Spectroscopic Validation of Low-Metallicity Stars from RAVE

We present results from a medium-resolution (R ~ 2, 000) spectroscopic follow-up campaign of 1,694 bright (V < 13.5), very metal-poor star candidates from the RAdial Velocity Experiment (RAVE). Initial selection of the low-metallicity targets was based on the stellar parameters published in RAVE...

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Bibliographic Details
Published in:arXiv.org 2018-05
Main Authors: Placco, Vinicius M, Beers, Timothy C, Santucci, Rafael M, Chaname, Julio, Maria Paz Sepulveda, Coronado, Johanna, Points, Sean D, Kaleida, Catherine C, Rossi, Silvia, Kordopatis, Georges, Young Sun Lee, Matijevic, Gal, Frebel, Anna, Hansen, Terese T, Holmbeck, Erika M, Rasmussen, Kaitlin C, Roederer, Ian U, Sakari, Charli M, Whitten, Devin D
Format: Article
Language:English
Subjects:
Abundance
Carbon
European Southern Observatory
Inspection
Metallicity
Organic chemistry
Radial velocity
Spectrum analysis
Stars
Telescopes
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Summary:We present results from a medium-resolution (R ~ 2, 000) spectroscopic follow-up campaign of 1,694 bright (V < 13.5), very metal-poor star candidates from the RAdial Velocity Experiment (RAVE). Initial selection of the low-metallicity targets was based on the stellar parameters published in RAVE Data Releases 4 and 5. Follow-up was accomplished with the Gemini-N and Gemini-S, the ESO/NTT, the KPNO/Mayall, and the SOAR telescopes. The wavelength coverage for most of the observed spectra allows for the determination of carbon and {\alpha}-element abundances, which are crucial for con- sidering the nature and frequency of the carbon-enhanced metal-poor (CEMP) stars in this sample. We find that 88% of the observed stars have [Fe/H]
ISSN:2331-8422
DOI:10.48550/arxiv.1805.00608