Mass dependent Evolution of Field Early-Type Galaxies Since z=1
Abstract
We present the Fundamental Plane (FP) of field early-type galaxies at 0.5 < z < 1.0. Our project is a continuation of our efforts to understand the formation and evolution of early-type galaxies in different environments. The target galaxies were selected from the comprehensive and homogeneous data set of the Gemini/HST Galaxy Cluster Project. The distant field early-type galaxies follow a steeper FP relation compared to the local FP. The change in the slope of the FP can be interpreted as a mass-dependent evolution. Similar results have been found for cluster early-type galaxies in high redshift galaxy clusters at 0.8 < z <1. Therefore, the slope change of the FP appears to be independent of the environment of the galaxies.
- Publication:
-
Stellar Populations - Planning for the Next Decade
- Pub Date:
- April 2010
- DOI:
- 10.1017/S174392131000311X
- arXiv:
- arXiv:1002.2205
- Bibcode:
- 2010IAUS..262..335F
- Keywords:
-
- cosmology: observations – galaxies: evolution – galaxies: structure – galaxies: elliptical and lenticular;
- cD – galaxies: fundamental parameters – galaxies: stellar content;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 2 pages, 1 figure, to appear in the proceedings of the IAU Symposium no. 262, "Stellar Populations - Planning for the Next Decade", eds. G. R. Bruzual and S. Charlot