NGC 5668
NGC 5668 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Virgo |
Right ascension | 14h 33m 24.331s[1] |
Declination | +04° 27′ 01.75″[1] |
Redshift | 0.005280 |
Heliocentric radial velocity | 1,582 ± 5[2] km/s |
Distance | 80.9 ± 5.5 million light years (24.8 ± 1.7 Mpc)[2] |
Group or cluster | NGC 5638 Group, NGC 5746 Group, Virgo III Groups |
Characteristics | |
Type | SA(s)d[2] |
Mass | 5.7×1010[2] M☉ |
Size | ~48,400 ly (14.84 kpc) (estimated) |
Apparent size (V) | 3.0′ × 3.0′ |
Other designations | |
IRAS 14309+0440, UGC 9363, MCG +01-37-028, PGC 52018, CGCG 047-090[3] |
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 on 29 April 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] In addition, A.M. Garcia listed NGC 5668 in the 31 member NGC 5746 galaxy group (also known as LGG 386).[6]
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.[7] 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 (type unknown, mag. 17.9),[8] SN 1954B (type Ia, mag. 12.3),[9] and SN 2004G (type II, mag. 17.2).[10][11][12] The last was initially imaged on January 19, 2004, at 43" to the west and 12".5 south of the galaxy core.[11] High velocity clouds of neutral hydrogen have been observed in NGC 5668, which may have their origin in supernova explosions and strong stellar winds.[13]
Gallery
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NGC 5668 (SDSS DR14)
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GALEX image of NGC 5668
See also
[edit]References
[edit]- ^ a b 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.
- ^ a b c d e f g 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.
- ^ "NGC 5668 -- Galaxy", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2013-07-11.
- ^ a b "New General Catalog Objects: NGC 5650 - 5699". cseligman.com. Retrieved 2021-03-12.
- ^ "The Virgo III Groups". Atlas of the Universe. Retrieved 2010-11-27.
- ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
- ^ Buta, Ronald J.; et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 978-0521820486.
- ^ "SN 1952G". Transient Name Server. IAU. Retrieved 7 September 2024.
- ^ "SN 1954B". Transient Name Server. IAU. Retrieved 7 September 2024.
- ^ "SN 2004G". Transient Name Server. IAU. Retrieved 7 September 2024.
- ^ a b Nakano, S.; et al. (2004), "Supernova 2004G in NGC 5668", IAU Circular, 8272: 1, Bibcode:2004IAUC.8272....1N.
- ^ Elias-Rosa, N.; et al. (2004), "Supernova 2004G in NGC 5668", IAU Circular, 8273: 2, Bibcode:2004IAUC.8273....2E.
- ^ 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.
External links
[edit]- Media related to NGC 5668 at Wikimedia Commons