NGC 2545
| NGC 2545 | |
|---|---|
 NGC 2545 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Cancer |
| Right ascension | 08h 14m 14.1505s[1] |
| Declination | +21° 21′ 19.658″[1] |
| Redshift | 0.011291±0.00000900[1] |
| Heliocentric radial velocity | 3,385±3 km/s[1] |
| Distance | 158.97 ± 11.44 Mly (48.740 ± 3.507 Mpc)[2] |
| Group or cluster | NGC 2545 Group (LGG 156) |
| Apparent magnitude (V) | 13.4g[1] |
| Characteristics | |
| Type | (R)SB(r)ab[1] |
| Size | ~115,600 ly (35.44 kpc) (estimated)[1] |
| Apparent size (V) | 1.23′ × 1.09′[1] |
| Other designations | |
| IRAS 08113+2130, 2MASX J08141413+2121198, UGC 4287, MCG +04-20-007, PGC 23086, CGCG 119-016[1] | |
NGC 2545 is a barred spiral galaxy in the constellation of Cancer. Its velocity with respect to the cosmic microwave background is 3,613±16 km/s, which corresponds to a Hubble distance of 173.8 ± 12.2 Mly (53.29 ± 3.74 Mpc).[1] Additionally, 15 non-redshift measurements give a closer distance of 158.97 ± 11.44 Mly (48.740 ± 3.507 Mpc).[2] It was discovered by German-British astronomer William Herschel on 11 January 1787.[3][4]
NGC 2545 has an active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[5][6] It is also a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[1]
NGC 2545 group
[edit]NGC 2545 is a member of a group of galaxies named after it (also known as LGG 156). This group contains 5 galaxies, including NGC 2565, UGC 4308, CGCG 119-44, and CGCG 119-56.[7][8]
Supernova
[edit]One supernova has been observed in NGC 2545:
- SN 2008hn (Type Ic, mag. 18.4) was discovered by the Lick Observatory Supernova Search (LOSS) on 25 November 2008.[9][10]
See also
[edit]References
[edit]- 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 2545". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 26 March 2026.
- 1 2 "Distance Results for NGC 2545". NASA/IPAC Extragalactic Database. NASA. Retrieved 26 March 2026.
- ↑ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 79: 212–255. Bibcode:1789RSPT...79..212H. doi:10.1098/rstl.1789.0021.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 2545". Celestial Atlas. Retrieved 26 March 2026.
- ↑ Gavazzi, G.; Savorgnan, G.; Fumagalli, Mattia (2011). "The complete census of optically selected AGNs in the Coma supercluster: The dependence of AGN activity on the local environment". Astronomy and Astrophysics. 534: A31. arXiv:1107.3702. Bibcode:2011A&A...534A..31G. doi:10.1051/0004-6361/201117461.
- ↑ "NGC 2545". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 March 2026.
- ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
- ↑ "LGG 156". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 March 2026.
- ↑ Narla, A.; Thrasher, P.; Li, W.; Cenko, S. B.; Filippenko, A. V. (2008). "Supernovae 2008hl, 2008hm, and 2008hn". Central Bureau Electronic Telegrams (1586): 1. Bibcode:2008CBET.1586....1N.
- ↑ "SN 2008hn". Transient Name Server. IAU. Retrieved 26 March 2026.
External links
[edit]
Media related to NGC 2545 at Wikimedia Commons- NGC 2545 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
