The Unified Astronomy Thesaurus

Search Results

Schonberg-Chandrasekhar limit original
dcterms created equal to or less than 2018-09-10T16:07:43Zequal to or more than 2018-09-10T16:07:43Z
dcterms modified equal to or less than 2018-09-11T18:40:36Zequal to or more than 2018-09-11T18:40:36Z
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Gravitational collapse original
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
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
definition The nebulous envelope around the nucleus of a comet, formed when the comet passes close to the Sun.
Chandrasekhar limit original
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
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
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
definition In Morgan's classification, an elongated galaxy of low surface brightness. --Glossary of Astronomy and Astrophysics, J. Hopkins, University of Chicago Press (1976)
DQ Herculis stars original
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
definition "A type of cataclysmic variable binary star system with a white dwarf and a cool main-sequence secondary star." - Wikipedia
Field stars original
dcterms created equal to or less than 2018-09-14T19:11:19Zequal to or more than 2018-09-14T19:11:19Z
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
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
dcterms modified remove maximum value filterequal to or more than 2018-09-14T19:14:18Z
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Galaxies original
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
dcterms modified equal to or less than 2018-08-17T17:24:59Zequal to or more than 2018-08-17T17:24:59Z
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Magnitude original
Main sequence stars original
dcterms modified equal to or less than 2018-09-14T15:23:49Zequal to or more than 2018-09-14T15:23:49Z
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Stellar evolutionary types original
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Zero-age main sequence stars original
Mars original
dcterms modified equal to or less than 2018-08-30T21:26:45Zequal to or more than 2018-08-30T21:26:45Z
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Inner planets original
Martian satellites original
dcterms modified equal to or less than 2018-08-30T21:26:45Zequal to or more than 2018-08-30T21:26:45Z
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Natural satellites (Solar system) original
Astrophysical fluid dynamics original
dcterms modified equal to or less than 2018-08-27T19:37:19Zequal to or more than 2018-08-27T19:37:19Z
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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
dcterms modified equal to or less than 2018-09-14T15:27:48Zequal to or more than 2018-09-14T15:27:48Z
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Me stars original
M giant stars original
Mercury (planet) original
dcterms modified equal to or less than 2018-08-29T14:51:36Zequal to or more than 2018-08-29T14:51:36Z
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Inner planets original
Astrophysical masers original
dcterms modified equal to or less than 2018-09-14T15:29:50Zequal to or more than 2018-09-14T15:29:50Z
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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
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
dcterms modified equal to or less than 2018-08-31T20:23:26Zequal to or more than 2018-08-31T20:23:26Z
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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
dcterms modified equal to or less than 2018-08-27T21:47:07Zequal to or more than 2018-08-27T21:47:07Z
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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
dcterms modified equal to or less than 2018-08-31T20:22:25Zequal to or more than 2018-08-31T20:22:25Z
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Milky Way Galaxy physics original
Milky Way rotation original
dcterms modified equal to or less than 2018-08-31T20:22:14Zequal to or more than 2018-08-31T20:22:14Z
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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
dcterms modified equal to or less than 2018-09-14T15:27:48Zequal to or more than 2018-09-14T15:27:48Z
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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
Solar mottles original
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Solar spicules original
Moving clusters original
dcterms modified equal to or less than 2018-09-13T14:57:28Zequal to or more than 2018-09-13T14:57:28Z
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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
dcterms modified equal to or less than 2018-09-13T21:08:28Zequal to or more than 2018-09-13T21:08:28Z
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Hertzsprung Russell diagram original
Multiple mirror telescopes original
dcterms modified equal to or less than 2018-08-17T16:38:16Zequal to or more than 2018-08-17T16:38:16Z
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Optical telescopes original
N-body simulations original
dcterms modified equal to or less than 2018-08-27T19:24:15Zequal to or more than 2018-08-27T19:24:15Z
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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
dcterms modified equal to or less than 2018-08-30T21:32:06Zequal to or more than 2018-08-30T21:32:06Z
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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
dcterms modified equal to or less than 2018-08-30T21:26:36Zequal to or more than 2018-08-30T21:26:36Z
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Natural satellites (Solar system) original
Abundance ratios original
dcterms modified equal to or less than 2018-08-27T21:45:46Zequal to or more than 2018-08-27T21:45:46Z
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Chemical abundances original
Neutrino oscillations original
dcterms modified equal to or less than 2017-01-26T20:07:36Zequal to or more than 2017-01-26T20:07:36Z
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Nuclear astrophysics original
Particle astrophysics original
Neutron stars original
dcterms modified equal to or less than 2018-09-13T15:23:22Zequal to or more than 2018-09-13T15:23:22Z
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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
Novae original
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Cataclysmic variable stars original
Stellar remnants original
Stellar types original
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DQ Herculis stars original
Classical novae original
Dwarf novae original
Fast novae original
Recurrent novae original
Slow novae original
Symbiotic novae original
X-ray novae original
O subgiant stars original
dcterms created equal to or less than 2016-11-02T18:47:41Zequal to or more than 2016-11-02T18:47:41Z
dcterms modified equal to or less than 2018-02-06T18:12:32Zequal to or more than 2018-02-06T18:12:32Z
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O stars original
Subgiant stars original
O dwarf stars original
dcterms modified equal to or less than 2018-09-13T17:05:48Zequal to or more than 2018-09-13T17:05:48Z
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Dwarf stars original
O stars original
O giant stars original
dcterms modified equal to or less than 2018-02-06T18:12:03Zequal to or more than 2018-02-06T18:12:03Z
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Giant stars original
O stars original