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NGC 3664

NGC 3664
NGC 3664 by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo
Right ascension11h 24m 24.2s[1]
Declination+03° 19′ 30″[1]
Redshift0.004607 ± 0.000007 [1]
Heliocentric radial velocity1,381 ± 2 km/s[1]
Distance79 Mly (24.4 Mpc)[1]
Apparent magnitude (V)12.6 [2]
Characteristics
TypeSB(s)m pec [1]
Apparent size (V)2.0′ × 1.9′[1]
Notable featuresInteracting galaxy
Other designations
UGC 6419, Arp 5, VV 251, DDO 95, CGCG 039-170, MCG +01-29-041, PGC 35041[1]

NGC 3664 is a magellanic barred spiral galaxy in the constellation of Leo. It is located about 80 million light years away from Earth, which means, given its apparent dimensions, that NGC 3664 is approximately 50,000 light years across. It was discovered by Wilhelm Tempel on March 14, 1879.[3] It is a member of the NGC 3640 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.[4]

The galaxy is characterised by its asymmetric shape, which features a single spiral arm and an off-centre bar. The distribution of HI is equally asymmetric.[5]

Nearby galaxies

NGC 3664 has a smaller satellite galaxy, known as NGC 3664A or UGC 6418, which lies 6.2 arcminutes to the south,[6] at a projected distance of 25 to 30 kiloparsecs from NGC 3664.[7] The HI mass of NGC 3664A is 4.5×108 M☉,[5] which means that the system has similar masses as the system of the Large and Small Magellanic Cloud.[7] A HI bridge has been detected to connect the two galaxies in images obtained by the Very Large Array. The HI also appears warped at the side of NGC 3664 opposite of NGC 3664A, indicating an ongoing interaction. The bar of NGC 3664 could have developed due to this interaction.[5]

NGC 3664 and its satellite belong to the NGC 3640 group, named after the galaxy NGC 3640. Other members of the galaxy group include NGC 3630, NGC 3641, and NGC 3643.[8] The group belongs to the Leo II groups, a large collection of galaxies belonging to the Virgo Supercluster scattered across 30 million light years of space west of the Virgo Cluster.[9]

See also

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 3664. Retrieved 2020-01-30.
  2. ^ "Revised NGC Data for NGC 3664". spider.seds.org. Retrieved 25 November 2018.
  3. ^ Seligman, Courtney. "NGC 3664 (= PGC 35041 = Arp 5)". Celestial Atlas. Retrieved 19 November 2018.
  4. ^ "The Leo III Groups". Atlas of the Universe. Archived from the original on July 22, 2012. Retrieved 2010-11-27.
  5. ^ a b c Wilcots, Eric M.; Prescott, Moire K. M. (April 2004). "HI Observations of Barred Magellanic Spirals. II. The Frequency and Impact of Companions". The Astronomical Journal. 127 (4): 1900–1916. Bibcode:2004AJ....127.1900W. doi:10.1086/381293.
  6. ^ Epinat, B.; Amram, P.; Marcelin, M.; Balkowski, C.; Daigle, O.; Hernandez, O.; Chemin, L.; Carignan, C.; Gach, J.-L.; Balard, P. (1 August 2008). "GHASP: an Hα kinematic survey of spiral and irregular galaxies – VI. New Hα data cubes for 108 galaxies". Monthly Notices of the Royal Astronomical Society. 388 (2): 500–550. arXiv:0805.0976. Bibcode:2008MNRAS.388..500E. doi:10.1111/j.1365-2966.2008.13422.x.
  7. ^ a b Choi, Yumi; Nidever, David L.; Olsen, Knut; Besla, Gurtina; Blum, Robert D.; Zaritsky, Dennis; Cioni, Maria-Rosa L.; van der Marel, Roeland P.; Bell, Eric F.; Johnson, L. Clifton; Vivas, A. Katherina; Walker, Alistair R.; de Boer, Thomas J. L.; Noël, Noelia E. D.; Monachesi, Antonela; Gallart, Carme; Monelli, Matteo; Stringfellow, Guy S.; Massana, Pol; Martinez-Delgado, David; Muñoz, Ricardo R. (18 December 2018). "SMASHing the LMC: Mapping a Ring-like Stellar Overdensity in the LMC Disk". The Astrophysical Journal. 869 (2): 125. arXiv:1805.00481. Bibcode:2018ApJ...869..125C. doi:10.3847/1538-4357/aaed1f. S2CID 55592668.
  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. S2CID 119194025.
  9. ^ "The Leo II Groups". atlasoftheuniverse.com.
Quelle: https://en.wikipedia.org/wiki/NGC_3664