2005/04/11 by R. R. de Carvalho, T. S. Gonçalves, T. S. Goncalves +4 · 1 citation
Physics and Astronomy · #Angular diameter #Astronomy and Astrophysical Research #Electrical and Electromagnetic Research #Galaxies: Formation, Evolution, Phenomena #Galaxy #Observatory #Redshift #Scale (ratio) #Sky #Universe #Virtual observatory #astro-ph
paper · pdf · doi:10.1086/430801
published as Astron.J.130:425-444,2005 · accepted to AJ
arxiv created 2005/04/11 · openalex publication_date 2005/07/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 deg 2 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.