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NGC 89
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| NGC 89 | |
|---|---|
 NGC 89 (bottom) surrounded by the other galaxies in Robert's Quartet | |
| Observation data (J2000 epoch) | |
| Constellation | Phoenix |
| Right ascension | 00h 21m 24.355s[1] |
| Declination | −48° 39′ 55.28″[1] |
| Redshift | 0.011074 ± 0.000067[2] |
| Distance | 144 ± 10 Mly (44.1 ± 3.1 Mpc)[3] |
| Apparent magnitude (V) | 14.18[3] |
| Characteristics | |
| Type | SB0/a pec[4] |
| Apparent size (V) | 0′.957 × 0′.459[1] |
| Other designations | |
| PGC 1374, ESO 194-G011 | |
NGC 89 is an unbarred spiral galaxy located approximately 150 million light-years away in the southern constellation of Phoenix.[5] It was discovered on September 30, 1834, by the English astronomer John Herschel.[6]
Physical characteristics
NGC 87 is classified morphologically as a barred or intermediate spiral galaxy with peculiar features induced by tidal perturbation. At its distance of 150 million light-years, its angular diameter corresponds to a physical size of roughly 50,000 light-years across.
The galaxy features an active galactic nucleus (AGN) classified as a Seyfert 2 nucleus. High-resolution imaging reveals a prominent dust lane crossing the central region and asymmetric spiral arms displaying star-forming regions triggered by interaction with its neighbors.
Group membership
NGC 89 is a member of Robert's Quartet, a compact galaxy group located in Phoenix that also includes NGC 87, NGC 88, and NGC 92.[7] The four member galaxies reside within a region spanning roughly 150,000 light-years across and exhibit active gravitational interactions.[7]
See also
References
- 1 2 3 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
- ↑ Boselli, A.; et al. (October 1996), "The molecular gas content of spiral galaxies in compact groups.", Astronomy and Astrophysics, 314: 738–744, Bibcode:1996A&A...314..738B.
- 1 2 "NED results for object NGC 0089". NASA/IPAC Extragalactic Database. Jet Propulsion Laboratory/California Institute of Technology. Retrieved 2015-10-06.
- ↑ Presotto, V.; et al. (December 2009), "SCG0018-4854: A young and dynamic compact group", Astronomische Nachrichten, 330 (9–10): 988–990, arXiv:0910.4978, Bibcode:2009AN....330..988P, doi:10.1002/asna.200911275.
- ↑ "NASA/IPAC Extragalactic Database Results for NGC 0089". NASA/IPAC. Retrieved August 18, 2026.
- ↑ Sinnott, Roger W. (1988). NGC 2000.0: The Complete New General Catalogue and Index Catalogues of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation. ISBN 978-0-933346-51-2.
- 1 2 "Cosmic Portrait of a Perturbed Family". ESO News. European Southern Observatory. November 4, 2005. Retrieved August 18, 2026.
External links
Media related to NGC 89 at Wikimedia Commons- NGC 89
- NGC 89 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
