NGC 2859

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
NGC 2859
NGC 2859 HST 9788 14 R814asinhG814logB658n.png
NGC 2859 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation Leo Minor
Right ascension 09h 24m 18.549s[1]
Declination +34° 30′ 48.16″[1]
Redshift 1687 ± 8 km/s[2]
Distance 82.8 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 features Double barred
Other designations
UGC 5001, PGC 26649[2]
See also: Galaxy, List of galaxies

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]

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[edit]

  1. ^ a b Skrutskie, M. F.; et al. (February 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
  2. ^ a b c d 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. ^ a b c 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.
  4. ^ a b c Buta, Ronald J.; Corwin, Harold G.; Odewahn, Stephen C. (2007), Atlas of Galaxies, Cambridge University Press, p. 118, ISBN 0521820480.
  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.

External links[edit]

Coordinates: Sky map 09h 24m 18.549s, +34° 30′ 48.16″