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23 relations: AM Canum Venaticorum star, Asymptotic giant branch, Austin, Texas, Chandrasekhar limit, Chemical element, Compact star, Daniel M. Popper, Gravitational wave, Hydrogen, Hydrogen-deficient star, McDonald Observatory, Molecular cloud, Monthly Notices of the Royal Astronomical Society, PG 1159 star, PV Telescopii, R Coronae Borealis, Stellar classification, Stellar evolution, Supergiant star, United States, Universe, White dwarf, Wolf–Rayet star.
AM Canum Venaticorum star
An AM CVn star, or AM Canum Venaticorum star, is a rare type of cataclysmic variable star named after their type star, AM Canum Venaticorum.
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Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
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Austin, Texas
Austin is the capital of the U.S. state of Texas and the seat of Travis County, with portions extending into Hays and Williamson counties.
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Chandrasekhar limit
The Chandrasekhar limit is the maximum mass of a stable white dwarf star.
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Chemical element
A chemical element is a species of atoms having the same number of protons in their atomic nuclei (that is, the same atomic number, or Z).
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Compact star
In astronomy, the term "compact star" (or "compact object") refers collectively to white dwarfs, neutron stars, and black holes.
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Daniel M. Popper
Daniel M. Popper (August 17, 1913 – September 9, 1999) was an American astrophysicist.
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Gravitational wave
Gravitational waves are the disturbance in the fabric ("curvature") of spacetime generated by accelerated masses and propagate as waves outward from their source at the speed of light.
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Hydrogen-deficient star
A hydrogen-deficient star is a type of star that has little or no hydrogen in its atmosphere.
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McDonald Observatory
The McDonald Observatory is an astronomical observatory located near the unincorporated community of Fort Davis in Jeff Davis County, Texas, United States.
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Molecular cloud
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit the formation of molecules, most commonly molecular hydrogen (H2).
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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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PG 1159 star
A PG 1159 star, often also called a pre-degenerate, is a star with a hydrogen-deficient atmosphere that is in transition between being the central star of a planetary nebula and being a hot white dwarf.
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PV Telescopii
PV Telescopii (also known as HD 168476) is a class B-type (blue) supergiant extreme helium star in the constellation Telescopium.
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R Coronae Borealis
R Coronae Borealis is a peculiar low-mass yellow supergiant star in the constellation of Corona Borealis.
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Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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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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Supergiant star
Supergiants are among the most massive and most luminous stars.
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United States
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
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Universe
The Universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy.
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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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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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References
[1] https://en.wikipedia.org/wiki/Extreme_helium_star
