Release 11.12 ("Hergest Ridge")


Gclusters :: Bibliographic item "gc491"

Article ID: gc491
AuthorDalessandro, E.; Salaris, M.; Ferraro, F. R.; Mucciarelli, A.; Cassisi, S.
TitleThe horizontal branch in the UV colour-magnitude diagrams - II. The case of M3, M13 and M79
JournalMNRAS, Volume 430, Issue 1, p.459-471
Year of publication2013 (on gclusters from 2015-11-20 10:41:11 )
AbstractWe present a detailed comparison between far-ultraviolet (UV)/optical colour-magnitude diagrams obtained with high-resolution Hubble Space Telescope data and suitable theoretical models for three Galactic globular clusters: M3, M13 and M79. These systems represents a `classical' example of clusters in the intermediate-metallicity regime that, even sharing similar metal content and age, show remarkably different horizontal branch morphologies. As a consequence, the observed differences in the colour distributions of horizontal branch stars cannot be interpreted in terms of either first (metallicity) or a second parameter such as age...
TagsNGC 6205 , NGC 5272 , NGC 1904

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