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42 relations: Absolute magnitude, American Association of Variable Star Observers, Astrophysical maser, Cambridge University Press, Cygnus (constellation), Cygnus OB2, Effective temperature, Emily Levesque, Gerry Neugebauer, Hydroxy group, Hypergiant, IK Tauri, Jupiter, Kelvin, Konkoly Observatory, Light-year, List of largest stars, Luminosity, Milky Way, Minute and second of arc, Mira variable, Monthly Notices of the Royal Astronomical Society, Nebula, Oxygen, ProQuest, RAFGL, Red supergiant star, Robert B. Leighton, Saturn, Semiregular variable star, Solar System, Stefan–Boltzmann law, Stellar evolution, Stellar parallax, Sun, The Astrophysical Journal, Two-Micron Sky Survey, Universal Publishers (United States), Variable star designation, VY Canis Majoris, Water, 2MASS.
Absolute magnitude
Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.
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American Association of Variable Star Observers
Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.
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Astrophysical maser
An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum.
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Cambridge University Press
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
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Cygnus (constellation)
Cygnus is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan.
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Cygnus OB2
Cygnus OB2 is an OB association that is home to some of the most massive and most luminous stars known, including suspected Luminous blue variable Cyg OB2 #12.
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Effective temperature
The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.
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Emily Levesque
Emily Levesque is an American astronomer and Assistant Professor in the Department of Astronomy at the University of Washington.
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Gerry Neugebauer
Gerhart "Gerry" Neugebauer (3 September 1932 – 26 September 2014) was an American astronomer known for his pioneering work in infrared astronomy.
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Hydroxy group
A hydroxy or hydroxyl group is the entity with the formula OH.
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Hypergiant
A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.
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IK Tauri
IK Tauri is a Mira variable star located about from the Sun in the zodiac constellation of Taurus.
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Jupiter
Jupiter is the fifth planet from the Sun and the largest in the Solar System.
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Kelvin
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
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Konkoly Observatory
Konkoly Observatory (Konkoly Obszervatórium; obs. code: 053) is an astronomical observatory owned and operated by the Hungarian Academy of Sciences, located in Budapest, Hungary.
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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 largest stars
Below is an ordered list of the largest stars currently known by radius.
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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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Milky Way
The Milky Way is the galaxy that contains our Solar System.
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Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
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Mira variable
Mira variables ("Mira", Latin, adj. - feminine form of adjective "wonderful"), named for the prototype star Mira, are a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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Nebula
A nebula (Latin for "cloud" or "fog"; pl. nebulae, nebulæ, or nebulas) is an interstellar cloud of dust, hydrogen, helium and other ionized gases.
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Oxygen
Oxygen is a chemical element with symbol O and atomic number 8.
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ProQuest
ProQuest LLC is an Ann Arbor, Michigan-based global information-content and technology company, founded in 1938 as University Microfilms by Eugene B. Power.
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RAFGL
RAFGL, the "Revised Air Force Geophysical Laboratory" (S.D. Price and T.L. Murdock, 1983), is a four-color infrared sky survey catalog.
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Red supergiant star
Red supergiants are stars with a supergiant luminosity class (Yerkes class I) of spectral type K or M. They are the largest stars in the universe in terms of volume, although they are not the most massive or luminous.
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Robert B. Leighton
Robert Benjamin Leighton (September 10, 1919 – March 9, 1997) was a prominent American experimental physicist who spent his professional career at the California Institute of Technology (Caltech).
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Saturn
Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.
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Semiregular variable star
Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities.
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Solar System
The Solar SystemCapitalization of the name varies.
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Stefan–Boltzmann law
The Stefan–Boltzmann law describes the power radiated from a black body in terms of its temperature.
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Stellar evolution
Stellar evolution is the process by which a star changes over the course of time.
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Stellar parallax
Stellar parallax is the apparent shift of position of any nearby star (or other object) against the background of distant objects.
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Sun
The Sun is the star at the center of the Solar System.
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The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
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Two-Micron Sky Survey
Two-Micron Sky Survey, or IRC, or Caltech infrared catalog is the astronomical catalogue of the infrared sources published in the 1969 by Neugebauer and Leighton.
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Universal Publishers (United States)
Universal Publishers is the parent publishing company of three non-fiction book imprints specializing in nonfiction, how-to, technical and academic titles (Universal-Publishers, BrownWalker Press & Dissertation.com).
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Variable star designation
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
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VY Canis Majoris
VY Canis Majoris (VY CMa) is an extreme pulsating red hypergiant (or supergiant) star located in the constellation Canis Major.
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Water
Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.
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2MASS
The Two Micron All-Sky Survey, or 2MASS, was an astronomical survey of the whole sky in the infrared spectrum and one of the most ambitious such projects.
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Redirects here:
NML Cyg, V1489 Cyg, V1489 Cygni.
References
[1] https://en.wikipedia.org/wiki/NML_Cygni
