The evolution of elliptical galaxies, from dwarfs to giants
Astronomy and astrophysics
Friday 28 March 2014
to 11:30 at
Denija Crnojevic (Texas Tech)
I will present the first truly global view of the closest elliptical galaxies, the dwarf elliptical (dE) companions of M31 and the giant elliptical (E) Centaurus A. I exploit wide-field surveys of their resolved stellar populations, undertaken using a variety of ground-based observations (MegaCam/CFHT, VIMOS/VLT, Megacam/Magellan), in order to investigate their past formation history. The properties of the dE and E's stellar populations (ages, metallicities, spatial structures, gradients) are crucial to constrain environmental effects that act on the evolution of these galaxies, their past interaction/accretion events and thus ultimately our understanding of a hierarchically growing Universe. I will discuss my results in the context of galaxy formation models for the buildup of dE and E.