A unified construction of stellar evolution and chemical evolution models for the multiple populations in globular clusters

Sohee Jang, Jenny J. Kim, Young Wook Lee

Research output: Contribution to journalArticle

Abstract

Recent investigations of multiple stellar populations in globular clusters (GCs) suggest that the horizontal-branch (HB) morphology and mean period of type ab RR Lyrae variables are mostly sensitive to helium abundance, while the star formation timescale has the greatest effect on our chemical evolution model constructed to reproduce the Na-O anti-correlation of GCs. Therefore, by combining the results from synthetic HB model with those from chemical evolution model, we could put better constraints on star formation history and chemical evolution in GCs with multiple populations. From such efforts made for four GCs, M4, M5, M15, and M80, we find that consistent results can be obtained from these two independent models.

Original languageEnglish
Pages (from-to)302-304
Number of pages3
JournalProceedings of the International Astronomical Union
Volume14
Issue number351
DOIs
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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