Spectroscopic evidence of Multiple Stellar Populations in Globular Clusters

Abstract

Galactic globular clusters are not simple stellar populations. And nothing is simple in their study, basically because we try to reconstruct chains of events that occurred at redshift z > 2-3 by observing these objects at z=0, after a Hubble time. Fortunately, spectroscopy offers a magnifying lens: differences of tens or hundreds of Myrs between stellar generations are translated into differences in abundances up to a full dex. I will review the complex pattern emerging by the combined efforts of different groups, focusing on the chemical signatures of multiple populations in globular clusters.

Invited review talk given on August, 10 2016 at the Conference "Star Clusters: From Infancy to Teenagehood", Heidelberg; 23 pages, 19 figures

Cited by in corpus (5)

• What is a globular cluster? An observational perspective
• Atypical Mg-poor Milky Way field stars with globular cluster second-generation like chemical patterns
• The Globular Cluster Origin of the Milky Way Outer Bulge: Evidence from Sodium Bimodality
• Evidence of globular cluster abundance anomalies in the SMC intermediate-age cluster Kron 3
• Determination of Sodium Abundance Ratio from Low-Resolution Stellar Spectra and Its Applications