Rendez-vous of dwarfs
R.I. Uklein, D.I. Makarov, S. Roychowdhury
TL;DR
This paper reports optical and radio observations of a filamentary group of five dwarf galaxies, revealing signs of ongoing interaction and possible formation, with detailed spectral analysis of peculiar structures.
Contribution
It provides new observational data on a group of dwarf galaxies, highlighting interaction signs and early formation stages not previously documented.
Findings
Detection of peculiar structures in two faint dwarf galaxies
Inner motions of about 150 km/s indicating interaction
Possible early stage of group formation
Abstract
We present observations of multiple system of dwarf galaxies at the Russian 6-m telescope and the GMRT (Giant Metrewave Radio Telescope). The optical observations are a part of the programme Study of Groups of Dwarf Galaxies in the Local Supercluster. The group of galaxies under consideration looks like filament of 5 dwarfs. Two faint galaxies show peculiar structure. Long slit spectrum reveals inner motions about 150 km/s in one of them. It suggests that the galaxy is on stage of ongoing interaction. Probably, we see the group in moment of its formation.
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