Catalog of Isolated Galaxies Selected from the 2MASS Survey

Details Catalog of Isolated Galaxies Selected from the 2MASS Survey Catalog of Isolated Galaxies Selected from the 2MASS Survey

2010-05-18

arxiv.org/abs/1005.3191v1

Astrophysical Bulletin, 2010, Volume 65, Issue 1, pp.1-17

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

19 pages, 13 figures

Scientific paper

10.1134/S1990341310010013

We search for isolated galaxies based on the automatic identification of isolated sources from the Two Micron All-Sky Survey (2MASS) followed by a visual inspection of their surroundings. We use the modified Karachentseva criterion to compile a catalog of 3227 isolated galaxies (2MIG), which contains 6% of 2MASS Extended Sources Catalog (or 2MASX) sources brighter than Ks = 12 mag with angular diameters a_K > 30 arcsec. The catalog covers the entire sky and has an effective depth of z = 0.02. The 2493 very isolated objects of the catalog, which we include into the 2MVIG catalog, can be used as a reference sample to investigate the effects of the environment on the structure and evolution of galaxies located in regions with extremely low density of matter.

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