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38 relations: American Association of Variable Star Observers, Aquila (constellation), Astrophysical maser, Constellation, Eta Carinae, Hertzsprung–Russell diagram, Hubble Space Telescope, Hydroxyl radical, Hypergiant, Infrared excess, IRAS, IRAS 17163-3907, Joint Institute for VLBI in Europe, List of most luminous stars, Luminous blue variable, Maser, MERLIN, Monthly Notices of the Royal Astronomical Society, Naked eye, Parsec, Photosphere, Protoplanetary nebula, Red supergiant star, Reflection nebula, SMC 18136, Solar mass, Star, Stellar classification, Sun, Supernova, Telescope, Two-Micron Sky Survey, Variable star designation, Very-long-baseline interferometry, VV Cephei, VY Canis Majoris, Wolf–Rayet star, Yellow hypergiant.
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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Aquila (constellation)
Aquila is a constellation on the celestial equator.
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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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Constellation
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
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Eta Carinae
Eta Carinae (η Carinae, abbreviated to η Car), formerly known as Eta Argus, is a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun, located around 7,500 light-years (2,300 parsecs) distant in the constellation Carina.
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Hertzsprung–Russell diagram
The Hertzsprung–Russell diagram, abbreviated H–R diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.
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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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Hydroxyl radical
The hydroxyl radical, •OH, is the neutral form of the hydroxide ion (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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Infrared excess
An infrared excess is a measurement of an astronomical source, typically a star, that in their spectral energy distribution has a greater measured infrared flux than expected by assuming the star is a blackbody radiator.
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IRAS
The Infrared Astronomical Satellite (IRAS) was the first-ever space telescope to perform a survey of the entire night sky at infrared wavelengths.
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IRAS 17163-3907
IRAS 17163-3907, also known as Hen 3-1379, is a possible yellow hypergiant star located 13,000 light years from Earth in the constellation of Scorpius.
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Joint Institute for VLBI in Europe
The Joint Institute for VLBI ERIC (JIVE) was formed in 1993 by the European Consortium for VLBI and is the central facility of the European VLBI Network (EVN).
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List of most luminous stars
Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude).
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Luminous blue variable
Luminous blue variables (LBVs) are massive evolved stars that show unpredictable and sometimes dramatic variations in both their spectra and brightness.
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Maser
A maser (an acronym for "microwave amplification by stimulated emission of radiation") is a device that produces coherent electromagnetic waves through amplification by stimulated emission.
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MERLIN
The Multi-Element Radio Linked Interferometer Network (MERLIN) is an interferometer array of radio telescopes spread across England.
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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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Naked eye
Naked eye, also called bare eye or unaided eye, is the practice of engaging in visual perception unaided by a magnifying or light-collecting optical instrument, such as a telescope or microscope.
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Parsec
The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
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Photosphere
The photosphere is a star's outer shell from which light is radiated.
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Protoplanetary nebula
A protoplanetary nebula or preplanetary nebula (PPN) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB) phase and the subsequent planetary nebula (PN) phase.
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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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Reflection nebula
In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars.
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SMC 18136
SMC 18136, also known as PMMR 37, is a M-type supergiant star with a temperature of 3,575 K and a radial velocity of 185.7 km/s located in the Small Magellanic Cloud.
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Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
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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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Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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Sun
The Sun is the star at the center of the Solar System.
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Supernova
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
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Telescope
A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).
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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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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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Very-long-baseline interferometry
Very-long-baseline interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy.
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VV Cephei
VV Cephei, also known as HD 208816, is an eclipsing binary star system located in the constellation Cepheus, approximately 5,000 light years from Earth.
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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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Wolf–Rayet star
Wolf–Rayet stars, often abbreviated as WR stars, are a rare heterogeneous set of stars with unusual spectra showing prominent broad emission lines of highly ionised helium and nitrogen or carbon.
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Yellow hypergiant
A yellow hypergiant is a massive star with an extended atmosphere, a spectral class from A to K, and an initial mass of about 20–60 solar masses but having lost as much as half that mass.
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References
[1] https://en.wikipedia.org/wiki/IRC_%2B10420
