M 81 group dSphs : metallicity distribution functions and gradients

Lianou, S. and Grebel, E.K. and Koch, Andreas (2011) M 81 group dSphs : metallicity distribution functions and gradients. EAS Publications Series, 48. pp. 91-92. ISSN 1633-4760

Abstract

We summarize our results on the photometric metallicities and on the presence of metallicity gradients for nine M 81 group dSphs. The majority of our studied dSphs contains a significant fraction of intermediate–age stellar populations, which we consider as a function of the deprojected distance from the dominant galaxy of the group.