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Stellar Populations of the Most Massive Galaxies

Published online by Cambridge University Press:  03 June 2010

Alexander Fritz ,
Michael D. Hoenig  and
Ricardo P. Schiavon
Alexander Fritz
Affiliation:
Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA Email: [email protected]
Michael D. Hoenig
Affiliation:
Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA Email: [email protected]
Ricardo P. Schiavon
Affiliation:
Gemini Observatory, 670 N. A'ohoku Place, Hilo, HI 96720, USA Email: [email protected]
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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 0.1<z<0.4, identified from the SDSS database. Out of 42,000 possible targets in the SDSS database, we extracted 23 luminous early-type galaxies with bona fide high velocity dispersions of σ>350 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.

Keywords

galaxies: evolutiongalaxies: structure –galaxies: elliptical and lenticularcD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S267: Co-Evolution of Central Black Holes and Galaxies , August 2009 , pp. 459
Copyright
Copyright © International Astronomical Union 2010

References

Bernardi, M., et al. 2008, MNRAS, 391, 1191CrossRefGoogle Scholar
Faber, S., et al. 2007, ApJ, 665, 265CrossRefGoogle Scholar