The C+N+O abundances and the splitting of the subgiant branch in the globular cluster NGC 1851
Among the newly discovered features of multiple stellar populations in globular clusters (GCs), the cluster NGC 1851 harbours a double subgiant branch (SGB), that can be explained in terms of two stellar generations, only slightly differing in age, the younger one having an increased total C+N+O abundance. Thanks to this difference in the chemistry, a fit can be made to the SGBes, roughly consistent with the C+N+O abundance variations already discovered two decades ago, and confirmed by recent...[Show more]
|Collections||ANU Research Publications|
|Source:||Monthly Notices of the Royal Astronomical Society|
|01_Ventura_The_C+N+O_abundances_and_the_2009.pdf||1.89 MB||Adobe PDF||Request a copy|
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