Astronomy and Astrophysics · 2012 · 17 citations · 23 references
Natural SciencesAstronomyPhysicsAstrophysicsSpectroscopyStellar AstronomyRed GiantsStellar AstrophysicsStellar EvolutionStellar PopulationsStellar SpectroscopyStellar StructureElemental Abundance AnalysisElemental Abundance PatternsLight Element AbundancesMetal-poor Host StarsMetal-rich Host StarsStellar Abundance AnalysisStellar AbundancesStellar Metallicities
Context. HD 140283 is a nearby (V = 7.7) subgiant metal-poor star, extensively analysed in the literature. Although many spectra have been obtained for this star, none showed a signal-to-noise (S/N) ratio high enough to enable a very accurate derivation of abundances from weak lines.
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