The Virgo Cluster is large a Galaxy cluster near to us, with approximately 15-22 Mpc (50-70 million Al). He was discovered by Charles Messier in 1781 which charted a great number of its most important galaxies, in particular the giant galaxy M87.
This cluster is in the center of the local Superamas to which belonged the local Groupe where is our Galaxy. It is located in the constellation of the Virgin and its angular diameter is of approximately 8 degrees. It comprises 1300-2000 roughly galaxies, of which much is visible with small a Télescope. The distance specifies separating us from the cluster is badly known; the best current estimates, based on the Céphéide S by using the Space telescope Hubble, give an average distance from approximately 20 Mpc.
The cluster is an irregular aggregate of at least three under-clusters centered on the galaxies M87, M86 and M49. Most important that is centered on M87, with an approximate mass of 1014 solar masses, which is approximately an order of magnitude higher than the two others.
The cluster is a heterogeneous mixture of elliptic spiral galaxies and . Currently, one supposes that the spiral galaxies are distributed in a lengthened filament, approximately 4 times longer than broad, and who extends since the Galaxy until the Nuage W.
The following galaxies are in the Virgo Cluster: M49, M58, M59, M60, M61, M84, M85, M86, M87, M88, M89, M90, M91, M98, M99, and M100
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