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We present a first entire-sky catalog of isolated galaxies obtained viasystematic automated and visual inspections of extended sources from the TwoMicron All-Sky Survey (2MASS). Based on the Karachentseva's (1973) isolationcriteria, we have extracted a sample of 2100 2MIG galaxies consisting a 4%fraction among galaxies brighter than K = 12m. Being the objects with probablyno major perturbations in some last billion years, the 2MIG galaxies may beconsidered as a reference sample to study environment effects in galaxystructure and evolution. The 2MIG catalog may also be useful to explore theexistence of dark galaxy population within a volume of z=0.02.

The entire-sky catalog of isolated galaxies selected from 2MASS