Finding the First Stars: The Hamburg/ESO Objective Prism Survey

Details Finding the First Stars: The Hamburg/ESO Objective Prism Survey Finding the First Stars: The Hamburg/ESO Objective Prism Survey

1999-11-02

arxiv.org/abs/astro-ph/9911016v1

Astronomy and Astrophysics

Astrophysics

To appear in: Proceedings of ESO/MPA conference "The First Stars". 2 pages, 1 figure

Scientific paper

10.1007/10719504_6

We report on a search for extremely metal-poor ([Fe/H]<-3.0) turnoff stars in the Hamburg/ESO objective prism survey (HES). Metal-poor stars are selected by automatic spectral classification. Extensive simulations show that the selection efficiency for turnoff stars of [Fe/H]<-3.0 is >25% at B<16.5. Since the HES is more than 1 mag deeper than the HK survey of Beers et al. (1992), the HES offers the possibility to efficiently increase the total number of metal-poor stars by at least a factor of 4.

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