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Accurate effective temperatures of the metal-poor benchmark stars HD140283, HD122563, and HD103095 from CHARA interferometry

Karovicova, I; White, Timothy R.; Nordlander, Thomas; Lind, K; Casagrande, Luca; Ireland, Michael; Huber, Daniel; Creevey, O; Mourard, D; Schaefer, G H; Gilmore, G; Chiavassa, A.; Wittkowski, M; Jofre, P; Heiter, U; Thevenin, F; Asplund, Martin


Large stellar surveys of the Milky Way require validation with reference to a set of ‘benchmark’ stars whose fundamental properties are well determined. For metal-poor benchmark stars, disagreement between spectroscopic and interferometric effective temperatures has called the reliability of the temperature scale into question. We present new interferometric measurements of three metal-poor benchmark stars, HD 140283, HD 122563, and HD 103095, from which we determine their effective...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society: Letters
DOI: 10.1093/mnrasl/sly010


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