Search for dwarf galaxies in the southwestern sector of the Local cosmic void
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912381912743936 |
|---|---|
| author | Popova, A. A. Karachentsev, I. D. |
| author_facet | Popova, A. A. Karachentsev, I. D. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_11120 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for dwarf galaxies in the southwestern sector of the Local cosmic void Popova, A. A. Karachentsev, I. D. Astrophysics of Galaxies 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. |
| title | Search for dwarf galaxies in the southwestern sector of the Local cosmic void |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2505.11120 |