Stellar Populations in Spiral Galaxies

Abstract

Color gradients in galaxies reveal information about the nature of their stellar populations via age and metallicity trends, and the amount and distribution of dust in their primary constituents. In this study (see [1]), we use a large catalog of galaxy colors to revisit the comparison of broad-band color gradients with stellar population models using a range of star formation histories (SFH) and basic assumptions about the dust distribution. We follow the approach developed by [2], exploring additional parameter ranges and using an extended data base. Trends in the measured local and global luminosity-weighted age and metallicities and their gradients with galaxy parameters are explored and interpreted in the context of existing models of galaxy formation and evolution.

Keywords

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