
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Zeitschrift: | Astronomy and astrophysics (Berlin. Print), Jg. 282 (1994), Heft 2, S. 503-517 |
Veröffentlichung: | Les Ulis: EDP Sciences, 1994 |
Medientyp: | academicJournal |
Umfang: | print, 54 ref |
ISSN: | 0004-6361 (print) |
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