Properties of Hot Subdwarfs in the GALEX Survey

Details Properties of Hot Subdwarfs in the GALEX Survey Properties of Hot Subdwarfs in the GALEX Survey

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aspc..452...33n&link_type=abstract

Fifth Meeting on Hot Subdwarf Stars and Related Objects, ASP Conference Series Vol. 452, proceedings of a workshop held at Stell

Astronomy and Astrophysics

Astronomy

Scientific paper

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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