LTE and non-LTE atmospheric lithium abundances for the K giant HD 9746

Citation
Yv. Pavlenko et al., LTE and non-LTE atmospheric lithium abundances for the K giant HD 9746, ASTRON REP, 43(10), 1999, pp. 671-678
Citations number
46
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY REPORTS
ISSN journal
10637729 → ACNP
Volume
43
Issue
10
Year of publication
1999
Pages
671 - 678
Database
ISI
SICI code
1063-7729(199910)43:10<671:LANALA>2.0.ZU;2-U
Abstract
The lithium abundance in the atmosphere of the lithium-rich giant HD 9746 ( K1 III), log N(Li) = 3.6 +/- 0.3, is determined by modeling resonance (lamb da 670.8 nm) and subordinate (lambda 610.4 nm) lithium lines. Allowance for non-LTE effects resolves the 0.45 dex discrepancy between the log N (Li) v alues derived from the resonance and subordinate doublets. The resulting li thium abundance exceeds the "cosmic" value (3.3 dex), suggesting a short-li ved lithium-enrichment phase in HD 9746.