Astronomy:NGC 89
| 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
- ↑ 1.0 1.1 1.2 Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W. et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal 131 (2): 1163–1183. doi:10.1086/498708. ISSN 0004-6256. Bibcode: 2006AJ....131.1163S. https://ui.adsabs.harvard.edu/abs/2006AJ....131.1163S/abstract.
- ↑ 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.
- ↑ 3.0 3.1 "NED results for object NGC 0089". NASA/IPAC Extragalactic Database. Jet Propulsion Laboratory/California Institute of Technology. http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+89.
- ↑ Presotto, V. et al. (December 2009), "SCG0018-4854: A young and dynamic compact group", Astronomische Nachrichten 330 (9–10): 988–990, doi:10.1002/asna.200911275, Bibcode: 2009AN....330..988P.
- ↑ "NASA/IPAC Extragalactic Database Results for NGC 0089". NASA/IPAC. https://ned.ipac.caltech.edu/.
- ↑ 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.
- ↑ 7.0 7.1 "Cosmic Portrait of a Perturbed Family". European Southern Observatory. November 4, 2005. https://www.eso.org/public/news/eso0535/.
External links
- Template:Deprecated archive
- NGC 89 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
00h 21m 24.3s, −48° 39′ 57″
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