NOAO >   Observing Info >   Approved Programs >   2014B-0231

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Proposal Information for 2014B-0231


PI: Timothy Beers, NOAO, beers@noao.edu
Address: Astronomy Department, 950 N. Cherry Ave., Tucson, AZ 85719, USA

CoI: Vinicius Placco, GEMINI
CoI: Young Sun Lee, NMSU
CoI: Daniella Carollo, MacQuarie University
CoI: Verne Smith, NOAO/NSSC
CoI: Sean Points, NOAO/CTIO

Title: Identifying Bright CEMP Stars in the RAVE Catalog

Abstract: We propose to determine carbon abundance ratios, [C/Fe], for a sample of previously identified \it bright very metal-poor stars, by obtaining follow-up medium-resolution spectroscopy of candidates selected from the RAVE (RAdial Velocity Experiment) final data release. We have prepared a list of several hundred candidates, with 8 < B < 12, 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 DEC >-10^\rm o range, and the SOAR telescope for the southern candidates. We hope to observe a combined sample of at least 250 metal- poor stars in 2014B. These medium-resolution spectra will be used to confirm the available atmospheric parameters from RAVE, as well as to determine [C/Fe] and [(alpha)/Fe], using our spectroscopic analysis pipeline. This information will enable the identification of many new carbon-enhanced metal-poor (CEMP) stars, including representatives of the inner- and outer-halo populations, for which high-resolution spectroscopy can be carried out from the ground, and for the brightest stars (B < 11), with HST STIS or COS.


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



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