Langbahn Team – Weltmeisterschaft

NGC 4709

NGC 4709
legacy surveys image of NGC 4709 (large galaxy in the middle), as well as other galaxies of the Centaurus Cluster, including NGC 4706.
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension12h 50m 03.9s[1]
Declination−41° 22′ 55″[1]
Redshift0.015604[1]
Heliocentric radial velocity4678 km/s[1]
Distance150 Mly (45 Mpc)[2]
Group or clusterCentaurus Cluster (Cen 45 subgroup)
Apparent magnitude (V)12.0[1]
Characteristics
TypeE1[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]

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]

Distance estimates

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 also

References

  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.{{cite book}}: CS1 maint: others (link)
  3. ^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2018-04-13.
  4. ^ "Revised NGC Data for NGC 4709". spider.seds.org. 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. Bibcode:2013dcsg.book.....O. 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. S2CID 18552647.
  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". cseligman.com. 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.


Quelle: https://en.wikipedia.org/wiki/NGC_4709