The role of binary stars in stellar population synthesis

Details The role of binary stars in stellar population synthesis The role of binary stars in stellar population synthesis

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..252..359l&link_type=abstract

The Art of Modeling Stars in the 21st Century, Proceedings of the International Astronomical Union, IAU Symposium, Volume 252, p

Astronomy and Astrophysics

Astronomy

Galaxies: Stellar Content, Galaxies: Evolution, Galaxies: Formation

Scientific paper

More than about 50% stars are in binaries, but the effects of binary evolution were not taken into account in most previous stellar population synthesis studies. In fact, binaries can affect the integrated peculiarities such as spectral energy distributions (SEDs), colours, and line-strength indices of populations. With the effects of binary stars taken into account, some new results for stellar population studies will be shown. We discuss how binaries affect the colours and Lick indices of simple stellar populations, and the measurement of stellar ages and metallicities.

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