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18 relations: Accretion disk, Apparent magnitude, Binary star, Cataclysmic variable star, Cosmic distance ladder, Dwarf nova, Hubble Space Telescope, Luminosity, Nova, SS Cygni, Superhump, Temperature, U Geminorum, V band, Viscosity, White dwarf, WZ Sagittae, Z Camelopardalis.
Accretion disk
An accretion disk is a structure (often a circumstellar disk) formed by diffused material in orbital motion around a massive central body.
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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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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Cataclysmic variable star
Cataclysmic variable stars (CV) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent state.
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Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects.
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Dwarf nova
A U Geminorum-type variable star, or dwarf nova (pl. novae) is a type of cataclysmic variable star consisting of a close binary star system in which one of the components is a white dwarf that accretes matter from its companion.
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Hubble Space Telescope
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
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Luminosity
In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.
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Nova
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
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SS Cygni
SS Cygni is a variable star in the northern constellation Cygnus (the Swan).
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Superhump
In astronomy, a superhump is a periodic brightening in a cataclysmic variable star system, in which the period is a few percent longer than the orbital period of the system.
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Temperature
Temperature is a physical quantity expressing hot and cold.
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U Geminorum
U Geminorum (U Gem), in the constellation Gemini, is an archetypal example of a dwarf nova.
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V band
The V band ("vee-band") is a standard designation by the Institute of Electrical and Electronic Engineers (IEEE) for a band of frequencies in the microwave portion of the electromagnetic spectrum ranging from 40 to 75 gigahertz (GHz).
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Viscosity
The viscosity of a fluid is the measure of its resistance to gradual deformation by shear stress or tensile stress.
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White dwarf
A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.
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WZ Sagittae
WZ Sagittae (WZ Sge) is a cataclysmic dwarf nova star system in the constellation Sagitta.
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Z Camelopardalis
Z Camelopardalis (Z Cam) is a cataclysmic variable starSIMBAD, (accessed 2012-03-20) in the constellation of Camelopardalis.
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Dwarf Nova, Dwarf novae, Dwarf novas, ER Ursae Majoris variable, SS Cygni star, SS Cygni variable, SU Ursae Majoris, SU Ursae Majoris star, SU Ursae Majoris stars, SU Ursae Majoris variable, U Geminorum Star, U Geminorum star, U Geminorum variable, WZ Sagittae variable, Z Camelopardalis star, Z Camelopardalis variable, Z Camelopardalis variable star, Z Camelopardalis variable stars.
