Stellar Archaeology : a Keck Pilot Program on Extremely Metal-Poor Stars From the Hamburg / ESO Survey . I Stellar Parameters

Content Provider	Semantic Scholar
Author	Cohen, Judith G. Christlieb, Norbert Beers, Timothy C. Gratton, Raffaele G. Carretta, Eugenio
Copyright Year	2002
Abstract	In this series of two papers we present a high dispersion spectroscopic analysis of 8 candidate extremely metal poor stars selected from the Hamburg/ESO Survey and of 6 additional very metal poor stars. We demonstrate that with suitable vetting using moderate-resolution spectra the yield of this survey for stars with [Fe/H] ≤ −3.0 dex is very high; three out of the eight stars observed thus far at high resolution from the HES are actually that metal poor, three more have [Fe/H] ≤ −2.8 dex, and the remainder are only slightly more metal rich. In preparation for a large scale effort to mine the Hamburg/ESO Survey database for such stars about to get underway, we lay out in this paper the basic principles we intend to use to determine in a uniform way the stellar parameters Teff, log(g), and reddening. Subject headings: Galaxy: halo — stars: abundances — Galaxy, evolution
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/astro-ph/0204082v1.pdf
Language	English
Access Restriction	Open
Subject Keyword	ABRA gene Archaeology Dex Eragrostis Field electron emission Galaxy Hetastarch Hypertext Editing System Image resolution Iron Paper Stars, Celestial Stellar (payment network) Stellar classification
Content Type	Text
Resource Type	Article