RED GIANT BRANCH BUMP BRIGHTNESS AND NUMBER COUNTS IN 72 GALACTIC GLOBULAR CLUSTERS OBSERVED WITH THEHUBBLE SPACE TELESCOPE
نویسندگان
چکیده
منابع مشابه
Comparison between observed and theoretical Red Giant Branch luminosity functions of galactic globular clusters
V -band luminosity functions (LF) have been obtained for the upper main-sequence (MS), sub-giant branch (SGB) and red giant branch (RGB) of 18 galactic globular clusters (GGC) from HST data. A comparison with four sets of theoretical models has been performed. In contrast with what was found in several previous works, a good general agreement has been found between the observed and theoretical ...
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We present observational estimates of the magnitude difference between the luminosity function red giant branch bump and the horizontal branch (∆F555W HB ), and of star counts in the bump region (Rbump), for a sample of 54 Galactic globular clusters observed by the HST. The large sample of stars resolved in each cluster, and the high photometric accuracy of the data allowed us to detect the bum...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2013
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/766/2/77