VIPhotometry of Globular Clusters NGC 6293 and NGC 6541: The Formation of the Metal-poor Inner Halo Globular Clusters
نویسندگان
چکیده
منابع مشابه
Chemical Abundances of Three Metal-poor Globular Clusters (ngc 6287, Ngc 6293, and Ngc 6541) in the Inner Halo
We present a chemical abundance study of three inner old halo clusters NGC 6287, NGC 6293, and NGC 6541, finding [Fe/H] = −2.01 ± 0.05, −1.99 ± 0.02, and −1.76 ± 0.02 (internal), respectively, and our metallicity measurements are in good agreement with previous estimates. We also present the radial velocity measurements of the clusters. Our radial velocity measurements for NGC 6293 and NGC 6541...
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We present V I photometry of the metal-poor inner halo globular clusters NGC 6293 and NGC 6541 using the planetary camera of the WFPC2 on board Hubble Space Telescope (HST). Our color-magnitude diagrams of the clusters show well-defined blue horizontal branch (BHB) populations, consistent with their low metallicities and old ages. NGC 6293 appears to have blue straggler stars in the cluster’s c...
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ژورنال
عنوان ژورنال: The Astronomical Journal
سال: 2006
ISSN: 0004-6256,1538-3881
DOI: 10.1086/507412