Subdwarf B Binaries from the SPY Project

C. Karl, U. Heber, R. Napiwotzki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT (ESO - SN Ia progenitor survey - SPY), several sdB binaries were discovered. We report on the analysis of six radial velocity variable sdB stars from the SPY project. Radial velocity curves have been measured. Effective temperatures, surface gravities and helium abundances are determined, as well as metal abundances. We highlight some strong abundance anomalies.
Original languageEnglish
Title of host publicationIn: Procs of the 14th European Workshop on White Dwarfs - ASP Conference Series 334
PublisherAstronomical Society of the Pacific
Pages369-374
ISBN (Print)1-58381-197-4, 978-1-58381-268-6
Publication statusPublished - 2005

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