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Seven new carbon-enhanced metal-poor RR Lyrae stars

Kennedy, Catherine; Stancliffe, Richard; Kuehn, Charles; Beers, Timothy C; Kinman, T; Placco, Vinicius M; Reggiani, Henrique; Rossi, Silvia; Lee, Y S


We report estimated carbon-abundance ratios, [C/Fe], for seven newly discovered carbon-enhanced metal-poor (CEMP) RR Lyrae stars. These are well-studied RRab stars that had previously been selected as CEMP candidates based on low-resolution spectra. For this pilot study, we observed eight of these CEMP RR Lyrae candidates with the Wide Field Spectrograph on the ANU 2.3 m telescope. Prior to this study, only two CEMP RR Lyrae stars had been discovered: TY Gru and SDSS J1707+58. We compare our...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1088/0004-637X/787/1/6


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