NGC 2859

NGC 2859
NGC 2859 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationLeo Minor
Right ascension09h 24m 18.549s
Declination+34° 30′ 48.16″
Redshift1,687±8 km/s km/s
Distance82.8 Mly (25.4 Mpc)
Apparent magnitude (V)10.9
Characteristics
Type(R)SB(r)0+
Apparent size (V)4.6 × 4.1
Notable featuresDouble barred
Other designations
NGC 2859, UGC 5001, PGC 26649

NGC 2859 is a barred lenticular galaxy located some 83 million light years away in the constellation Leo Minor. The morphological classification is (R)SB(r)0+, 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.

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:, with no indication of activity.

References

  1. 1 2 3 4 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 230. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
  2. 1 2 Skrutskie, Michael F.; et al. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  3. 1 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.
  4. 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, S2CID 59476838.
  5. 1 2 3 Buta, Ronald J.; Corwin, Harold G.; Odewahn, Stephen C. (2007), Atlas of Galaxies, Cambridge University Press, p. 118, ISBN 978-0521820486.
  6. ↑ 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.