The Unified Astronomy Thesaurus

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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.
Comas original
unstar this property dcterms modified equal to or less than 2018-09-07T15:36:55Zequal to or more than 2018-09-07T15:36:55Z
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Comets original
star this property definition The nebulous envelope around the nucleus of a comet, formed when the comet passes close to the Sun.
Chandrasekhar limit original
unstar this property dcterms modified equal to or less than 2018-09-10T16:13:57Zequal to or more than 2018-09-10T16:13:57Z
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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.
L galaxies original
unstar this property dcterms modified equal to or less than 2016-11-01T17:59:43Zequal to or more than 2016-11-01T17:59:43Z
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Low surface brightness galaxies original
star this property definition In Morgan's classification, an elongated galaxy of low surface brightness. --Glossary of Astronomy and Astrophysics, J. Hopkins, University of Chicago Press (1976)
Xenobiology original
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Astrobiology original
star this property definition "the study of synthesizing and manipulating biological devices and systems" - Wikipedia
Astrobiology original
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Interdisciplinary astronomy original
star this property definition "The study of life throughout the Universe, also known as exobiology." - An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri.
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Xenobiology original
Biomarkers original
DQ Herculis stars original
unstar this property dcterms modified equal to or less than 2018-09-13T20:20:25Zequal to or more than 2018-09-13T20:20:25Z
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Novae original
star this property definition "A type of cataclysmic variable binary star system with a white dwarf and a cool main-sequence secondary star." - Wikipedia
Field stars original
star this property dcterms created equal to or less than 2018-09-14T19:11:19Zequal to or more than 2018-09-14T19:11:19Z
unstar this property dcterms modified equal to or less than 2018-09-14T19:14:04Zequal to or more than 2018-09-14T19:14:04Z
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Stellar types original
star this property definition "A star that does not belong to a stellar cluster, but happens to be adjacent to it." - An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri.
Field galaxies original
unstar this property dcterms modified equal to or less than 2018-09-14T19:14:18Zequal to or more than 2018-09-14T19:14:18Z
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Galaxies original
star this property definition "A galaxy that lies in the direction of a cluster of galaxies, but is not a member of the cluster. Field galaxies are rare, less than about 5% of all galaxies." - An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri.
Absolute magnitude original
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Magnitude original
Main sequence stars original
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Stellar evolutionary types original
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Zero-age main sequence stars original
Mars original
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Inner planets original
Martian satellites original
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Natural satellites (Solar system) original
Astrophysical fluid dynamics original
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Interdisciplinary astronomy original
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Hydrodynamics original
Internal waves original
Magnetohydrodynamics original
Radiative magnetohydrodynamics original
Me stars original
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Emission line stars original
M stars original
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Me variable stars original
Me variable stars original
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Me stars original
M giant stars original
Mercury (planet) original
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Inner planets original
Astrophysical masers original
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Extragalactic astronomy original
Interstellar medium original
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Hydroxyl masers original
Megamasers original
Silicon monoxide masers original
Water masers original
Metallicity original
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Chemical abundances original
Meteorites original
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Meteoroids original
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Achondrites original
Aerolites original
Ataxites original
Chondrites original
Iron meteorites original
Micrometeorites original
Tektites original
Meteors original
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Meteoroids original
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Fireballs original
Meteor streams original
Meteor trails original
Astronomical methods original
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Observational astronomy original
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Amateur astronomy original
Astrophotography original
Computational astronomy original
Cosmic ray astronomy original
Gamma-ray astronomy original
Gravitational wave astronomy original
Ground-based astronomy original
Infrared astronomy original
Neutrino astronomy original
Observational cosmology original
Radar astronomy original
Radio astronomy original
Ultraviolet astronomy original
Visible astronomy original
Visual observation original
X-ray astronomy original
Milky Way dark matter halo original
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Milky Way Galaxy physics original
Milky Way disk original
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Milky Way Galaxy physics original
Milky Way dynamics original
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Milky Way Galaxy physics original
Milky Way evolution original
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Milky Way Galaxy physics original
Milky Way formation original
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Milky Way Galaxy physics original
Milky Way Galaxy physics original
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Galaxy physics original
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Milky Way dark matter halo original
Milky Way disk original
Milky Way dynamics original
Milky Way evolution original
Milky Way formation original
Milky Way magnetic fields original
Milky Way mass original
Milky Way rotation original
Milky Way stellar halo original
Galactic abundances original
Galactic anticenter original
Galactic bulge original
Galactic center original
Galactic winds original
Gould Belt original
Milky Way Galaxy fountains original
Solar neighborhood original
Milky Way magnetic fields original
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Milky Way Galaxy physics original
Milky Way mass original
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Milky Way Galaxy physics original
Milky Way rotation original
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Milky Way Galaxy physics original
Milky Way stellar halo original
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Milky Way Galaxy physics original
Mira variable stars original
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Emission line stars original
Late-type giant stars original
Long period variable stars original
Pulsating variable stars original
Moldavites original
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Tektites original
Radical-radical recombination original
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Recombination original
Solar mottles original
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Solar spicules original
Moving clusters original
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Star clusters original
Multi-periodic pulsation original
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Stellar pulsations original
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Double-mode pulsation original
Multi-periodic variable stars original
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Periodic variable stars original
Pulsating variable stars original
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Beta Cepheid variable stars original
Delta Scuti variable stars original
Double-mode variable stars original
PG 1159 stars original
SX Phoenicis variable stars original
ZZ Ceti stars original
Asymptotic giant branch original
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Hertzsprung Russell diagram original
Multiple mirror telescopes original
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Optical telescopes original
N-body simulations original
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Astronomical simulations original
Gravitational interaction original
N stars original
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Carbon stars original
Late-type stars original
Natural satellites (Solar system) original
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Solar system original
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Martian satellites original
Neptunian satellites original
Irregular satellites original
Jovian satellites original
Saturnian satellites original
The Moon original
Uranian satellites original
Neptune original
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Outer planets original
Neptunian satellites original
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Natural satellites (Solar system) original
Abundance ratios original
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Chemical abundances original
Neutrino oscillations original
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Nuclear astrophysics original
Particle astrophysics original
Neutron stars original
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Compact objects original
Nuclear astrophysics original
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Magnetars original
Neutron star cores original
Pulsars original
Relativistic stars original
Nova-like variable stars original
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Cataclysmic variable stars original
Stellar remnants original
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UX Ursae Majoris stars original
VY Sculpturis stars original