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Galaxy groups and clusters

Index Galaxy groups and clusters

Galaxy groups and clusters are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation. [1]

58 relations: Arcminute Microkelvin Imager, Astronomical object, Astronomical radio source, Astronomy, Bullet Cluster, Calcium-rich supernovae, Carolin Crawford, Corvus (constellation), Dark energy, Dark Energy Survey, Dorado Group, Edwin Francis Carpenter, El Gordo (galaxy cluster), Elizabeth Scott (mathematician), Galaxy cluster, Galaxy group, Gravity, Group, Heidelberg University Faculty of Physics and Astronomy, Hercules Cluster, Index of physics articles (G), JKCS 041, Light-year, List of galaxies, List of galaxies named after people, Local Void, Location of Earth, M74 Group, M94 Group, Marie Machacek, Mass segregation (astronomy), Metagalaxy, Neutrino, NGC 3783, NGC 3982, NGC 4038 Group, NGC 4244, NGC 4449, NGC 6027b, NGC 925, Outer space, Outer Space Men, Outline of galaxies, Physical cosmology, Radio galaxy, Robert McMahan, Ryle Telescope, Singular isothermal sphere profile, Stellar drift, Structure formation, ..., Supercluster, The Whole Shebang: A State-of-the-Universe(s) Report, Theoretical astronomy, Universe, Virgo Cluster, Virgo Supercluster, Visible Multi Object Spectrograph, 3C 401. Expand index (8 more) »

Arcminute Microkelvin Imager

The Arcminute Microkelvin Imager (AMI) consists of a pair of interferometric radio telescopes - the Small and Large Arrays - located at the Mullard Radio Astronomy Observatory near Cambridge.

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Astronomical object

An astronomical object or celestial object is a naturally occurring physical entity, association, or structure that exists in the observable universe.

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Astronomical radio source

Astronomical radio sources are objects in outer space that emit strong radio waves.

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Astronomy

Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.

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Bullet Cluster

The Bullet Cluster (1E 0657-558) consists of two colliding clusters of galaxies.

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Calcium-rich supernovae

Calcium-rich supernovae (or Calcium-rich transients, Ca-rich SNe) are a subclass of supernovae that, in contrast to more well-known traditional supernova classes, are fainter and produce unusually large amounts of calcium.

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Carolin Crawford

Carolin Susan Crawford is a British communicator of science, astrophysicist researcher, lecturer and Public Astronomer based at the Institute of Astronomy and Emmanuel College, Cambridge.

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Corvus (constellation)

Corvus is a small constellation in the Southern Celestial Hemisphere.

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Dark energy

In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe.

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Dark Energy Survey

The Dark Energy Survey (DES) is a visible and near-infrared survey that aims to probe the dynamics of the expansion of the Universe and the growth of large-scale structure.

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Dorado Group

The Dorado Group is a loose concentration of galaxies containing both spirals and ellipticals.

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Edwin Francis Carpenter

Edwin Francis Carpenter (November 1, 1898 – February 11, 1963) was an American astronomer.

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El Gordo (galaxy cluster)

El Gordo (lit. The Fat One) (ACT-CL J0102-4915 or SPT-CL J0102-4915) is the largest distant galaxy cluster observed at its distance or beyond, as of 2011.

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Elizabeth Scott (mathematician)

Elizabeth Leonard Scott (November 23, 1917 – December 20, 1988) was an American mathematician specializing in statistics.

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Galaxy cluster

A galaxy cluster, or cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity with typical masses ranging from 1014–1015 solar masses.

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Galaxy group

A galaxy group or group of galaxies (GrG) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 1010 times the luminosity of the Sun); collections of galaxies larger than groups that are first-order clustering are called galaxy clusters.

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Gravity

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward (or gravitate toward) one another.

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Group

A Group is a number of people or things that are located, gathered, or classed together.

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Heidelberg University Faculty of Physics and Astronomy

The Faculty of Physics and Astronomy is one of twelve faculties at the University of Heidelberg.

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Hercules Cluster

The Hercules Cluster (Abell 2151) is a cluster of about 200 galaxies some 500 million light-years distant in the constellation Hercules.

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Index of physics articles (G)

The index of physics articles is split into multiple pages due to its size.

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JKCS 041

JKCS 041 is a group of galaxies with the distinction of being the farthest away galaxy group from Earth ever observed, as of 2009.

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Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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List of galaxies

The following is a list of notable galaxies.

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List of galaxies named after people

A small number of galaxies or galaxy groups have been named after individual people.

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Local Void

The Local Void is a vast, empty region of space, lying adjacent to the Local Group.

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Location of Earth

Knowledge of the location of Earth has been shaped by 400 years of telescopic observations, and has expanded radically in the last century.

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M74 Group

The M74 Group (also known as the NGC 628 Group) is a small group of galaxies in the constellation Pisces.

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M94 Group

The M94 Group (Canes Venatici I Group) is a loose, extended group of galaxies located about 13 million light-years away in the constellations Canes Venatici and Coma Berenices.

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Marie Machacek

Marie E. Machacek is an astrophysicist conducting research in the High Energy Astrophysics Division of the Smithsonian Astrophysical Observatory.

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Mass segregation (astronomy)

In astronomy, dynamical mass segregation is the process by which heavier members of a gravitationally bound system, such as a star cluster or cluster of galaxies, tend to move toward the center, while lighter members tend to move farther away from the center.

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Metagalaxy

Metagalaxy is a term referring to a large-scale galactic system.

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Neutrino

A neutrino (denoted by the Greek letter ν) is a fermion (an elementary particle with half-integer spin) that interacts only via the weak subatomic force and gravity.

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NGC 3783

NGC 3783 is a barred spiral galaxy located about 30 million light years away in the constellation Centaurus.

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NGC 3982

NGC 3982 is an intermediate spiral galaxy approximately 68 million light-years away in the constellation Ursa Major.

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NGC 4038 Group

The NGC 4038 Group is a group of galaxies in the constellations Corvus and Crater.

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NGC 4244

NGC 4244, also Caldwell 26, is an edge-on loose Spiral galaxy and Caldwell object in the constellation Canes Venatici.

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NGC 4449

NGC 4449 is an irregular Magellanic type galaxy in the constellation Canes Venatici, being located about 12 million light-years away.

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NGC 6027b

NGC 6027b is an interacting lenticular galaxy that is part of Seyfert's Sextet, a compact group of galaxies currently in the process of colliding and merging, which is located in the constellation Serpens.

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NGC 925

NGC 925 is a barred spiral galaxy located about 30 million light-years away in the constellation Triangulum.

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Outer space

Outer space, or just space, is the expanse that exists beyond the Earth and between celestial bodies.

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Outer Space Men

The Outer Space Men – also known as the Colorform Aliens – is a group of seven "bendy" action figures (similar to Mattel's Major Matt Mason) produced by the Colorforms Company in 1968, they were designed by toy inventor Mel Birnkrant.

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Outline of galaxies

The following outline is provided as an overview of and topical guide to galaxies: Galaxies – gravitationally bound systems of stars, stellar remnants, interstellar gas, dust, and dark matter.

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Physical cosmology

Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate.

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Radio galaxy

Radio galaxies and their relatives, radio-loud quasars and blazars, are types of active galaxy that are very luminous at radio wavelengths, with luminosities up to 1039 W between 10 MHz and 100 GHz.

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Robert McMahan

Robert K. McMahan (born 1961) is an American physicist, professor, and entrepreneur who is the seventh and current president of Kettering University.

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Ryle Telescope

The Ryle Telescope (named after Martin Ryle, and formerly known as the 5-km Array) was a linear east-west radio telescope array at the Mullard Radio Astronomy Observatory.

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Singular isothermal sphere profile

The singular isothermal sphere (SIS) profile is the simplest parameterization of the spatial distribution of matter in an astronomical system (e.g. galaxies, clusters of galaxies, etc.).

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Stellar drift

Stellar drift, or the motion of stars, is a necessary result of the lack of an absolute reference frame in special relativity.

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Structure formation

In physical cosmology, structure formation is the formation of galaxies, galaxy clusters and larger structures from small early density fluctuations.

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Supercluster

A supercluster is a large group of smaller galaxy clusters or galaxy groups; it is among the largest-known structures of the cosmos.

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The Whole Shebang: A State-of-the-Universe(s) Report

The Whole Shebang: A State-of-the-universe(s) Report is a 1997 science book by author Timothy Ferris.

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Theoretical astronomy

Theoretical astronomy is the use of the analytical models of physics and chemistry to describe astronomical objects and astronomical phenomena.

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Universe

The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.

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Virgo Cluster

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.

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Virgo Supercluster

The Virgo Supercluster (Virgo SC) or the Local Supercluster (LSC or LS) is a mass concentration of galaxies containing the Virgo Cluster and Local Group, which in turn contains the Milky Way and Andromeda galaxies.

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Visible Multi Object Spectrograph

The Visible Multi-Object Spectrograph (VIMOS) is a wide field imager and a multi-object spectrograph installed at the European Southern Observatory's Very Large Telescope (VLT), in Chile.

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3C 401

3C 401 is a powerful radio galaxy located in the constellation Draco.

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Redirects here:

Cloud of galaxies, Clouds of galaxies, Galaxy cloud, Galaxy clouds, Galaxy cluster cloud, Groups and clusters, Physical group.

References

[1] https://en.wikipedia.org/wiki/Galaxy_groups_and_clusters

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