Properties of 513 isolated galaxies in the Local Supercluster
I. D. Karachentsev, D. I. Makarov, V. E. Karachentseva, O. V. Melnyk
TL;DR
This paper presents a comprehensive catalog of 513 highly isolated nearby galaxies within the Local Supercluster, analyzing their optical and HI properties to understand their unique characteristics and the role of isolation in galaxy evolution.
Contribution
It introduces the first all-sky catalog of isolated galaxies with specific isolation criteria, focusing on their optical and HI properties within the local universe.
Findings
Isolated galaxies constitute about 4% of local galaxies.
The catalog provides detailed optical and HI data for these galaxies.
Isolation significantly influences galaxy properties and evolution.
Abstract
We introduce the first entire-sky catalog of the most isolated nearby galaxies with radial velocities VLG<3500 km/s. This kind of cosmic "orphans" amounts to 4% among all known galaxies within the same velocity range. We describe a criterion of isolation applied to select our sample, the "Local Orphan Galaxies", and discuss their basic optical and HI properties.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Galaxies: Formation, Evolution, Phenomena · Stellar, planetary, and galactic studies