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42 relations: Absolute magnitude, Andromeda Galaxy, Andromeda I, Andromeda II, Andromeda III, Andromeda IV, Andromeda IX, Andromeda V, Andromeda VIII, Andromeda X, Andromeda XI, Andromeda XIX, Andromeda XVIII, Andromeda XXI, Andromeda XXII, Apparent magnitude, Cassiopeia Dwarf, Dark matter, Dwarf galaxy, Dwarf spheroidal galaxy, Galaxy formation and evolution, Galaxy morphological classification, Infrared, Irregular galaxy, Light-year, List of nearest galaxies, Local Group, M81 Group, Mass-to-light ratio, Messier 110, Messier 32, Milky Way, NASA, NGC 147, NGC 185, Pegasus Dwarf Spheroidal Galaxy, Satellite galaxies of the Milky Way, Satellite galaxy, Spitzer Space Telescope, Star, Sun, Triangulum Galaxy.
Absolute magnitude
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
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Andromeda Galaxy
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way.
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Andromeda I
Andromeda I is a dwarf spheroidal galaxy(dSph) about 2.40 million light-years away in the constellation Andromeda.
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Andromeda II
Andromeda II (And II) is a dwarf spheroidal galaxy about 2.22 Mly away in the constellation Andromeda.
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Andromeda III
Andromeda III is a dwarf spheroidal galaxy about 2.44 million light-years away in the constellation Andromeda.
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Andromeda IV
Andromeda IV (And IV) is an isolated irregular dwarf galaxy.
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Andromeda IX
Andromeda IX (And 9) is a dwarf spheroidal satellite of the Andromeda Galaxy.
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Andromeda V
Andromeda V is a dwarf spheroidal galaxy about 2.52 Mly away in the constellation Andromeda.
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Andromeda VIII
Andromeda VIII (And VIII / 8) is a galaxy discovered in August 2003.
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Andromeda X
Andromeda X (And 10) is a dwarf spheroidal galaxy about 2.9 million light-years away from the Sun in the constellation Andromeda.
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Andromeda XI
Andromeda XI (And 11) is a dwarf spheroidal galaxy about 2.6 million light-years away from the Sun in the constellation Andromeda.
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Andromeda XIX
Andromeda XIX is a satellite galaxy of the Andromeda Galaxy (M31), a member of the Local Group, like the Milky Way Galaxy.
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Andromeda XVIII
Andromeda XVIII, discovered in 2008, is a dwarf spheroidal galaxy (has no rings, low luminosity, much dark matter, little gas or dust), which is a satellite of the Andromeda Galaxy (M31).
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Andromeda XXI
Andromeda XXI (And 21, And XXI) is a moderately bright dwarf spheroidal galaxy about away from the Sun in the constellation Andromeda.
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Andromeda XXII
Andromeda XXII (Pisces VI, Triangulum I) is a low surface brightness dwarf spheroidal galaxy about away from the Sun in the constellation Pisces, of the Local Group.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Cassiopeia Dwarf
The Cassiopeia Dwarf (also known as Andromeda VII) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia.
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Dark matter
Dark matter is a theorized form of matter that is thought to account for approximately 80% of the matter in the universe, and about a quarter of its total energy density.
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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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Dwarf spheroidal galaxy
A dwarf spheroidal galaxy (dSph) is a term in astronomy applied to small, low-luminosity galaxies with very little dust and an older stellar population.
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Galaxy formation and evolution
The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies change over time, and the processes that have generated the variety of structures observed in nearby galaxies.
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Galaxy morphological classification
Galaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance.
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Infrared
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
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Irregular galaxy
An irregular galaxy is a galaxy that does not have a distinct regular shape, unlike a spiral or an elliptical galaxy.
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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 nearest galaxies
This is a list of known galaxies within 3.59 megaparsecs (11.7 million light-years) of the Solar System, in ascending order of distance.
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Local Group
The Local Group is the galaxy group that includes the Milky Way.
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M81 Group
The M81 Group is a galaxy group in the constellations Ursa Major and Camelopardalis that includes the galaxies Messier 81 and Messier 82, as well as several other galaxies with high apparent brightnesses.
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Mass-to-light ratio
In astrophysics and physical cosmology the mass to light ratio, normally designated with the Greek upsilon symbol \Upsilon, is the quotient between the total mass of a spatial volume (typically on the scales of a galaxy or a cluster) and its luminosity.
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Messier 110
Messier 110, also known as NGC 205, is a dwarf elliptical galaxy that is a satellite of the Andromeda 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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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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NASA
The National Aeronautics and Space Administration (NASA) is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research.
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NGC 147
NGC 147 (also known as DDO3 or Caldwell 17) is a dwarf spheroidal galaxy about 2.58 Mly away in the constellation Cassiopeia.
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NGC 185
NGC 185 (also known as Caldwell 18) is a dwarf spheroidal galaxy located 2.08 million light-years from Earth, appearing in the constellation Cassiopeia.
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Pegasus Dwarf Spheroidal Galaxy
The Pegasus Dwarf Spheroidal (also known as Andromeda VI or Peg dSph for short) is a dwarf spheroidal galaxy about 2.7 million light-years away in the constellation Pegasus.
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Satellite galaxies of the Milky Way
The Milky Way has several smaller galaxies gravitationally bound to it, as part of the Milky Way subgroup, which is part of the local galaxy cluster, the Local Group.
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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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Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space telescope launched in 2003 and still operating as of 2018.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Sun
The Sun is the star at the center of the Solar System.
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Triangulum Galaxy
The Triangulum Galaxy is a spiral galaxy approximately 3 million light-years (ly) from Earth in the constellation Triangulum.
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Redirects here:
Andromeda Galaxy's satellite galaxies, Andromeda Subgroup, Andromeda XII, Andromeda XIII, Andromeda XV, Andromeda XVI, Andromeda subroup, Andromeda's Satellite galaxies, Andromeda's natural satellites, Andromeda's satellite galaxies, M31 Subgroup, Satellite galaxies of Andromeda.
References
[1] https://en.wikipedia.org/wiki/List_of_Andromeda's_satellite_galaxies
