Stellar Populations of the Most Massive Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galaxies: Evolution, Galaxies: Structure –Galaxies: Elliptical And Lenticular, Cd

Scientific paper

Within the hierarchical CDM framework, gas-poor mergers contribute substantially to the building of the most massive galaxies (Faber et al. 2007). We want to test this scenario by studying the fundamental plane (FP) and the stellar populations of the most massive galaxies. We investigate a well-defined sample of massive early-type galaxies at 0.1350 km s-1. These systems are located either in high or low-density environments and show a variety of small surface-brightness structure. Using archival HST/ACS images and Gemini/GMOS spectroscopy, we will explore the photometric and spectroscopic properties of these galaxies.

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