2010/10/07 by Dmitry Makarov, D. Makarov, I. Karachentsev +3 · 3 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Dwarf galaxy #Electrical and Electromagnetic Research #Galaxies: Formation, Evolution, Phenomena #Galaxy #Local Group #Population #Supercluster (genetic) #Velocity dispersion #astro-ph.CO
paper · pdf · doi:10.1051/eas/1148066
published in EAS Publications Series 48, 289-294 (EDP Sciences) · 6 pages, 4 figures; the proceedings of the conference "A Universe of dwarf galaxies" (Lyon, June 14-18, 2010)
arxiv created 2010/10/07 · openalex publication_date 2011/01/01 · arxiv updated 2015/05/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a project on study of groups composed of dwarf galaxies only. We selected such structures using HyperLEDA and NED databases with visual inspection on SDSS images and on digital copy of POSS. The groups are characterized by size of few tens of kpc and line-of-sight velocity dispersion about 18 km s−1. Our groups similar to associations of nearby dwarfs from Tully et al. (2006). This specific population of multiple dwarf galaxies such as I Zw 18 may contain significant amount of dark matter. It is very likely that we see them at the stage just before merging of its components.