Near-IR age-dating of red supergiant-dominated stellar populations
Lancon, Ariane × Gallagher, Jay S Mouhcine, Moustapha Smith, Linda J Ladjal, Djazia de Grijs, Richard #
Astrophysics and space science vol:324 issue:2-4 pages:241-245
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 A mu m 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 discuss the main sources of (systematic) errors that still affect those ages.