Chemical abundances of giants in globular clusters

Raffaele G. Gratton*, Angela Bragaglia, Eugenio Carretta, Valentina D'Orazi, Sara Lucatello

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

A large fraction of stars form in clusters. According to a widespread paradigma, stellar clusters are prototypes of single stellar populations. According to this concept, they formed on a very short time scale, and all their stars share the same chemical composition. Recently it has been understood that massive stellar clusters (the globular clusters) rather host various stellar populations, characterized by different chemical composition: these stellar populations have also slightly different ages, stars of the second generations being formed from the ejecta of part of those of an earlier one. Furthermore, it is becoming clear that the efficiency of the process is quite low: many more stars formed within this process than currently present in the clusters. This implies that a significant, perhaps even dominant fraction of the ancient population of galaxies formed within the episodes that lead to formation the globular clusters.

Original languageEnglish
Title of host publicationRed giants as probes of the structure and evolution of the Milky Way
EditorsAndrea Miglio, Josefin Montalban, Arlette Noels
Place of PublicationBerlin, Germany
PublisherSpringer, Springer Nature
Pages155-164
Number of pages10
ISBN (Electronic)9783642184185
ISBN (Print)9783642184178
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventWorkshop of the Red Giants as Probes of the Structure and Evolution of the Milky Way - Roma, Italy
Duration: 15 Nov 201017 Nov 2010

Publication series

NameAstrophysics and Space Science Proceedings
PublisherSPRINGER
ISSN (Print)1570-6591

Conference

ConferenceWorkshop of the Red Giants as Probes of the Structure and Evolution of the Milky Way
CountryItaly
CityRoma
Period15/11/1017/11/10

Keywords

  • NA-O ANTICORRELATION
  • HORIZONTAL BRANCHES
  • STAR-CLUSTERS
  • MAIN-SEQUENCE
  • RED GIANTS
  • STELLAR GENERATIONS
  • DYNAMICAL EVOLUTION
  • POPULATION-II
  • MASSIVE STARS
  • TURN-OFF

Cite this

Gratton, R. G., Bragaglia, A., Carretta, E., D'Orazi, V., & Lucatello, S. (2012). Chemical abundances of giants in globular clusters. In A. Miglio, J. Montalban, & A. Noels (Eds.), Red giants as probes of the structure and evolution of the Milky Way (pp. 155-164). (Astrophysics and Space Science Proceedings). Berlin, Germany: Springer, Springer Nature. https://doi.org/10.1007/978-3-642-18418-5_16