The metal abundances of RR Lyrae stars in the globular clusters NGC 3201, NGC 4590, and NGC 6171

Details The metal abundances of RR Lyrae stars in the globular clusters NGC 3201, NGC 4590, and NGC 6171 The metal abundances of RR Lyrae stars in the globular clusters NGC 3201, NGC 4590, and NGC 6171

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88..982s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, July 1983, p. 982-984.

Astronomy and Astrophysics

Astronomy

16

Blue Stars, Cepheid Variables, Globular Clusters, Metallicity, Stellar Spectra, Variable Stars, Iron, K Lines, Spectral Line Width

Scientific paper

The ΔS metal abundance index has been measured for RR Lyrae stars in the globular cluster NGC 3201, NGC 4590, and NGC 6171. The abundance of NGC 3201 was found to be [Fe/H] = - 1.33 ± 0.15 on Butler's scale, with no evidence of star-to-star variation among nine stars studied. The results for NGC 4590 and NGC 6171 (two stars each) were [Fe II] = - 1.96 and - 0.84, respectively. The result for NGC 6171 is in good agreement with previous ΔS determinations.

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