We give a progress report about the activities within the CIFIST Team related to the search for extremely metal-poor stars in the Sloan Digital Sky Survey's spectroscopic catalog. So far the search has provided 25 candidates with metallicities around or smaller -3. For 15 candidates high resolution spectroscopy with UVES at the VLT has confirmed their extremely metal-poor status. Work is under way to extend the search to the SDSS's photometric catalog by augmenting the SDSS photometry, and by gauging the capabilities of X-shooter when going to significantly fainter targets.
Cite
@article{arxiv.0809.2948,
title = {Extremely metal-poor stars from the SDSS},
author = {H. -G. Ludwig and P. Bonifacio and E. Caffau and N. T. Behara and J. I. Gonzalez Hernandez and L. Sbordone},
journal= {arXiv preprint arXiv:0809.2948},
year = {2009}
}
Comments
6 pages, 6 figures, Proceedings paper of the conference "A stellar journey: A symposium in celebration of Bengt Gustafsson's 65th birthday"