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It takes a supercluster to raise a galaxy

Published online by Cambridge University Press:  12 October 2016

Heidi Lietzen  and
Maret Einasto
Heidi Lietzen
Affiliation:
Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain Universidad de La Laguna, Dept. Astrofísica, E-38206 La Laguna, Tenerife, Spain email: hlietzen@iac.es
Maret Einasto
Affiliation:
Tartu Observatory, 61602 Tõravere, Estonia
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Abstract

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The properties of galaxies depend on their environment: red, passive elliptical galaxies are usually located in denser environments than blue, star-forming spiral galaxies. This difference in galaxy populations can be detected at all scales from groups of galaxies to superclusters. In this paper, we will discuss the effect of the large-scale environment on galaxies. Our results suggest that galaxies in superclusters are more likely to be passive than galaxies in voids even when they belong to groups with the same richness. In addition, the galaxies in superclusters are also affected by the morphology of the supercluster: filament-type superclusters contain relatively more red, passive galaxies than spider-type superclusters. These results suggest that the evolution of a galaxy is not determined by its local environment alone, but the large-scale environment also affects.

Keywords

Large-scale structure of universegalaxies: statisticsgalaxies: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 412 - 415
Copyright
Copyright © International Astronomical Union 2016 

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