Reference : Catalog of nearby isolated galaxies in the volume z < 0.01
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Catalog of nearby isolated galaxies in the volume z < 0.01
Karachentsev, I. D. [Special Astrophysical Observatory, Russian Academy of Sciences]
Makarov, D. I. [Special Astrophysical Observatory, Russian Academy of Sciences]
Karachentseva, V. E. [Main Astronomical Observatory, National Academy of Sciences]
Melnyk, Olga mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)]
Astrophysical Bulletin
Yes (verified by ORBi)
[en] astronomical databases ; catalogs-galaxies ; general-galaxies ; evolution-galaxies ; formation
[en] We present a catalog of 520 most isolated nearby galaxies with angular velocities V_LG < 3500 km/s, covering the entire sky. This population of "space orphans" makes up 4.8% among 10 900 galaxies with measured radial velocities. We describe the isolation criterion used to select our sample, called the "Local Orphan Galaxies"(LOG), and discuss their basic optical and HI properties. A half of the LOG catalog is occupied by the Sdm, Im and Ir morphological type galaxies without a bulge. The median ratio Mgas/ Mstar in the LOG galaxies exceeds 1. The distribution of the catalog galaxies on the sky looks uniform with some signatures of a weak clustering on the scale of about 0.5 Mpc. The LOG galaxies are located in the regions where the mean local density of matter is approximately 50 times lower than the mean global density. We indicate a number of LOG galaxies with distorted structures, which may be the consequence of interaction of isolated galaxies with massive dark objects.
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