Hubble Space Telescope Survey of the Perseus Cluster: II. Photometric scaling relations in different environments
Autor: | Christopher J. Conselice, Sander Valcke, Samantha J. Penny, Enrico V. Held, S. De Rijcke |
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Rok vydání: | 2008 |
Předmět: |
Physics
Perseus Cluster Astrophysics (astro-ph) Local Group FOS: Physical sciences Astronomy and Astrophysics Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Galaxy Space and Planetary Science Hubble space telescope Elliptical galaxy Cluster (physics) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Scaling Astrophysics::Galaxy Astrophysics |
DOI: | 10.48550/arxiv.0811.3198 |
Popis: | We investigate the global photometric scaling relations traced by early-type galaxies in different environments, ranging from dwarf spheroidals, over dwarf elliptical galaxies, up to giant ellipticals (-8 mag > M_V > -24 mag). These results are based in part on our new HST/ACS F555W and F814W imagery of dwarf spheroidal galaxies in the Perseus Cluster. These scaling relations are almost independent of environment, with Local Group and cluster galaxies coinciding in the various diagrams. We show that at M_V ~ -14 mag, the slopes of the photometric scaling relations involving the Sersic parameters change significantly. We argue that these changes in slope reflect the different physical processes that dominate the evolution of early-type galaxies in different mass regimes. As such, these scaling relations contain a wealth of information that can be used to test models for the formation of early-type galaxies. accepted for publication by MNRAS |
Databáze: | OpenAIRE |
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