NGC 89

Last updated
NGC 89
Robert's quartet.jpg
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 a barred spiral or lenticular galaxy, part of Robert's Quartet, a group of four interacting galaxies.

This member has a Seyfert 2 nucleus with extra-planar features emitting H-alpha radiation. There are filamentary features on each side of the disk, including a jet-like structure extending about 4 kpc in the NE direction. It may have lost its neutral hydrogen (H1) gas due to interactions with the other members of the clusters—most likely NGC 92. [4]

References

  1. 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.
  2. ↑ 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. 1 2 "NED results for object NGC 0089". NASA/IPAC Extragalactic Database. Jet Propulsion Laboratory/California Institute of Technology. Retrieved 2015-10-06.
  4. 1 2 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.
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