Finding the First Stars: The Hamburg/ESO Objective Prism Survey
Astrophysics
2009-10-31 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/9911016,
title = {Finding the First Stars: The Hamburg/ESO Objective Prism Survey},
author = {N. Christlieb and D. Reimers and L. Wisotzki and J. Reetz and T. Gehren and T. C. Beers},
journal= {arXiv preprint arXiv:astro-ph/9911016},
year = {2009}
}
Comments
To appear in: Proceedings of ESO/MPA conference "The First Stars". 2 pages, 1 figure