Environments of Low-Redshift Merging Galaxies

Details Environments of Low-Redshift Merging Galaxies Environments of Low-Redshift Merging Galaxies

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.9701i&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #97.01; Bulletin of the American Astronomical Society, V

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Scientific paper

Merging galaxies are believed to be an integral component of galaxy evolution. Gaining insight about their environments may lead to a better understanding of their role. We identify a sample of over 350 low-redshift (z ≤ .05) mergers collected from SDSS by visually inspecting close pairs of galaxies for tidal features or other signs of interaction. To analyze the environment of the mergers, we determine the distance to the nearest large group of galaxies and the number of galaxies in that group. We find that mergers are more likely to occur closer to the center of a group, but have not detected a dependence on the size of the group. We are comparing our data with theoretical CDM simulations of structure formation.

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