The Unified Astronomy Thesaurus

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Population II Cepheid variable stars original
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Population II stars 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
Slow novae original
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Novae original
Open star clusters original
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Star clusters original
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O clusters original
Young star clusters original
DO stars original
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White dwarf stars original
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PG 1159 stars original
BL Herculis stars original
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Cepheid variable stars original
W Virginis variable stars original
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Cepheid 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
S Doradus stars original
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Emission line stars original
Luminous blue variable stars original
Early-type variable stars original
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Early-type stars original
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Beta Cepheid variable stars original
Luminous blue variable stars original
SX Arietis variable stars original
Helmholtz-Kelvin contraction original
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Stellar evolution original
Classification systems original
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Astronomical research original
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Galaxy classification systems original
Luminosity classification original
Stellar classification original
Stellar populations original
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Stellar astronomy original
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Population I stars original
Population II stars original
Population III stars original
Symbiotic binary stars original
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Emission line stars original
Interacting binary stars original
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Symbiotic novae original
Z Andromedae stars original
Optical double stars original
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Visual observation 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
Galaxy magnitudes original
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Magnitude original
Galaxy properties original
Yerkes classification original
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Stellar classification original
Celestial equator original
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Equatorial coordinate system original
Stellar evolutionary models original
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Astronomical research original
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Hertzsprung Russell diagram original
Stellar evolutionary tracks 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.
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.
Delta Scuti variable stars original
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Multi-periodic variable stars original
Pulsating variable stars original
Short period variable stars original