Discovery of a Rare Group of Dwarf Galaxies in the Local Universe
Sanjaya Paudel, Cristiano G. Sabiu, Suk-Jin Yoon, Pierre-Alain Duc,, Jaewon Yoo, and Oliver M\"uller

TL;DR
This paper reports the discovery of a rare, isolated group of five dwarf galaxies at a nearby distance, providing insights into their properties, interactions, and implications for galaxy formation theories.
Contribution
It is the first detailed study of this unique dwarf galaxy group, revealing their physical characteristics, dynamics, and potential role in understanding large-scale structure formation.
Findings
All galaxies are star-forming, gas-rich, and aligned linearly.
The group has a total dynamical mass of 6.02×10^{10} M_sun.
Three members share a common rotational direction.
Abstract
We report the discovery of a rare isolated group of five dwarf galaxies located at z = 0.0086 ( = 36 Mpc). All member galaxies are star-forming, blue, and gas-rich with indices ranging from 0.2 to 0.6 mag, and two of them show signs of ongoing mutual interaction. The most massive member of the group has a stellar mass that is half of the Small Magellanic Cloud stellar mass, and the median stellar mass of the group members is 7.87 10 M. The derived total dynamical mass of the group is = 6.0210 M, whereas its total baryonic mass (stellar + HI) is 2.610 M, which gives us the dynamical to baryonic mass ratio of 23. Interestingly, all galaxies found in the group are aligned along a straight line in the plane of the sky. The observed spatial extent of the member galaxies is 154 kpc, and their…
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