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NGC 4660 is an elliptical galaxy located about 63 million light-years away[2] in the constellation Virgo.[3] The galaxy was discovered by astronomer William Herschel on March 15, 1784[4] and is a member of the Virgo Cluster.[5][6]

NGC 4660
HST image of NGC 4660.
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension12h 44m 32.0s[1]
Declination11° 11′ 26″[1]
Redshift0.003612[1]
Helio radial velocity1083 km/s[1]
Distance63 Mly (19.2 Mpc)[1]
Group or clusterVirgo Cluster
Apparent magnitude (V)12.16[1]
Characteristics
TypeE5[1]
Size~39,500 ly (12.10 kpc) (estimated)[1]
Apparent size (V)2.2 x 1.6[1]
Other designations
CGCG 71-23, MCG 2-33-6, PGC 42917, UGC 7914, VCC 2000[1]

NGC 4660 forms a tight pair with Messier 59.[7]


Tidal filament


A long tidal filament was detected associated with NGC 4660. This appears to indicate a past gravitational interaction with another galaxy. The progenitor galaxy that may have produced the filament associated with NGC 4660 was a gas-rich spiral. Alternatively, the detection of tidal dwarf galaxies[6] (TDGs) which are “recycled” low-mass galaxies formed from interactions or mergers[8] suggest that the filament originated from a possible satellite galaxy that got stripped during its closest approach in its orbit to NGC 4660. This would make the filament a tidal stream comparable to the stream associated with the Sagittarius Dwarf Spheroidal Galaxy of the Milky Way.[6]


Supermassive black hole


NGC 4660 may have a supermassive black hole with an estimated mass of 800 million suns (8×108 M☉).[9]


See also



References


  1. "NASA/IPAC Extragalactic Database". Results for NGC 4660. Retrieved 2018-04-07.
  2. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-04-07.
  3. "NGC 4660 in the Virgo cluster of galaxies". www.spacetelescope.org. Retrieved 2018-04-07.
  4. "New General Catalog Objects: NGC 4650 - 4699". cseligman.com. Retrieved 2018-04-05.
  5. Binggeli, B.; Sandage, A.; Tammann, G. A. (1985-09-01). "Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area". The Astronomical Journal. 90: 1681–1759. Bibcode:1985AJ.....90.1681B. doi:10.1086/113874. ISSN 0004-6256.
  6. Kemp, S. N.; Martínez-Robles, C.; Márquez-Lugo, R. A.; Zepeda-García, D.; Franco-Hernández, R.; A. Nigoche-Netro; Ramos-Larios, G.; Navarro, S. G.; Corral, L. J. (2016). "The Tidal Filament of NGC 4660". The Astrophysical Journal. 830 (2): 66. arXiv:1607.04670. Bibcode:2016ApJ...830...66K. doi:10.3847/0004-637x/830/2/66. ISSN 0004-637X. S2CID 118805307.
  7. Mamon, G. A. (2008-07-01). "The nature of the nearest compact group of galaxies from precise distance measurements". Astronomy & Astrophysics. 486 (1): 113–117. arXiv:0803.3181. Bibcode:2008A&A...486..113M. doi:10.1051/0004-6361:200809827. ISSN 0004-6361. S2CID 3994849.
  8. "Galaxy Recycling: the Origins of Tidal Dwarf Galaxies | Department of Astronomy". astronomy.case.edu. Retrieved 2018-04-08.
  9. Pechetti, Renuka; Seth, Anil; Cappellari, Michele; McDermid, Richard; Brok, Mark den; Mieske, Steffen; Strader, Jay (2017-11-13). "Detection of Enhanced Central Mass-to-light Ratios in Low-mass Early-type Galaxies: Evidence for Black Holes?". The Astrophysical Journal. 850 (1): 15. arXiv:1709.09172. Bibcode:2017ApJ...850...15P. doi:10.3847/1538-4357/aa9021. ISSN 1538-4357. S2CID 119357906.


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На других языках

[de] NGC 4660

NGC 4660 ist eine elliptische Galaxie vom Hubble-Typ E2 im Sternbild Jungfrau auf der Ekliptik. Sie ist schätzungsweise 46 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 30.000 Lichtjahren. Unter der Katalognummer VVC 2000 wird sie als Mitglied des Virgo-Galaxienhaufens gelistet. Im selben Himmelsareal befinden sich u. a. die Galaxien IC 3698, IC 3701, IC 3711, IC 3743.
- [en] NGC 4660

[ru] NGC 4660

NGC 4660 (другие обозначения — UGC 7914, MCG 2-33-6, ZWG 71.23, VCC 2000, PGC 42917) — эллиптическая галактика (E) в созвездии Дева.


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