Bibcode
DOI
Magazzu, Antonio; Rebolo, Rafael; Pavlenko, Iakov V.
Bibliographical reference
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 392, no. 1, June 10, 1992, p. 159-171. Research supported by Ministry of Education and Science of Spain.
Advertised on:
6
1992
Journal
Citations
99
Refereed citations
88
Description
A study on the lithium abundance in 36 T Tauri stars (mass range
0.4-2.25 solar masses), partly based on high-dispersion spectra taken
with the Isaac Newton Telescope, is presented. A study of non-LTE
effects in the formation of the lithium double in T Tauri stars and
derived corrections to the abundances in the LTE in the range 1.0-4.0
log N(Li) is presented. Tor T(eff) of 400-4500 K, a significant upward
correction to the LTE abundance (about 0.3-0.6 dex) is found. For T(eff)
close to 500 K, smaller corrections (about 0.2 dex), and for log N(Li)
greater than about 3, downward corrections (about 0.1 dex) are found.
The initial value of the lithium abundance in T Tauri stars is estimated
at 3.2 +/- 0.1, which is in close agreement with the accepted present
cosmic abundance.