The Unified Astronomy Thesaurus

Search Results

Interstellar medium wind original
star this property broader
Stellar-interstellar interactions original
star this property definition Wind that a star perceives from the ISM.
Schonberg-Chandrasekhar limit original
star this property dcterms created equal to or less than 2018-09-10T16:07:43Zequal to or more than 2018-09-10T16:07:43Z
unstar this property dcterms modified equal to or less than 2018-09-11T18:40:36Zequal to or more than 2018-09-11T18:40:36Z
star this property broader
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
star this property broader
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
star this property broader
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
star this property broader
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
unstar this property dcterms modified equal to or less than 2018-09-20T14:28:46Zequal to or more than 2018-09-20T14:28:46Z
unstar this property broader
Astrobiology original
star this property definition "the study of synthesizing and manipulating biological devices and systems" - Wikipedia
Astrobiology original
unstar this property dcterms modified equal to or less than 2018-09-20T15:08:24Zequal to or more than 2018-09-20T15:08:24Z
star this property broader
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.
star this property narrower
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
star this property broader
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
star this property broader
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
star this property broader
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.
DC stars original
star this property dcterms created equal to or less than 2017-01-23T19:10:45Zequal to or more than 2017-01-23T19:10:45Z
star this property broader
White dwarf stars original
Absolute magnitude original
unstar this property dcterms modified equal to or less than 2018-08-17T17:24:59Zequal to or more than 2018-08-17T17:24:59Z
star this property broader
Magnitude original
Astrophysical explosive burning original
star this property broader
Nuclear astrophysics original
Main sequence stars original
unstar this property dcterms modified equal to or less than 2018-09-14T15:23:49Zequal to or more than 2018-09-14T15:23:49Z
star this property broader
Stellar evolutionary types original
star this property narrower
Zero-age main sequence stars original
Major axis original
star this property broader
Elliptical orbits original
Makemake original
star this property broader
Classical Kuiper belt objects original
Dwarf planets original
Plutoids original
Maksutov telescopes original
star this property broader
Catadioptric telescopes original
Manganese stars original
star this property broader
Ap stars original
Chemically peculiar stars original
Heavy metal stars original
Mantle original
star this property broader
Planetary structure original
Markarian galaxies original
star this property broader
Active galaxies original
Emission line galaxies original
Mars original
unstar this property dcterms modified equal to or less than 2018-08-30T21:26:45Zequal to or more than 2018-08-30T21:26:45Z
star this property broader
Inner planets original
Mars trojans original
star this property broader
Trojan asteroids original
Martian satellites original
unstar this property dcterms modified equal to or less than 2018-08-30T21:26:45Zequal to or more than 2018-08-30T21:26:45Z
star this property broader
Natural satellites (Solar system) original
Astrophysical fluid dynamics original
unstar this property dcterms modified equal to or less than 2018-08-27T19:37:19Zequal to or more than 2018-08-27T19:37:19Z
star this property broader
Interdisciplinary astronomy original
star this property narrower
Hydrodynamics original
Internal waves original
Magnetohydrodynamics original
Radiative magnetohydrodynamics original
Mascon original
star this property broader
Gravity anomaly original
Mass-to-light ratio original
star this property broader
Astronomical models original
Mass ratio original
star this property broader
Three-body problem original
Mass spectrometers original
unstar this property dcterms modified equal to or less than 2018-09-20T15:33:26Zequal to or more than 2018-09-20T15:33:26Z
star this property broader
Spectrometers original
Matter density original
star this property broader
Density parameters original
Maunder minimum original
star this property broader
Sunspots original
Maximal Kerr black holes original
star this property broader
Kerr black holes original
Me stars original
unstar this property dcterms modified equal to or less than 2018-09-13T20:23:44Zequal to or more than 2018-09-13T20:23:44Z
star this property broader
Emission line stars original
M stars original
star this property narrower
Me variable stars original
Me variable stars original
unstar this property dcterms modified equal to or less than 2018-09-14T15:27:48Zequal to or more than 2018-09-14T15:27:48Z
unstar this property broader
Me stars original
M giant stars original
Mean anomaly original
star this property broader
Orbital anomalies original
Astrophysical magnetism original
star this property broader
Astrophysical processes original
star this property narrower
Cosmic magnetic fields theory original
Emerging flux tubes original
Magnetic fields original
Mean matter density original
star this property broader
Large-scale structure of the universe original
Medium band photometry original
star this property broader
Photometric systems original
star this property narrower
DDO photometry original
Geneva photometry original
Strömgren photometric system original
Vilnius photometry original
Walraven photometry original
Megalithic astronomy original
star this property broader
Archaeoastronomy original
Megamasers original
unstar this property broader
Astrophysical masers original
Mercury (planet) original
unstar this property dcterms modified equal to or less than 2018-08-29T14:51:36Zequal to or more than 2018-08-29T14:51:36Z
star this property broader
Inner planets original
Mercury-manganese stars original
star this property broader
B stars original
Chemically peculiar stars original
Magnetic stars original
Meridian original
star this property broader
Horizontal coordinate system original
Meridian circles original
star this property broader
Telescopes original
Transit instruments original
Mesogranulation original
star this property broader
Solar granulation original
Mesopause original
star this property broader
Earth atmosphere original
Astrophysical masers original
unstar this property dcterms modified equal to or less than 2018-09-14T15:29:50Zequal to or more than 2018-09-14T15:29:50Z
star this property broader
Extragalactic astronomy original
Interstellar medium original
star this property narrower
Megamasers original
Hydroxyl masers original
Silicon monoxide masers original
Water masers original
Mesosphere original
star this property broader
Earth atmosphere original
Metallicity original
unstar this property dcterms modified equal to or less than 2018-09-14T19:17:56Zequal to or more than 2018-09-14T19:17:56Z
star this property broader
Chemical abundances original
Metal line absorbers original
star this property broader
Intergalactic clouds original
Meteor radiants original
star this property broader
Meteor showers original