GALEX image of NGC 5668
|Right ascension||14h 33m 24.331s|
|Declination||+04° 27′ 01.75″|
|Helio radial velocity||1,582 ± 5 km/s|
|Distance||80.9 ± 5.5 Mly (24.8 ± 1.7 Mpc)|
NGC 5668 is a nearly face-on spiral galaxy located about 81 million light years away in the constellation Virgo. 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, indicating a pure spiral structure with loosely wound arms. 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 kly (200 kpc) to the southeast of NGC 5668, and the two may be gravitationally interacting.
Three supernovae have been observed in this galaxy: SN 1952G, SN 1954B, and SN 2004G. The last, a type II supernova, was initially imaged on January 19, 2004, at 43" to the west and 12".5 south of the galaxy core. High velocity clouds of neutral hydrogen have been observed in NGC 5668, which may have their origin in supernova explosions and strong stellar winds.
- Skrutskie, M. F. et al. (February 2006), The Two Micron All Sky Survey (2MASS), Astrophysical Journal 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
- 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.
- NGC 5668 -- Galaxy, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2013-07-11.
- Buta, Ronald J. et al. (2007), Atlas of Galaxies, Cambridge University Press, pp. 13–17, ISBN 0521820480.
- 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.
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