HUBBLE SPACE TELESCOPEREVEALS MULTIPLE SUB-GIANT BRANCH IN EIGHT GLOBULAR CLUSTERS
نویسندگان
چکیده
منابع مشابه
Chemical abundances in the multiple sub-giant branch of 47 Tucanae: insights on its faint sub-giant branch component
The globular cluster 47 Tuc exhibits a complex sub-giant branch (SGB) with a faint-SGB comprising only about the 10% of the cluster mass and a bright-SGB hosting at least two distinct populations. We present a spectroscopic analysis of 62 SGB stars including 21 faint-SGB stars. We thus provide the first chemical analysis of the intriguing faint-SGB population and compare its abundances with tho...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2012
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/760/1/39