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arXiv · 1208.6226

Properties of hot subdwarfs in the GALEX survey

Peter Nemeth·Adela Kawka·Stephane Vennes
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Abstract

We have analyzed a sample of hot subdwarfs (sdB, sdO) selected from the GALEX ultraviolet sky survey. Applying a model atmosphere analysis we determined the temperature, surface gravity, and helium-to-hydrogen abundance ratio, and obtained preliminary constraints on the CNO abundance for a sample of 181 stars. Adopting colourimetric (ultraviolet-infrared) and quantitative spectral decomposition we also investigated the incidence of solar type or earlier (A, F, G) companions.

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Peter Nemeth, Adela Kawka, Stephane Vennes. 2012-08-30. Properties of hot subdwarfs in the GALEX survey. https://arxiv.org/abs/1208.6226

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