Catalog of isolated galaxies selected from the 2MASS survey |
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| Authors: | V E Karachentseva S N Mitronova O V Melnyk I D Karachentsev |
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| Institution: | 1.Main Astronomical Observatory National Academy of Sciences,Kiev,Ukraine;2.Special Astrophysical Observatory,Russian Academy of Sciences,Nizhnij Arkhyz,Russia;3.Institut d’Astrophysique et de Géophysique,Université de Liège,Liège,Belgium;4.Astronomical Observatory,Taras Shevchenko Kiev National University,Kiev,Ukraine |
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| Abstract: | 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 K
s = 12
m
with angular diameters a
K
≥ 30″. 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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| Keywords: | |
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