Excursions into the Evolution of Early-Type Galaxies in Clusters

Details Excursions into the Evolution of Early-Type Galaxies in Clusters Excursions into the Evolution of Early-Type Galaxies in Clusters

2002-05-30

arxiv.org/abs/astro-ph/0205518v1

Astronomy and Astrophysics

Astrophysics

10 pages, 2 figures, to appear in the proccedings of "New Quests in Stellar Astrophysics: The Link Between Stars and Cosmology

Scientific paper

Recent observations have revealed that early-type galaxies (ETG) in clusters comprise an old galaxy population that is evolving passively. We review some recent observations from the ground and from HST that show that ETG have undergone a significant amount of luminosity evolution. This evolution is traced by two projections of the fundamental plane (FP): the size-magnitude relation (SMR) and the color-magnitude relation (CMR). We will briefly discuss the relevance of all these results in the context of the universality of the IMF.

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