Uncertainties in determining the evolutionary status of unresolved old populations
Abstract
Some major uncertainties in the determination of the evolutionary status of unresolved old stellar populations, using stellar population synthesis models, are presented and discussed. It transpires that the unknown HB morphology of the target populations is a major potential source of error, together with the effect of interacting binaries, usually neglected in stellar population synthesis models. A few techniques aimed at revealing the presence in the target populations of a HB morphology different from the SPSM assumptions are discussed.
- Publication:
-
Memorie della Societa Astronomica Italiana
- Pub Date:
- 2015
- Bibcode:
- 2015MmSAI..86..306S
- Keywords:
-
- Stars: Population II;
- Galaxy: globular clusters;
- galaxies: stellar content