The Environmental Effects on Galaxy Evolution Based on the SDSS Data

Details The Environmental Effects on Galaxy Evolution Based on the SDSS Data The Environmental Effects on Galaxy Evolution Based on the SDSS Data

2003-12-01

arxiv.org/abs/astro-ph/0312042v1

Astronomy and Astrophysics

Astrophysics

5 pages, 11 figures, Carnegie Observatories Astrophysics Series, Vol. 3: Clusters of Galaxies: Probes of Cosmological Structur

Scientific paper

By constructing a large, uniform galaxy cluster catalog from the SDSS data, we have found that cluster galaxies evolve both spectrally and morphologically. By studying the morphology--cluster-centric-radius relation, we have found two characteristic environments where galaxy morphologies change dramatically. We found passive spiral galaxies in the infalling region of clusters. They are likely to be a galaxy population in transition due to the cluster environment. We also studied E+A galaxies, which have also been thought to be cluster originated. We found that E+As live in all environments including the field region.

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