Shapley Supercluster

Shapley Supercluster
Shapley Supercluster
	Galaxies in the Shapley Supercluster
Observation data (Epoch J2000)
Constellation(s)	Centaurus
Right ascension	13h 25m
Declination	−30° 0′ 0″
Distance	200 Mpc (652 Mly)
Other designations
	Shapley Concentration, SCl 124
	See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

The Shapley Supercluster or Shapley Concentration (SCl 124) is the largest concentration of galaxies in our nearby universe that forms a gravitationally interacting unit, thereby pulling itself together instead of expanding with the universe. It appears as a striking overdensity in the distribution of galaxies in the constellation of Centaurus. It is 650 million light-years away (z=0.046).

^ ^a ^b Proust, Dominique; Quintana, Hernán [in Spanish]; Carrasco, Eleazar R.; Reisenegger, Andreas; Slezak, Eric; Muriel, Hernán; Dünner, Rolando; Sodré, Laerte Jr.; Drinkwater, Michael J. [in Italian]; Parker, Quentin A.; Ragone, Cinthia J. (June 2006). "The Shapley supercluster: the largest matter concentration in the local Universe" (PDF). The Messenger. 124 (124). European Southern Observatory (ESO): 30–31. Bibcode:2006Msngr.124...30P. OCLC 992894162.

[Proust,_Quintana,_Carrasco,_Reisenegger_et_al,_2006-1] Proust, Dominique; Quintana, Hernán [in Spanish]; Carrasco, Eleazar R.; Reisenegger, Andreas; Slezak, Eric; Muriel, Hernán; Dünner, Rolando; Sodré, Laerte Jr.; Drinkwater, Michael J. [in Italian]; Parker, Quentin A.; Ragone, Cinthia J. (June 2006). "The Shapley supercluster: the largest matter concentration in the local Universe" (PDF). The Messenger. 124 (124). European Southern Observatory (ESO): 30–31. Bibcode:2006Msngr.124...30P. OCLC 992894162.

[1]