NGC 289

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NGC 289
Gentle Giant Galaxy (iotw2332a).jpg
Hubble Space Telescope image of NGC 289
Observation data (J2000 epoch)
Constellation Sculptor
Right ascension 00h 52m 42.365s [1]
Declination −31° 12′ 20.99″ [1]
Redshift 0.0054 [2]
Heliocentric radial velocity 1,628 km/s [3]
Distance 76.1  Mly (23.33  Mpc) [3]
Apparent magnitude  (V)11.0 [4]
Apparent magnitude  (B)11.4 [2]
Characteristics
Type SB(rs)bc [5]
Apparent size  (V)3.1' x 2.5' [4]
Other designations
MCG -05-03-010, IRAS 00502-3128, [2] PGC 3089, 2MASSX J00524236-3112209

NGC 289 is a spiral galaxy in the southern constellation of Sculptor, located at a distance of 76 megalight-years from the Milky Way. [3] It was discovered on September 27, 1834, by John Herschel. The compiler of the New General Catalogue, John Louis Emil Dreyer, noted that NGC 289 was "pretty bright, large, extended, between 2 considerably bright stars". [4] The plane of the galaxy is inclined by an angle of 45° to the line of sight from the Earth. [5]

Contents

This is a Type II Seyfert galaxy with an active galactic nucleus. A dust lane is seen crossing the nucleus, and there are indications of recent starburst activity nearby. [6] NGC 289 is a giant, gas-rich, low surface brightness galaxy with a small bulge at the nucleus, a small central bar, and two inner spiral arms. These arms split into multiple parts as they extend into the outer disk. The galaxy has a dark matter halo that has an estimated 3.5 times the mass of the gaseous and stellar components. There is a dwarf elliptical companion to the north of the galaxy, [7] designated Arp 1981, [6] that may be having a perturbing influence. [7]

References

  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.; 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. 1 2 3 "NGC 289". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2015-09-30.
  3. 1 2 3 Tully, R. Brent; et al. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 50. arXiv: 1605.01765 . Bibcode:2016AJ....152...50T. doi: 10.3847/0004-6256/152/2/50 . S2CID   250737862.
  4. 1 2 3 "New General Catalog Objects: NGC 250–299" . Retrieved 2015-09-30.
  5. 1 2 Pence, W. D.; Blackman, C. P. (October 1984). "Gas dynamics in barred spiral galaxies – II. NGC 7496 and 289". Monthly Notices of the Royal Astronomical Society. 210 (3): 547–563. Bibcode:1984MNRAS.210..547P. doi: 10.1093/mnras/210.3.547 .
  6. 1 2 Smajić, Semir; et al. (May 2013). "The central kpc of edge-on AGN". ePrint. arXiv: 1305.4938 . Bibcode:2013arXiv1305.4938S.
  7. 1 2 Walsh, Wilfred; et al. (May 1997). "The Giant, Gas-Rich, Low-Surface-Brightness Galaxy NGC 289". Astronomical Journal. 113: 1591–1606. Bibcode:1997AJ....113.1591W. doi:10.1086/118377.
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