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

We present a first entire-sky catalog of isolated galaxies obtained via systematic automated and visual inspections of extended sources from the Two Micron All-Sky Survey (2MASS). Based on the Karachentseva's (1973) isolation criteria, we have extracted a sample of 2100 2MIG galaxies consisting...

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Bibliographic Details
Published in:arXiv.org 2008-07
Main Authors: Mitronova, S N, Karachentsev, I D, Karachentseva, V E, Melnyk, O V
Format: Article
Language:English
Subjects:
Environmental effects
Galactic evolution
Galaxies
Sky surveys (astronomy)
Stars & galaxies
Online Access:Get full text
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Summary:We present a first entire-sky catalog of isolated galaxies obtained via systematic automated and visual inspections of extended sources from the Two Micron All-Sky Survey (2MASS). Based on the Karachentseva's (1973) isolation criteria, we have extracted a sample of 2100 2MIG galaxies consisting a 4% fraction among galaxies brighter than K = 12m. Being the objects with probably no major perturbations in some last billion years, the 2MIG galaxies may be considered as a reference sample to study environment effects in galaxy structure and evolution. The 2MIG catalog may also be useful to explore the existence of dark galaxy population within a volume of z=0.02.
ISSN:2331-8422