Release 11.12 ("Hergest Ridge")


Gclusters :: Bibliographic item "gc465"

Article ID: gc465
AuthorValcarce, A. A. R.; Catelan, M.; Alonso-García, J.; Cortés, C.; De Medeiros, J. R.
TitleConstraints on Helium Enhancement in the Globular Cluster M4 (NGC 6121): The Horizontal Branch Test
JournalThe Astrophysical Journal, Volume 782, Issue 2, article id. 85, 8 pp.
Year of publication2014 (on gclusters from 2014-10-14 11:00:16 )
AbstractRecent pieces of evidence have revealed that most, and possibly all, globular star clusters are composed of groups of stars that formed in multiple episodes with different chemical compositions (...) In this paper, we test this scenario by using recent photometric and spectroscopic data together with theoretical evolutionary computations for different Y values.
TagsNGC 6121

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