A Catalog of Distant Compact Groups Using DPOSS

Details A Catalog of Distant Compact Groups Using DPOSS A Catalog of Distant Compact Groups Using DPOSS

2005-04-11

arxiv.org/abs/astro-ph/0504217v1

Astron.J.130:425-444,2005

Astronomy and Astrophysics

Astrophysics

accepted to AJ

Scientific paper

10.1086/430801

In this paper we present an objectively defined catalog of 459 small, high density groups of galaxies out to z~0.2 in a region of 6260 square degrees in the northern sky derived from the Digitized Second Palomar Observatory Sky Survey. Our catalog extends down to r = 19.0 and has a median redshift of z_med = 0.12, making it complementary to Hickson's catalog for the nearby universe (z_med = 0.03). The depth and angular coverage of this catalog makes it valuable for studies of the general characteristics of small groups of galaxies and how galaxies evolve in and around them. We also examine the relationship between compact groups and large scale structure.

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