Deriving star formation histories: Evolutionary or population synthesis codes versus color-magnitude diagrams

Danielle Alloin, Carme Gallart, Emmanuel Fleurence, Emanuela Pompei, Daniel Raimann, Uta Fritze-Von Alvensleben, Sukyoung Yi

Research output: Contribution to journalArticle

3 Citations (Scopus)


The goal of this project is to analyze the integrated-light spectrum of a region in the LMC bar, for which HST images are already available yielding color-magnitude diagrams reaching the oldest main-sequence turnoff. Then, we can derive the star formation history in this field through evolutionary/population synthesis of the integrated light from 330 to 990 nm by a variety of independent methods and compare the results with the - in principle - more reliable results derived from the analysis of the color-magnitude diagram (CMD). This confrontation is the key 'truth-test' needed for the understanding of the abilities and the limitations of the evolutionary/population synthesis methods that must be applied of necessity to unresolved nearby and far-away galaxies. We report here on the observational part of the project.

Original languageEnglish
Pages (from-to)109-113
Number of pages5
JournalAstrophysics and Space Science
Issue number1-2
Publication statusPublished - 2002 Dec 1


All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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