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NGC 2859 is a barred lenticular galaxy located some 83[3] million light years away in the constellation Leo Minor. The morphological classification is (R)SB(r)0+,[4] where the S0+ notation indicates a well-defined physical structure that is lacking in visible spiral arms. It has a strong bar (B) of the "ansae" type, which means it grows brighter or wider toward the tips. A faint, secondary bar is positioned at nearly a right angle to the main bar. These features are surrounded by a weak inner ring (r) that appears diffuse. The outer region of the galaxy hosts a prominent, detached ring (R) that includes a series of blue-hued knots along the eastern side.[4]

NGC 2859
NGC 2859 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo Minor
Right ascension09h 24m 18.549s[1]
Declination+34° 30′ 48.16″[1]
Redshift1687 ± 8 km/s[2]
Distance82.8 Mly (25.4 Mpc)[3]
Apparent magnitude (V)11.8[2]
Characteristics
Type(R)SB(r)0+[4]
Apparent size (V)4′.3 × 3′.8[2]
Notable featuresDouble barred
Other designations
UGC 5001, PGC 26649[2]

The central supermassive black hole is an estimated 105 million times the mass of the Sun. The nucleus is tentatively classified as a transition type T2:,[3] with no indication of activity.[5]


References


  1. 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: 1163–1183. doi:10.1086/498708. ISSN 0004-6256.
  2. Jet Propulsion Laboratory, California Institute of Technology. "Results for NGC 2859". NASA/IPAC Extragalactic Database. National Aeronautics and Space Administration. Retrieved 2006-11-21.
  3. Richings, A. J.; et al. (August 2011), "The connection between radio loudness and central surface brightness profiles in optically selected low-luminosity active galaxies", Monthly Notices of the Royal Astronomical Society, 415 (3): 2158–2172, arXiv:1104.1053, Bibcode:2011MNRAS.415.2158R, doi:10.1111/j.1365-2966.2011.18845.x, S2CID 59476838.
  4. Buta, Ronald J.; Corwin, Harold G.; Odewahn, Stephen C. (2007), Atlas of Galaxies, Cambridge University Press, p. 118, ISBN 978-0521820486.
  5. de Lorenzo-Cáceres, A.; et al. (May 2013), "Distinct stellar populations in the inner bars of double-barred galaxies", Monthly Notices of the Royal Astronomical Society, 431 (3): 2397–2418, arXiv:1302.5701, Bibcode:2013MNRAS.431.2397D, doi:10.1093/mnras/stt334, S2CID 118502022.



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На других языках

[de] NGC 2859

NGC 2859 ist eine linsenförmige Galaxie mit aktivem Galaxienkern vom Hubble-Typ SB0/a im Sternbild Kleiner Löwe am Nordsternhimmel. Sie ist schätzungsweise 74 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 100.000 Lichtjahren. Gemeinsam mit NGC 2778, NGC 2779, NGC 2780, NGC 2793 bildet sie die NGC 2859-Gruppe.
- [en] NGC 2859

[ru] NGC 2859

NGC 2859 (другие обозначения — UGC 5001, MCG 6-21-30, ZWG 181.40, PGC 26649) — галактика в созвездии Малый Лев.


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