Bibcode
Milone, A. P.
Referencia bibliográfica
American Astronomical Society, AAS Meeting #220, #302.02
Advertised on:
5
2012
Número de citas
0
Número de citas referidas
0
Descripción
An increasing number of observations over the last years have shown the
existence of distinct sub-populations in many (maybe all) globular
clusters and shattered the paradigm of globulars hosting single, simple
stellar populations. These multiple populations manifest themselves in a
split of different evolutionary sequences in the cluster color-magnitude
diagrams.
Using filters covering an appropriate range of wavelengths, photometry
splits the main sequence into two or more branches, and in many cases
this bimodality is repeated in the subgiant and red giant regions, and
on the horizontal branch.
In this talk I will summarize the main results from photometric studies.