The Astrophysical Journal Supplement Series

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ISSN / EISSN : 0067-0049 / 1538-4365
Published by: American Astronomical Society (10.3847)
Total articles ≅ 6,569
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The Astrophysical Journal Supplement Series, Volume 256; https://doi.org/10.3847/1538-4365/ac2508

Abstract:
A new grid of detailed atmosphere model spectra for hot and moderately cool subdwarf stars is presented. High-resolution spectra and synthetic photometry are calculated in the range from 1000–10,000 Å using non-LTE fully line-blanketed atmosphere structures. Our grid covers eight temperatures within 10,000 ≤ Teff [K] ≤ 65,000, three surface gravities in the range 4.5 ≤ log g [cgs] ≤ 6.5, two helium abundances matching two extreme helium-rich and helium-poor scenarios, and two limiting metallicity boundaries regarding both solar ([Fe/H] = 0) and Galactic halos ([Fe/H] = −1.5 and [α/Fe] = +0.4). Besides its application in the determination of fundamental parameters of subdwarfs in isolation and in binaries, the resulting database is also of interest for population synthesis procedures in a wide variety of stellar systems.
Roark Habegger, Fabian Heitsch
The Astrophysical Journal Supplement Series, Volume 256; https://doi.org/10.3847/1538-4365/ac2511

Yuan You, , , Shu Zhang, Xue-Feng Lu, Juan Zhang, Gang Li, Zhi Chang, Yu-Peng Chen, Ming-Yu Ge, et al.
The Astrophysical Journal Supplement Series, Volume 256; https://doi.org/10.3847/1538-4365/ac16db

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