NGC 2859

NGC 2859

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]
Type (R)SB(r)0+[4]
Apparent dimensions (V) 4′.3 × 3′.8[2]
Apparent magnitude (V) 11.8[2]
Notable features Double barred
Other designations
UGC 5001, PGC 26649[2]

NGC 2859 is a 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

  1. 1 2 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. 1 2 3 4 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. 1 2 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.
  4. 1 2 3 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

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


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