UGC 12840
| UGC 12840 | |
|---|---|
 UGC 12840 imaged by Legacy Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Pegasus |
| Right ascension | 23h 54m 29.94s[1] |
| Declination | +28° 52′ 17.55″[1] |
| Redshift | 0.022877[1] |
| Heliocentric radial velocity | 6,858 ± 3 km/s |
| Distance | 342.9 ± 24.0 Mly (105.12 ± 7.36 Mpc)[1] |
| magnitude (J) | 11.58[1] |
| magnitude (K) | 12.06[1] |
| Characteristics | |
| Type | (R)SAB(s)0^0^[1] |
| Size | ~119,000 ly (36.5 kpc) (estimated)[1] |
| Other designations | |
| CGCG 498-032, 2MASX J23542990+2852173, PGC 72829, KIG 1044, LDCE 1601 NED005, MCG +05-01-002, NSA 152890, UZC J235430.0+285217[1] | |
UGC 12840 is a lenticular galaxy located in the constellation of Pegasus. The redshift of this galaxy is estimated to be (z) 0.022[1] and it was first discovered by astronomers in September 1982 where they found it in the Pegasus Supercluster.[2] It is also categorized as an isolated galaxy.[3][4]
Description
[edit]UGC 12840 is a gas-rich face-on lenticular galaxy with an SB0 morphology.[5][2][6] The appearance of the galaxy looks almost round but the rotation velocity has a large projection of 100 kilometers per seconds.[6] There is also an outer H II ring structure with a diameter of 11.4 kiloparsecs, with further evidence of a nuclear emission line source described as bright.[5] The far-infrared emission of the galaxy has been estimated as 0.40 jansky at 100 micrometer (ɥm) detections.[7]
A study published in December 2003, has found UGC 12840 is a late-type galaxy. The total molecular gas mass has been estimated to be 8.25 M☉ based on its carbon oxide (CO) line intensity with the heliocentric velocity of the lines calculated as 6,850 kilometers per seconds.[8] The center of the galaxy possibly displays noncircular gas motions. A giant ring is also detected in addition with a measured total radius of 12.5 kiloparsecs and has hydrogen-alpha emission.[6]
References
[edit]- 1 2 3 4 5 6 7 8 9 10 "NED Search results for UGC 12840". NASA/IPAC Extragalactic Database. Retrieved 2026-05-15.
- 1 2 Focardi, P.; Marano, B.; Vettolani, G. (September 1982). "The south west extension of the Perseus supercluster". ui.adsabs.harvard.edu. Retrieved 2026-05-15.
- ↑ Karachentseva, V. E. (1973). "The Catalogue of Isolated Galaxies". Astrof. Issledovanija Byu. Spec. Ast. Obs. 8: 3–49. Bibcode:1973AISAO...8....3K.
- ↑ Haynes, M. P.; Giovanelli, R. (June 1984). "Neutral hydrogen in isolated galaxies. IV - Results for the Arecibo sample". The Astronomical Journal. 89: 758. Bibcode:1984AJ.....89..758H. doi:10.1086/113573. ISSN 0004-6256.
- 1 2 Pogge, Richard W.; Eskridge, Paul B. (October 1993). "Star formation in the disks of H I-rich S0 galaxies". The Astronomical Journal. 106: 1405. Bibcode:1993AJ....106.1405P. doi:10.1086/116735. ISSN 0004-6256.
- 1 2 3 Sil’chenko, Olga K.; Moiseev, Alexei V.; Egorov, Oleg V. (2019-09-01). "The Gas Kinematics, Excitation, and Chemistry, in Connection with Star Formation, in Lenticular Galaxies". The Astrophysical Journal Supplement Series. 244 (1): 6. arXiv:1907.07261. Bibcode:2019ApJS..244....6S. doi:10.3847/1538-4365/ab3415. ISSN 0067-0049.
- ↑ Eskridge, Paul B.; Pogge, Richard W. (June 1991). "H I content and FIR emission of S0 galaxies". The Astronomical Journal. 101: 2056. Bibcode:1991AJ....101.2056E. doi:10.1086/115829. ISSN 0004-6256.
- ↑ Sauty, S.; Casoli, F.; Boselli, A.; Gerin, M.; Lequeux, J.; Braine, J.; Gavazzi, G.; Dickey, J.; Kazès, I.; Fouqué, P. (2003-11-17). "12CO(1–0) observation of isolated late-type galaxies" (PDF). Astronomy & Astrophysics. 411 (3): 381–390. doi:10.1051/0004-6361:20031399. ISSN 0004-6361.
External links
[edit]- UGC 12840 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
