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NGC 5668 is a nearly face-on spiral galaxy, visual magnitude about 11.5,[4] located about 81[2] million light years away in the constellation Virgo. It was discovered in 1786 by William Herschel.[4] It is a member of the NGC 5638 Group of galaxies, itself one of the Virgo III Groups strung out to the east of the Virgo Supercluster of galaxies.[5]

NGC 5668
GALEX image of NGC 5668
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension14h 33m 24.331s[1]
Declination+04° 27′ 01.75″[1]
Helio radial velocity1,582 ± 5[2] km/s
Distance80.9 ± 5.5 million light years (24.8 ± 1.7 Mpc)[2]
Characteristics
TypeSA(s)d[2]
Mass5.7×1010[2] M☉
Other designations
UGC 9363[3]

As seen from the Earth, it is inclined by an angle of 18° to the line of sight along a position angle of 145°. The morphological classification in the De Vaucouleurs system is SA(s)d,[2] indicating a pure spiral structure with loosely wound arms.[6] However, optical images of the galaxy indicate the presence of a weak bar structure spanning an angle of 12″ across the nucleus. There is a dwarf galaxy located around 650×10^3 ly (200 kpc) to the southeast of NGC 5668, and the two may be gravitationally interacting.[2]

Three supernovae have been observed in this galaxy: SN 1952G, SN 1954B, and SN 2004G.[7] The last, a type II supernova,[8] was initially imaged on January 19, 2004, at 43" to the west and 12".5 south of the galaxy core.[7] High velocity clouds of neutral hydrogen have been observed in NGC 5668, which may have their origin in supernova explosions and strong stellar winds.[9]




References


  1. 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: 1163–1183. doi:10.1086/498708. ISSN 0004-6256.
  2. R. A., Marino; et al. (July 2012), "Integral Field Spectroscopy and Multi-wavelength Imaging of the nearby Spiral Galaxy NGC 5668: An Unusual Flattening in Metallicity Gradient", The Astrophysical Journal, 754 (1): 61, arXiv:1205.5051, Bibcode:2012ApJ...754...61M, doi:10.1088/0004-637X/754/1/61, S2CID 2243509.
  3. "NGC 5668 -- Galaxy", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2013-07-11.
  4. "New General Catalog Objects: NGC 5650 - 5699". cseligman.com. Retrieved 2021-03-12.
  5. "The Virgo III Groups". Atlas of the Universe. Retrieved 2010-11-27.
  6. Buta, Ronald J.; et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 978-0521820486.
  7. Nakano, S.; et al. (2004), "Supernova 2004G in NGC 5668", IAU Circular, 8272: 1, Bibcode:2004IAUC.8272....1N.
  8. Elias-Rosa, N.; et al. (2004), "Supernova 2004G in NGC 5668", IAU Circular, 8273: 2, Bibcode:2004IAUC.8273....2E.
  9. Jiménez-Vicente, J.; Battaner, E. (June 2000), "Vertical motions in the disk of NGC 5668 as seen with optical Fabry-Perot spectroscopy", Astronomy and Astrophysics, 358: 812–818, arXiv:astro-ph/0004295, Bibcode:2000A&A...358..812J.



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[de] NGC 5668

NGC 5668 ist eine 11,6 mag helle Spiralgalaxie vom Hubble-Typ Sd im Sternbild Jungfrau, die schätzungsweise 70 Millionen Lichtjahre von der Milchstraße entfernt ist.
- [en] NGC 5668

[ru] NGC 5668

NGC 5668 (другие обозначения — UGC 9363, MCG 1-37-28, ZWG 47.90, IRAS14309+0440, PGC 52018) — спиральная галактика (Sd) в созвездии Дева.


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