Near-IR age-dating of red supergiant-dominated stellar populations

Ariane Lançon*, Jay S. Gallagher, Moustapha Mouhcine, Linda J. Smith, Djazia Ladjal, Richard De Grijs

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We present new spectral synthesis models for solar metallicity stellar populations, based on a library of stellar spectra that extends across near-IR wavelengths out to 2.4 μm at a resolution approaching 1000. We show that the spectra of massive star clusters in the starburst galaxy M 82 can be reproduced very well with these models. We compare near-IR spectroscopic ages with optical ages, and dis- cuss the main sources of (systematic) errors that still affect those ages.

Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalAstrophysics and Space Science
Issue number2-4
Publication statusPublished - Nov 2009
Externally publishedYes


  • star clusters
  • starburst galaxies
  • spectral synthesis
  • near-infrared spectra
  • red supergiants


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