Centaurus_Cluster Knowpia

Centaurus Cluster
Centaurus Cluster
Observation data (Epoch J2000)
Constellation(s)	Centaurus
Right ascension	12h 48m 51.8s
Declination	−41° 18′ 21″
Brightest member	NGC 4696
Number of galaxies	~100
Richness class	0
Bautz–Morgan classification	I-II
Redshift	0.01140 (3 418 km/s)
Distance	52.4 Mpc (170.9 Mly) h−1; 0.705
X-ray flux	15.7×10−11 erg s−1 cm−2 (0.5–2 keV)
Other designations
	Abell 3526
	See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

The Centaurus Cluster (A3526) is a cluster of hundreds of galaxies, located approximately 170 million light-years away in the Centaurus constellation. The brightest member galaxy is the elliptical galaxy NGC 4696 (~11m). The Centaurus cluster shares its supercluster, the Hydra–Centaurus Supercluster, with IC4329 Cluster and Hydra Cluster.

The cluster consists of two different sub-groups of galaxies with different velocities.^[3] Cen 30 is the main subgroup containing NGC 4696. Cen 45 which is centered on NGC 4709, is moving at 1500 km/s relative to Cen 30,^[3] and is believed to be merging with the main cluster.^[4]

Gallery edit

NGC 4696: a cosmic question mark
Chandra X-ray image showing the inner 6.7 arcminutes of the core of the Centaurus Cluster. This image shows the hot intracluster medium, at temperatures of a few tens of million kelvins.
Region around NGC 4709 (large galaxy in the middle) in the western part of the Centaurus Cluster.
East part of the Centaurus Cluster with NGC 4729, NGC 4730 and NGC 4743.

References edit

^ ^a ^b ^c ^d ^e ^f ^g "NASA/IPAC Extragalactic Database". Results for Centaurus Cluster. Retrieved 2006-10-19.
^ ^a ^b Abell, George O.; Corwin, Harold G. Jr.; Olowin, Ronald P. (May 1989). "A catalog of rich clusters of galaxies". Astrophysical Journal Supplement Series. 70 (May 1989): 1–138. Bibcode:1989ApJS...70....1A. doi:10.1086/191333. ISSN 0067-0049.
^ ^a ^b Lucey J. R.; Currie M. J.; Dickens R. J. (1986). "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.
^ 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.