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32 Cards in this Set
- Front
- Back
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High mass giant star |
Above eight solar masses |
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Hydrogen fusion |
The thermo nuclear fusion of hydrogen to produce helium. |
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Detached binary |
A binary system in which they surface of both stars are inside their roche lobes |
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Co helium fusion |
The fusion of helium to form carbon and oxygen at the center of a star. |
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Hr diagram |
Is a plot of the absolute magnitude or luminosity of stars versus their surface temperatures or spectral classes. |
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Emission nebula |
A glowing gashes nebula whose light comes from fluorescence caused by a nearby star. |
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Dark nebula |
A cloud of inter stellar gas and dust that obscures the light of more distant stars |
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Bok globule |
A small roundish dark nebula in which stars are forming |
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Kerr black hole |
Any rotating uncharged black hole. |
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RR lyrae variable |
Low math pulsating stars with short periods. |
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Globular clusters |
A large spiracle cluster of gravitationally bound stars usually found in the Outlying regions of a Galaxy |
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Dense cores |
Any of the region of interstellar gas clouds that are slightly denser than normal and destined to collapse to form one or a few stars. |
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Type 2 cepheid |
Variable star found in elliptical galaxys and in the halos of disk galaxys metal poor 4 times dimmer than type one |
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Hydrostatic equilibrium |
A balance between the weight of a layer in a star and the pressure that supports it. |
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Roche lobes |
The tear drop shaped region around a star in a binary system inside of which gas is gravitationally bound to that star. |
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Dragons egg |
A science fiction novel by Robert L forward about the rise of civilization on a neutron star. |
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Interstellar medium |
Gas and dust in interstellar space. |
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H 2 region |
A region of ionized hydrogen in interstellar space. |
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Variable star |
A star whose luminosity varies |
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Type 2 supernova |
Hey supernova occurring after a massive star's core is converted into iron. |
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Brown dwarfs |
Any of the plant like bodies with less than .08 solar masses And more than about 13 Jupiter masses, Such bodies do not have enough mass to sustain fusion in their core. |
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Ic |
Stands for index catalog it is a supplement to the NGC published in 1895 this isn't new either. |
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Interstellar rendering |
The rendering of straight passing through the interstellar medium resulting from the scattering or short wavelength light more than long wavelength light. |
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Protostar |
The earliest stage of a star's life before fusion commences and when gas is rapidly falling on to it. |
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Population 2 stars |
A star whose spectrum exhibits comparatively few spectral lines of elements heavier than helium, a metal poor star. |
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Hydrogen shell fusion |
Hydrogen fusion that occurs in a thin shell surrounding the core of a star. |
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Carbon dioxide |
Co2 the triatomic molecule containing one carbon atom and two oxygen atoms. |
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Zero age main sequence (zams) |
The positions of stars on the HR diagram that have just begun to fuse hydrogen in their cores. |
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White dwarf |
A low mass stellar remanent that has exhausted all its thermonuclear fuel and contracted to a size roughly equal to the size earth. |
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Nac |
Stands for new general catalog, It is a collection of deep sky objects the work new is not to be taken literally anymore as it was compiled in 1888 |
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Core |
A star in a via Neri system that experiences a sudden outburst of radiant energy temporarily increasing its luminosity by a factor between 10000 and a million |
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Horizontal branch stars |
A group of post helium Flash stars near the main sequence on the HR diagram of a typical gobular cluster |
