PGC 29820 (known as JO204) is a spiral galaxy located 600 million light-years away from the Solar System in the Sextans constellation.[1] The galaxy is about 120,000 light-years in diameter and is a member of Abell 957, a low-mass galaxy cluster.[2] The first known reference to this galaxy is from volume I of the Catalogue of Galaxies and of Clusters of Galaxies compiled by Fritz Zwicky in 1961, where it was listed as CGCG 008-077.[3]
| PGC 29820 | |
|---|---|
 PGC 29820 imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Sextans |
| Right ascension | 10h 13m 46.82s |
| Declination | -00d 54m 51.0s |
| Redshift | 0.04244 |
| Heliocentric radial velocity | 12,723 km/s |
| Distance | 600 Mly (183.96 Mpc) |
| Group or cluster | Abell 957 |
| Apparent magnitude (V) | 0.11 |
| Apparent magnitude (B) | 0.15 |
| Characteristics | |
| Type | Sb(f), Seyfert 2 |
| Size | 120,000 ly |
| Other designations | |
| LEDA 29820, CGCG 008-077, 2dFGRS N288Z210, AGC 500048, NVSS J101346-005449, JO204 | |
Characteristics
editPGC 29820 is classified a massive galaxy with a stellar mass of M* = 4 x1010 M.[4] It contains an active galactic nucleus with double-peaked narrow lines.[5][6] Moreover, it is also a Seyfert 2 galaxy.[7]
PGC 29820 is classified a jellyfish galaxy.[8][9][10] According to Gullieuszik, the galaxy is currently in a first phrase of infalling into the cluster where it is subjected to ram pressure by the intracluster medium.[2]
Because dense gas is compressed, it eventually collapses to form new stars in both the galaxy's tail and its disk.[4] According to researchers, the stars inside the tail, has a star formation rate of 0.22 M○ yr1[11] which began during the last 500 million years.[2]
In additional, PGC 29820 shows a large presence of molecular gas making up H2 mass of 8.3 x 109 M○. Looking at ratio of total molecular hydrogen mass and stellar mass, it is estimated as 0.42.[12]
See also
editReferences
edit- ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-18.
- ^ a b c Gullieuszik, Marco; Poggianti, Bianca M.; Moretti, Alessia; Fritz, Jacopo; Jaffé, Yara L.; Hau, George; Bischko, Jan C.; Bellhouse, Callum; Bettoni, Daniela; Fasano, Giovanni; Vulcani, Benedetta; D'Onofrio, Mauro; Biviano, Andrea (2017-09-01). "GASP. IV. A Muse View of Extreme Ram-pressure-stripping in the Plane of the Sky: The Case of Jellyfish Galaxy JO204". The Astrophysical Journal. 846 (1): 27. arXiv:1708.09035. Bibcode:2017ApJ...846...27G. doi:10.3847/1538-4357/aa8322. ISSN 0004-637X.
- ^ Zwicky, F.; Herzog, E.; Wild, P. (1961). Catalogue of galaxies and of clusters of galaxies, Vol. I. p. 26. Bibcode:1961cgcg.book.....Z. Archived from the original on August 19, 2023.
- ^ a b Deb, Tirna; Verheijen, Marc A W; Gullieuszik, Marco; Poggianti, Bianca M; van Gorkom, Jacqueline H; Ramatsoku, Mpati; Serra, Paolo; Moretti, Alessia; Vulcani, Benedetta; Bettoni, Daniela; Jaffé, L Yara; Tonnesen, Stephanie; Fritz, Jacopo (2020-04-23). "GASP XXV: neutral hydrogen gas in the striking jellyfish galaxy JO204". Monthly Notices of the Royal Astronomical Society. 494 (4): 5029–5043. arXiv:2004.04754. doi:10.1093/mnras/staa968. ISSN 0035-8711.
- ^ Wang, Jian-Min; Chen, Yan-Mei; Hu, Chen; Mao, Wei-Ming; Zhang, Shu; Bian, Wei-Hao (2009-11-01). "Active Galactic Nuclei with Double-Peaked Narrow Lines: Are they Dual Active Galactic Nuclei?". The Astrophysical Journal. 705 (1): L76–L80. arXiv:0910.0580. Bibcode:2009ApJ...705L..76W. doi:10.1088/0004-637X/705/1/L76. ISSN 0004-637X.
- ^ Nevin, R.; Comerford, J.; Müller-Sánchez, F.; Barrows, R.; Cooper, M. (2016-11-01). "The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei. II. Kinematic Classifications for the Population at z < 0.1". The Astrophysical Journal. 832 (1): 67. arXiv:1609.04018. Bibcode:2016ApJ...832...67N. doi:10.3847/0004-637X/832/1/67. ISSN 0004-637X.
- ^ Véron-Cetty, M. -P.; Véron, P. (2006-08-01). "A catalogue of quasars and active nuclei: 12th edition". Astronomy and Astrophysics. 455 (2): 773–777. Bibcode:2006A&A...455..773V. doi:10.1051/0004-6361:20065177. ISSN 0004-6361.
- ^ information@eso.org. "A jellyfish and the ram". www.spacetelescope.org. Retrieved 2024-04-18.
- ^ Poggianti, B. M.; Fasano, G.; Omizzolo, A.; Gullieuszik, M.; Bettoni, D.; Moretti, A.; Paccagnella, A.; Jaffé, Y. L.; Vulcani, B.; Fritz, J.; Couch, W.; D'Onofrio, M. (2016-03-01). "Jellyfish Galaxy Candidates at Low Redshift". The Astronomical Journal. 151 (3): 78. arXiv:1504.07105. Bibcode:2016AJ....151...78P. doi:10.3847/0004-6256/151/3/78. ISSN 0004-6256.
- ^ "Hubble Spots a Galaxy with Tendrils - NASA Science". science.nasa.gov. Retrieved 2024-07-26.
- ^ Poggianti, Bianca M.; Gullieuszik, Marco; Tonnesen, Stephanie; Moretti, Alessia; Vulcani, Benedetta; Radovich, Mario; Jaffé, Yara; Fritz, Jacopo; Bettoni, Daniela; Franchetto, Andrea; Fasano, Giovanni; Bellhouse, Callum; Omizzolo, Alessandro (2019-02-01). "GASP XIII. Star formation in gas outside galaxies". Monthly Notices of the Royal Astronomical Society. 482 (4): 4466–4502. arXiv:1811.00823. Bibcode:2019MNRAS.482.4466P. doi:10.1093/mnras/sty2999. ISSN 0035-8711.
- ^ Moretti, A.; Paladino, R.; Poggianti, B. M.; D'Onofrio, M.; Bettoni, D.; Gullieuszik, M.; Jaffé, Y. L.; Vulcani, B.; Fasano, G.; Fritz, J.; Torstensson, K. (2018-10-01). "GASP - X. APEX observations of molecular gas in the discs and in the tails of ram-pressure stripped galaxies". Monthly Notices of the Royal Astronomical Society. 480 (2): 2508–2520. arXiv:1803.06183. Bibcode:2018MNRAS.480.2508M. doi:10.1093/mnras/sty2021. ISSN 0035-8711.