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Effective radius

Index Effective radius

The effective radius (R_e) of a galaxy is the radius at which half of the total light of the system is emitted. [1]

26 relations: Abell 1201 BCG, Coma Berenices (dwarf galaxy), Crater 2 Dwarf Galaxy, Dwarf galaxy, Fundamental plane (elliptical galaxies), Gaia 1, Globular cluster, Half Light, IC 1101, Laevens 1, Leo T (dwarf galaxy), Leo V (dwarf galaxy), M60-UCD1, Messier 32, NGC 3607, NGC 4526, NGC 5866, Nuclear star cluster, Reticulum II, SAGES Legacy Unifying Globulars and GalaxieS Survey, Satellite galaxy, Segue 1, Segue 2, Terzan 7, Ursa Major II Dwarf, Weak gravitational lensing.

Abell 1201 BCG

Abell 1201 BGC is a massive elliptical galaxy residing as the brightest cluster galaxy of the Abell 1201 galaxy cluster.

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Coma Berenices (dwarf galaxy)

Coma Berenices or Com is a dwarf spheroidal galaxy situated in the Coma Berenices constellation and discovered in 2006 in data obtained by the Sloan Digital Sky Survey.

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Crater 2 Dwarf Galaxy

Crater 2 is a dwarf galaxy discovered orbiting the Milky Way, located approximately 380,000 ly from Earth.

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Dwarf galaxy

A dwarf galaxy is a small galaxy composed of about 100 million up to several billion stars, a small number compared to the Milky Way's 200–400 billion stars.

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Fundamental plane (elliptical galaxies)

The fundamental plane is a set of bivariate correlations connecting some of the properties of normal elliptical galaxies, including their radius, luminosity, mass, velocity dispersion, metallicity, surface brightness, colors, density (of luminosity, mass, or phase space), and, to a lesser degree, the shape of their radial surface brightness profiles.

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Gaia 1

Gaia 1 is a star cluster discovered in 2017 by the Gaia Space Observatory.

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Globular cluster

A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.

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Half Light

"Half light" may refer to.

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IC 1101

IC 1101 is a supergiant elliptical galaxy at the center of the Abell 2029 galaxy cluster, approximately 320 megaparsecs (1.04 billion light-years) from Earth.

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Laevens 1

Laevens 1 is a faint globular cluster in the constellation Crater that was discovered in 2014.

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Leo T (dwarf galaxy)

Leo T is a dwarf galaxy situated in the Leo constellation and discovered in 2006 in the data obtained by Sloan Digital Sky Survey.

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Leo V (dwarf galaxy)

Leo V is a dwarf spheroidal galaxy situated in the Leo constellation and discovered in 2007 in the data obtained by the Sloan Digital Sky Survey.

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M60-UCD1

M60-UCD1 is an ultracompact dwarf galaxy.

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Messier 32

Messier 32 (also known as NGC 221) is a dwarf "early-type" galaxy located about 2.65 million light-years from Earth, appearing in the constellation Andromeda.

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NGC 3607

This elliptical galaxy is part of the Leo II Group (NGC 3607 Group) of galaxies.

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NGC 4526

NGC 4526 (also listed as NGC 4560) is a lenticular galaxy located approximately 55 million light-years from the Solar System in the Virgo constellation and discovered on 13 April 1784 by William Herschel.

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NGC 5866

NGC 5866 (also called the Spindle Galaxy or Messier 102) is a relatively bright lenticular or spiral galaxy in the constellation Draco.

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Nuclear star cluster

A nuclear star cluster (NSC) or compact stellar nucleus (sometimes called young stellar nucleus) is a star cluster with high density and high luminosity near the center of mass of most galaxies.

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Reticulum II

Reticulum II (or Reticulum 2) is an old dwarf galaxy in the Local Group.

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SAGES Legacy Unifying Globulars and GalaxieS Survey

The SLUGGS (SAGES Legacy Unifying Globulars and GalaxieS) survey is an astronomical survey of 25 nearby early-type (E and S0) galaxies.

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Satellite galaxy

A satellite galaxy is a smaller companion galaxy that travels on bound orbits within the gravitational potential of a more massive and luminous host galaxy (also known as the primary galaxy).

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Segue 1

Segue 1 is a dwarf spheroidal galaxy or globular cluster situated in the Leo constellation and discovered in 2006 by Sloan Digital Sky Survey.

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Segue 2

Segue 2 is a dwarf spheroidal galaxy situated in the constellation Aries and discovered in 2009 in the data obtained by Sloan Digital Sky Survey.

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Terzan 7

Terzan 7 is a sparse and young globular cluster that is believed to have originated in the Sagittarius Dwarf Spheroidal Galaxy (Sag DEG) and is physically associated with it.

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Ursa Major II Dwarf

Ursa Major II Dwarf (UMa II dSph) is a dwarf spheroidal galaxy situated in the Ursa Major constellation and discovered in 2006 in the data obtained by the Sloan Digital Sky Survey.

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Weak gravitational lensing

While the presence of any mass bends the path of light passing near it, this effect rarely produces the giant arcs and multiple images associated with strong gravitational lensing.

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Redirects here:

Half-light radius.

References

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

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