Metallicity distribution of ω Cen Red Giants based on the Strömgren m1 metallicity index

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DOIResolve DOI: http://doi.org/10.1017/S1743921307007958
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleStellar Populations as Building Blocks of Galaxies
Series titleProceedings of the International Astronomical Union; Volume 2
ConferenceIAU Symposium 241 Stellar Populations as Building Blocks of Galaxies, December 10-16, 2006, Canary Islands, Spain
ISSN1743-9213
1743-9221
Pages223226; # of pages: 4
Subjectglobular clusters; general — globular clusters
AbstractWe adopted uvby Strömgren photometry to investigate the metallicity distribution of ω Cen Red Giant (RG) stars. We provided a new empirical calibration of the Str¨omgren m1 ≡ (v−b)−(b−y) metallicity index based on cluster stars. The new calibration has been applied to a sample of ω Cen RGs. The shape of the estimated metallicity distribution is clearly asymmetric, with a sharp cut-off at low metallicities ([F e/H] < −2.0) and a metal-rich tail up to [F e/H] ∼ 0.0. Two main metallicity peaks have been identified, around [F e/H] ≈ −1.9 and −1.3 dex, and a metal-rich shoulder at ≈ −0.2 dex.
Publication date
PublisherInternational Astronomical Union
LanguageEnglish
AffiliationNRC Herzberg Institute of Astrophysics; National Research Council Canada
Peer reviewedYes
NPARC number13054087
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Record identifier064af867-12d1-4db7-8d0c-0b5c886a71b9
Record created2009-11-25
Record modified2017-06-27
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