NOAO >   Observing Info >   Approved Programs >   2013B-0046

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Proposal Information for 2013B-0046


PI: Timothy C. Beers, NOAO, beers@noao.edu
Address: NOAO, 950 North Cherry Avenue, Tucson, Arizona 85726, USA

CoI: Vinicius Placco, IAG/NOAO
CoI: Norbert Christlieb, Landessternwarte, Heidelberg
CoI: Silvia Rossi, IAG
CoI: Rafael Santucci, IAG

Title: Missing metal-poor stars from the HK and Hamburg/ESO Surveys

Abstract: We propose to supplement the lists of known very metal-poor ([Fe/H] < -2.0) stars by obtaining follow-up medium-resolution spectroscopy of candidates selected from the HK and Hamburg/ESO prism surveys. We have prepared a list of several thousand candidates, with 10 < B < 18, and available at essentially all RAs in both hemispheres. We plan to use the KPNO 4m telescope to obtain spectra for the candidates in the northern hemisphere, and anticipate observing at least 100 new metal- poor stars in 2013B. These medium-resolution spectra will be used to determine atmospheric parameters (Teff, log g, [Fe/H]), as well as estimates of [C/Fe] and accurate radial velocities, using our well- tested spectroscopic analysis pipeline. This information will enable the identification of many new very metal-poor stars, including representatives of the inner- and outer-halo populations, for which high- resolution spectroscopic can be carried out, in order to determine detailed chemical abundances.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2013B-0046

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