Search For Companions Of Nearby Isolated Galaxies
O. V. Melnyk, V. E. Karachentseva, I. D. Karachentsev, D. I. Makarov,, and I. V. Chilingarian
TL;DR
This study measures radial velocities of galaxies near isolated galaxies and finds that most are truly isolated, with a small percentage being cosmic 'orphans' with no significant companions.
Contribution
It provides new radial velocity measurements and confirms the high degree of isolation for most galaxies in the catalog.
Findings
85% of nearby galaxies are well isolated
4% of galaxies with V_LG<3500 km/s are cosmic 'orphans'
Most galaxies in the sample have no significant companions
Abstract
The radial velocities are measured for 45 galaxies located in the neighborhoods of 29 likely isolated galaxies in a new catalog. We find that about 85% of these galaxies actually are well isolated objects. 4% of nearby galaxies with V_LG<3500 km/s are this kind of cosmic "orphan".
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