Virgo cluster


Also found in: Wikipedia.

Virgo cluster

A giant irregular cluster of galaxies lying near the north galactic pole in the constellation Virgo. It is the nearest large cluster: its distance is currently estimated as 15 megaparsecs. Some 2500 galaxies have been observed of which about 75% are spirals, the remainder being mainly ellipticals with a few irregulars. Its second-brightest member, the giant elliptical galaxy M87, is both a radio source (Virgo A) and an X-ray source (Virgo X-1). The X-ray halo around M87 is taking part in a weak cooling flow of around 10 solar masses a year. A second large elliptical galaxy in Virgo, M86, is also an X-ray source, with the X-ray emission forming a plume directed away from the center of the galaxy. This is due to the hot gas being stripped from the galaxy by ram pressure as it falls into the cluster. The Virgo cluster is the center of the Local Supercluster, which exerts a significant gravitational pull on the Local Group of galaxies, reducing the measured recession velocity of the Virgo cluster by some 250 km s–1 (to about 1000 km s–1).

Virgo cluster

[′vər·gō ‚kləs·tər]
(astronomy)
A cluster of galaxies which is the nearest to the galaxy that includes the sun; the cluster is centered in the constellation Virgo and is about 1.6 × 107 light-years (1.51 × 1023 m) from earth.
References in periodicals archive ?
At a distance of 165 million light-years, the Hydra I Cluster (also known as Abell 1060) is one of the nearest rich galaxy clusters beyond the Virgo Cluster.
The main gravitational attractor in the mapped area is the Virgo Cluster, with 600 trillion times the mass of the Sun, 50 million light years from us.
According to NASA, these galaxies, which are located in the Virgo cluster - a gravitationally bound cluster of nearly 2,000 galaxies - provide a glimpse of what the Milky Way would look like to observers looking at it from the outside.
These telescopes will collect radio waves emitting from Sgr A, as well as the neighbouring galaxy Messier 87, a huge elliptical galaxy in the nearby Virgo Cluster, and stitch them together into visual images.
Astronomer Christopher Mihos of Case Western Reserve University in Cleveland and colleagues, reporting in 2015 in Astrophysical Journal Letters, found three more in the Virgo cluster, a more sparsely populated but closer gathering of galaxies that's a mere 54 million light-years away.
M87 resides at the center of the neighboring Virgo cluster of roughly 2,000 galaxies, located 50 million light years away.
Callum finished the Sky Notes with a few deepsky images, including Hoag's Object, Abell 2218 and the Virgo cluster.
Organized by measurement techniques appropriate for distance ranges, the work covers processes for examining the solar system, the Milky Way and the Local Group, the Virgo Cluster, and the space between nearby galaxy clusters and cosmological distances.
This happened in the M100 galaxy in the Virgo cluster, and no, I am not making it up.
Consequently, "Hubble 3D" comes as close as any film to reproducing the curious, cosmic sensation of floating through outer space; with the bonus of the telescope's infrared camera and ultrasharp focus, pic affords tremendous views of everything from the young stars emerging from the Orion Nebula to a black hole in the more distant Virgo Cluster.
A lot of controversy over the universeAAEs distance scale centered on the Virgo cluster.
The Virgo Cluster, whose rich core is 50 to 60 million light-years away, is just a portion of the Virgo Galaxy Supercluster, a vast cosmic archipelago with thousands of members.