NGC 5468

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NGC 5468
NGC5468 - HST.png
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension 14h 06m 34.9s[1]
Declination−05° 27′ 11″[1]
Redshift0.009480 +/- 0.000013 [1]
Helio radial velocity2842 ± 4 km/s[1]
Distance138 ± 22.7 Mly (42.5 ± 7.0 Mpc)[1]
Apparent magnitude (V)12.5[2]
Characteristics
TypeSAB(rs)cd [1]
Apparent size (V)2′.6 × 2′.4[1]
Other designations
UGCA 384, MCG -01-36-007, PGC 50323[1]
See also: Galaxy, List of galaxies

NGC 5468 is an intermediate spiral galaxy located in the constellation Virgo. It is located at a distance of circa 140 million light years from Earth, which, given its apparent dimensions, means that NGC 5468 is about 110,000 light years across. It was discovered by William Herschel οn March 5, 1785.[3]

NGC 5468 has been home to 5 supernovae in the last 20 years, SN 1999cp (type Ia, mag. 18.2), SN 2002cr (type Ia, mag. 16.5), SN 2002ed (type IIP, mag 16.5), SN 2005P (type Ia-pec, mag 18.1), and SN 2018dfg (type IIb).[4][5] NGC 5468 is seen face-on. The spiral pattern is open. The two principal arms emanate from a small bar and start to branch into several thin fragments after a half the one and a quarter revolution the other. In the images of the Carnegie Atlas of Galaxies can be seen three large HII regions and some fainter ones.[6] These regions feature intense star formation. SN 2005P was located at the edge of one of these regions.[7]

NGC 5468 forms a non-interacting pair with NGC 5472, which lies at a projected distance of 5.1 arcminuntes. NGC 5468 belongs to the NGC 5493 galaxy group. Other members of the group are the interracting pair Arp 271 (NGC 5426 and NGC 5427), NGC 5476, and NGC 5493.[8]

References[edit]

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 5468. Retrieved 2016-01-18.
  2. ^ "Revised NGC Data for NGC 5468". spider.seds.org. Retrieved 25 November 2018.
  3. ^ Seligman, Courtney. "NGC 5468 (= PGC 50323)". Celestial Atlas. Retrieved 19 November 2018.
  4. ^ List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  5. ^ "Bright Supernova pages - Most prolific galaxies". www.rochesterastronomy.org.
  6. ^ Sandage, A., Bedke, J. (1994), The Carnegie Atlas of Galaxies. Volume I, Carnegie Institution of Washington
  7. ^ Lyman, J. D.; James, P. A.; Perets, H. B.; Anderson, J. P.; Gal-Yam, A.; Mazzali, P.; Percival, S. M. (September 2013). "Environment-derived constraints on the progenitors of low-luminosity Type I supernovae". Monthly Notices of the Royal Astronomical Society. 434 (1): 527–541. arXiv:1306.2474. Bibcode:2013MNRAS.434..527L. doi:10.1093/mnras/stt1038.
  8. ^ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z∼ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x.

External links[edit]