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- Prieto, CA, et al.
(author)
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A consistency test of spectroscopic gravities for late-type stars
- 1999
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In: ASTROPHYSICAL JOURNAL. - : UNIV CHICAGO PRESS. - 0004-637X. ; 527:2, s. 879-892
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Journal article (peer-reviewed)abstract
- Chemical analyses of late-type stars are usually carried out following the classical recipe: LTE line formation and homogeneous, plane-parallel, flux-constant, and LTE model atmospheres. We review different results in the literature that have suggested si
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3. |
- Prieto, CA, et al.
(author)
-
Spectroscopic observations of convective patterns in the atmospheres of metal-poor stars
- 1999
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In: ASTROPHYSICAL JOURNAL. - : UNIV CHICAGO PRESS. - 0004-637X. ; 526:2, s. 991-1000
-
Journal article (peer-reviewed)abstract
- Convective line asymmetries in the optical spectrum of two metal-poor stars, Gmb 1830 and HD 140283, are compared to those observed for solar metallicity stars. The line bisectors of the most metal-poor star, the subgiant HD 140283, show a significantly l
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