The Unified Astronomy Thesaurus

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Elliptical orbits original
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Orbital elements original
Orbital motion original
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Major axis original
Minor axis original
Semimajor axis original
Semiminor axis original
RRab variable stars original
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RR Lyrae variable stars original
RRc variable stars original
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RR Lyrae variable stars original
RR Lyrae variable stars original
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Pulsating variable stars original
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RRab variable stars original
RRc variable stars original
RRd variable stars original
Delta Scuti variable stars original
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Multi-periodic variable stars original
Pulsating variable stars original
Short period variable stars original
W Virginis variable stars original
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Cepheid variable stars original
Schonberg-Chandrasekhar limit original
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Gravitational collapse original
star this property definition This represents the maximum fraction of a star's mass that can be contained within an isothermal core while still supporting the rest of the star in hydrostatic equilibrium. Once the mass of an isothermal helium core exceeds this limit, the corse collapses and the star evolve rapidly. The limit varies depending on the star.
Population II Cepheid variable stars original
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Population II stars original
Type II supernovae original
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Core-collapse supernovae original
Chandrasekhar limit original
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Gravitational collapse original
star this property definition The maximum mass limit for a white dwarf star, ~1.44 solar masses. White dwarf stars in a binary system accreting mass from a companion will collapse in a Type II supernova once this limit is exceeded.
Optical double stars original
unstar this property dcterms modified equal to or less than 2018-09-07T22:57:38Zequal to or more than 2018-09-07T22:57:38Z
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Visual observation original
Celestial equator original
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Equatorial coordinate system original
Yerkes classification original
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Stellar classification original
Galaxy magnitudes original
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Magnitude original
Galaxy properties original
Magnitude original
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Astrometry original
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Galaxy magnitudes original
Absolute magnitude original
Apparent magnitude original
Integrated magnitude original
Light curve classification original
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Time series analysis original
Light curves original
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Photometry original
Stellar E coronal regions original
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Stellar coronae original
Stellar F coronal regions original
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Stellar coronae original
Solar spectral irradiance original
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Solar physics original
H I line emission original
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Interstellar line emission original
Galaxy clusters original
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Galactic and extragalactic astronomy original
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Abell clusters original
Bautz-Morgan type original
Coma Cluster original
High-redshift galaxy clusters original
Intracluster medium original
Perseus Cluster original
Poor galaxy clusters original
Rich galaxy clusters original
Superclusters original
Virgo Cluster original
Cosmic background radiation original
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Recombination (cosmology) original
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Cosmic microwave background radiation original
Cosmic microwave background radiation original
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Cosmic background radiation original
Cosmic noise original
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Cosmic anisotropy original
Cosmic isotropy original
Sunyaev-Zeldovich effect original
Recombination (cosmology) original
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Big Bang theory original
Early universe original
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Cosmic background radiation original