Fundamental parameters for 222 B-type stars for the X-shooter Spectral Library

We use the MIDE3700 code to find effective temperatures (Teff) and surface gravities (log g) via the Barbier Chalonge Divan (BCD) method for 222 B-type stars in the ESO archive in preparation for their inclusion as an extension to the X-shooter Spectral Library (XSL). We find agreement of Δ log Teff...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2022-05, Vol.18 (S361), p.108-110
Main Authors: Larkin, C. J. K., Verro, Kristiina, Gonneau, Anaïs, Trager, S. C.
Format: Article
Language:English
Subjects:
Archives & records
Astronomical models
B stars
Libraries
Metallicity
Poster Paper
Stars & galaxies
Stellar age
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Summary:We use the MIDE3700 code to find effective temperatures (Teff) and surface gravities (log g) via the Barbier Chalonge Divan (BCD) method for 222 B-type stars in the ESO archive in preparation for their inclusion as an extension to the X-shooter Spectral Library (XSL). We find agreement of Δ log Teff ∼0.1σ and Δ log g ∼0.25σ of our results with a sample of literature stars. We populate a previously bare region of the XSL Kiel diagram in the ranges 9000 ≤ Teff ≤ 23000 K and 2.8 ≤ log g ≤ 4.0 dex, and thereby extend the lower age limit of XSL stellar population models by up to a factor ∼10 at [Fe/H] = −1.2 dex, and by a factor ∼2 at Solar metallicity.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921322003258