Astronomy:UKS 2323-326
| UKS 2323-326 | |
|---|---|
| File:Local Group uk.png UKS 2323-326 (not shown) is part of the Local Group, the Sculptor Group to be more specific. | |
| Observation data | |
| Right ascension | 23h 23m 47.6s |
| Declination | −32° 39′ 57″ |
| Distance | 4.2 million ly |
| Characteristics | |
| Type | Dwarf irregular galaxy |
| Number of stars | ~6x10^5 |
| Other designations | |
| MCG-05-55-012, PGC 71431[1] | |
UKS 2323-326 is a very low mass and faint dwarf irregular galaxy located in the Local Group at a distance of 1.3 mpc from Earth.[2] The galaxy is a member of the Sculptor Group.[3] The galaxy has a young stellar population that recently (~100 mya[3]) formed defined red giant branch (RGB) stars but no significant amount of H ll emissions. It also has no detected hot dust or polycyclic aromatic hydrocarbons.[4][5]
Structure and composition
The galaxy shape is amorphous but surprisingly circular. The central region of UKS 2323-326 has a concentration of several tens of bright stars. Farther from the center of the galaxy are fewer bright stars and more faint stars.[3] There are a number of red giant branch (AGB) stars that exist in UKS 2323-326 and a lack of H II regions.[4]
References
- ↑ "UKS 2323-326". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=UKS+2323-326.
- ↑ "UKS 2323-326". https://spider.seds.org/spider/LG/uks2323-326.html.
- ↑ 3.0 3.1 3.2 Lee, Myung Gyoon; Byun, Yong-Ik (1999-08-01). "Stellar Populations of the Dwarf Galaxy UKS 2323-326 in the Sculptor Group". The Astronomical Journal 118 (2): 817–825. doi:10.1086/300989. ISSN 0004-6256. Bibcode: 1999AJ....118..817L. https://ui.adsabs.harvard.edu/abs/1999AJ....118..817L/abstract.
- ↑ 4.0 4.1 Gullieuszik, M.; Greggio, L.; Held, E. V.; Moretti, A.; Arcidiacono, C.; Bagnara, P.; Baruffolo, A.; Diolaiti, E. et al. (2008-05-01). "Resolving stellar populations outside the Local Group: MAD observations of UKS 2323-326" (in en). Astronomy & Astrophysics 483 (1): L5–L8. doi:10.1051/0004-6361:200809631. ISSN 0004-6361. Bibcode: 2008A&A...483L...5G. https://www.aanda.org/articles/aa/abs/2008/19/aa09631-08/aa09631-08.html.
- ↑ Longmore, A. J.; Hawarden, T. G.; Webster, B. L.; Goss, W. M.; Mebold, Ulrich (1978-05-01). "Two new dwarf galaxies in the Local Group: UKS 1927 – 177 and UKS 2323 – 326". Monthly Notices of the Royal Astronomical Society 183 (1): 97P–100P. doi:10.1093/mnras/183.1.97P. ISSN 0035-8711. https://academic.oup.com/mnras/article/183/1/97P/1137254.
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