The Virgo Cluster is a cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo. Comprising approximately 1300 (and possibly up to 2000) member galaxies, the cluster forms the heart of the larger Virgo Supercluster, of which the Local Group is an outlying member. It is estimated that its mass is 1.2×1015 M☉ out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc.
Many of the brighter galaxies in this cluster, including the giant elliptical galaxy Messier 87, were discovered in the late 1770s and early 1780s and subsequently included in Charles Messier's catalogue of non-cometary fuzzy objects. Described by Messier as nebulae without stars, their true nature was not recognized until the 1920s.
The cluster subtends a maximum arc of approximately 8 degrees centered in the constellation Virgo. Many of the member galaxies of the cluster are visible with a small telescope. Its brightest member is the elliptical galaxy Messier 49, located in one subunit of the cluster.
Other articles related to "virgo cluster, virgo, cluster, clusters":
... Messier 90 is a member of the Virgo Cluster ... As a consequence of the galaxy's interaction with the intracluster medium in the Virgo Cluster, the galaxy has lost much of its interstellar medium ... severely truncated compared to similar galaxies outside the Virgo Cluster and there're even H II regions outside the galactic plane ...
... NGC 4216 (Virgo A or Cloud N), NGC 4435 (Virgo A), NGC 4438 (Virgo A), NGC 4450 (Virgo A), NGC 4526 (Virgo B), NGC 4536 (Cloud S), NGC 4567 (Virgo A), NGC 4568 (Virgo A), NGC 4651 (cluster outskirts, no ...
... off with the square of the distance from its center near the Virgo Cluster, suggesting that this cluster is not randomly located ... are concentrated in a small number of clouds (groups of galaxy clusters) ... in decreasing order of number of luminous galaxies) Canes Venatici, Virgo Cluster, Virgo II (southern extension), Leo II, Virgo III, Crater (NGC 3672), Leo I, Leo Minor (NGC 2841 ...
... Coma Berenices contains the northern portion of the Virgo cluster (also known as the Coma-Virgo cluster), which is around 60 million light years away ... It is part of the Virgo Cluster ... across, it has the largest apparent size of any galaxy in the Virgo cluster ...
Famous quotes containing the word cluster:
“the green hells of the sea
Where fallen skies and evil hues and eyeless creatures be;
On them the sea-valves cluster and the grey sea-forests curl,
Splashed with a splended sickness, the sickness of the pearl;”
—Gilbert Keith Chesterton (18741936)