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arXiv · 2505.11120

Search for dwarf galaxies in the southwestern sector of the Local cosmic void

A. A. Popova·I. D. Karachentsev
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Abstract

We performed a search for new dwarf galaxies in a direction towards the southwestern part of the Local Void using the data on DESI Legacy Imaging Surveys. In a sky area of $\sim1000$ square degrees, we discovered 12 candidates to nearby dwarfs with a high confidence. Four of them are probable new companions to the nearby galaxy M 83 and others are isolated objects. We found also 20 nearby dwarf candidates with a low confidence. Almost all of the detected galaxies are classified as late type dwarfs. A new cluster of bluish stars with an angular diameter of 0.9$^{\prime}$ is revealed by us at a high galactic latitude, $b = -29^{\circ}$. Being at a distance of $\sim70$ kpc, it can be a globular cluster associated with the Milky Way stellar stream Sagittarius dSph or a new ultra-faint satellite of the Milky Way.

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A. A. Popova, I. D. Karachentsev. 2025-05-16. Search for dwarf galaxies in the southwestern sector of the Local cosmic void. https://arxiv.org/abs/2505.11120

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