NGC 4709

NGC 4709 is an elliptical galaxy[3] located in the constellation Centaurus.[4] It is considered to be a member of the Centaurus Cluster[5][6] and is the dominant member of a small group of galaxies known as "Cen 45"[7] which is currently merging with the main Centaurus Cluster (Cen 30)[8] even though the two subclusters' line of sight redshift velocities differ by about 1500 km/s.[9] NGC 4709 was discovered by astronomer James Dunlop on May 7, 1826.[10]

NGC 4709
2MASS NGC 4709.jpg
2MASS image of NGC 4709.
Observation data (J2000 epoch)
Right ascension12h 50m 03.9s[1]
Declination−41° 22′ 55″[1]
Helio radial velocity4678 km/s[1]
Distance150 Mly (45 Mpc)[2]
Group or clusterCentaurus Cluster (Cen 45 subgroup)
Apparent magnitude (V)12.0[1]
Size~127,700 ly (39.14 kpc) (estimated)[1]
Apparent size (V)2.4 x 2.0[1]
Other designations
ESO 323-3, CCC 130, MCG -7-26-56, PGC 43423[1]

Distance estimatesEdit

Lucey et al. suggests that NGC 4709 and the Cen 45 subgroup lie at about the same distance as the main Centaurus Cluster[11][8] which is about 150 Mly (45 Mpc).[2]

See alsoEdit


  1. ^ a b c d e f g h i "NASA/IPAC Extragalactic Database". Results for NGC 4709. Retrieved 2018-04-12.
  2. ^ a b New horizons in globular cluster astronomy : proceedings of a conference held at Università di Padova, Padova, Italy, 24-28 June, 2002. King, Ivan R., Piotto, G. (Giampaolo) (1st ed.). San Francisco, Calif.: Astronomical Society of the Pacific. 2003. ISBN 978-1583811436. OCLC 54022703.CS1 maint: others (link)
  3. ^ "Your NED Search Results". Retrieved 2018-04-13.
  4. ^ "Revised NGC Data for NGC 4709". Retrieved 2018-04-13.
  5. ^ Jerjen, H.; Dressler, A. (1997-07-01). "Studies of the Centaurus cluster". Astronomy and Astrophysics Supplement Series. 124 (1): 1–12. Bibcode:1997A&AS..124....1J. doi:10.1051/aas:1997355. ISSN 0365-0138.
  6. ^ O'Meara, Stephen James (2013-04-08). Deep-Sky Companions: Southern Gems. Cambridge University Press. p. 460. ISBN 978-1-139-85154-1.
  7. ^ Lucey, J. R.; Currie, Malcom J.; Dickens, R. J. (1986-07-01). "The Centaurus cluster of galaxies – II. The bimodal velocity structure". Monthly Notices of the Royal Astronomical Society. 221 (2): 453–472. Bibcode:1986MNRAS.221..453L. doi:10.1093/mnras/221.2.453. ISSN 0035-8711.
  8. ^ a b Churazov, E.; Gilfanov, M.; Forman, W.; Jones, C. (1999). "Evidence for Merging in the Centaurus Cluster". The Astrophysical Journal. 520 (1): 105. arXiv:astro-ph/9802166. Bibcode:1999ApJ...520..105C. doi:10.1086/307421. ISSN 0004-637X.
  9. ^ Walker, S. A.; Fabian, A. C.; Sanders, J. S. (2013-11-11). "An XMM–Newton view of the merging activity in the Centaurus cluster". Monthly Notices of the Royal Astronomical Society. 435 (4): 3221–3230. arXiv:1308.2090. Bibcode:2013MNRAS.435.3221W. doi:10.1093/mnras/stt1515. ISSN 0035-8711.
  10. ^ "New General Catalog Objects: NGC 4700 - 4749". Retrieved 2018-04-11.
  11. ^ Lucey, J. R.; Currie, Malcolm J.; Dickens, R. J. (1986-10-01). "The Centaurus cluster of galaxies – III. Its structure and the distribution of the different galaxy types". Monthly Notices of the Royal Astronomical Society. 222 (3): 427–447. Bibcode:1986MNRAS.222..427L. doi:10.1093/mnras/222.3.427. ISSN 0035-8711.

External linksEdit