Term
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Definition
| Horizon/Isotropy, Flatness, Cosmic Particle Horizon |
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Term
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Definition
| period of expo. growth which expanded a smaller, homogeneous region |
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Term
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Definition
| hot radiation - particle/anti particle created in early universe - particles annihilate=>thermal radiation - antimatter over mater |
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Term
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Definition
| electro- magnetic radiation, perpedicular wavelengths |
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Term
| Higher to lower Wavelengths |
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Definition
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Term
| Radio/micro wave window technique |
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Definition
| high resolution mapping and large scale surveys, non-thermal emission |
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Term
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Definition
| extends optical range, better spectral coverage of all sources |
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Term
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Definition
| most reliable and intuitive with common emissions |
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Term
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Definition
| highest energy and temp, diffuse emissions |
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Term
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Definition
| a spectrum whose intensity is determined solely by temperature; temp, color, brightness |
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Term
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Definition
| object that absorbs all light |
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Term
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Definition
| higher temp, more radiation |
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Term
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Definition
| pattern of light emission from an object as a function of wavelength |
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Term
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Definition
| light that covers all energies |
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Term
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Definition
| light seen or not seen at specific energies |
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Term
| a hot opaque gass produces _______ spectrum |
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Definition
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Term
| a hot, transparent gas produces _________spectrum |
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Definition
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Term
| a cool transparent gas in front of a continuum produces _________ __________ spectrum |
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Definition
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Term
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Definition
| a particular element with different # of neutrons |
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Term
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Definition
| a particular element with different # of neutrons |
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Term
| electrons drops to lower energy state and emits a photon |
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Definition
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Term
| an electron absorbs a photon and moves up in energy |
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Definition
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Term
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Definition
| lighter elements combine into heavier elements |
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Term
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Definition
| heavy hydrogen - 1 pro 1 neu |
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Term
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Definition
| nearly mass-less; uncharged and emitted |
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Term
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Definition
| like an electron but positively charged |
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Term
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Definition
| 2 hydrogen combine into deuterium, emitting neutrino and positron which annihilate to make energy |
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Term
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Definition
| deuterium and another hydrogen to form helium isotope, more energy released |
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Term
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Definition
| helium isotopes combine into normal helium and two extra hydrogens |
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Term
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Definition
| pressure from below balances pressure and weight from above |
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Term
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Definition
| temperature of a layer that is constant over time |
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Term
| Inner core of sun, middle region, and outer |
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Definition
| fusion, radiative diffusion, convection |
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Term
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Definition
| surface, lowest layer of atmosphere |
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Term
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Definition
| cooler, darker regions near the edge of the sun |
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Term
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Definition
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Term
| the physical process where hotter lgither material rises and cooler denser material sinks |
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Definition
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Term
| region of tenuous gas on the sun: photosphere, limb darkening, chromosphere or out region |
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Definition
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Term
| low density, how outer zone of sun with solar wind: chromosphere, photosphere, corona, or limb darkening? |
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Definition
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Term
| cooler than average gas in the photosphere: corona, limb darkening, sunspots, or solar wind? |
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Definition
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Term
| the splitting of spectral lines in a magnetic field? westermarck, einstein, zeeman, or plancks effect? |
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Definition
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Term
| region that precedes a sunspot: plage, filament, prominence, or corona? |
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Definition
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Term
| loop of hot gas? prominence, corona, plage, or filament? |
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Definition
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Term
| a brief, etic burst? plage, sunspot, flare, or filament? |
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Definition
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Term
| associated with flares are? coronas, sunspots, plages, or coronal mass ejections ? |
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Definition
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Term
| stellar parallax uses ________ ___________ to determine distance |
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Definition
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Term
| apparent magnitude is the brightess of a star seen from _________ |
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Definition
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Term
| brighter stars have ________ magnitudes |
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Definition
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Term
| what percent of stars are brighter thant he sun? 10, 15, 25, or 50 |
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Definition
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Term
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Definition
| both stars can be seen orbiting each other from a telelscope |
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Term
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Definition
| binary stars discovered by doppler shift in spectral lines |
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Term
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Definition
| discovered because one stars occults the other |
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Term
| view of nature and evolution of universe until 20th centery |
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Definition
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Term
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Definition
| universe as a whole is expanding with no center |
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Term
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Definition
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Term
| redshift is not cause by space motion but |
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Definition
| by the expansion of space |
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Term
| Cosmic microwave background CMD |
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Definition
| 2.73 K blackbody radiation |
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Term
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Definition
| on large scales, the universe is homogeneous and isotropic |
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Term
| an isotropic and homogeneous universe means that |
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Definition
| the laws of physics are the same everywhere |
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Term
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Definition
| a form of dark energy postulated by Einstein |
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Term
| galaxies with radiation dominated by a central core have |
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Definition
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Term
| radio emission and emission lines separates quasars from |
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Definition
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Term
| by doppler shifts, high z => |
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Definition
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Term
| virtually no quasars are younger than |
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Definition
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Term
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Definition
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Term
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Definition
| elliptical with radio loud core |
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Term
| the center of a quasar contains a |
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Definition
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Term
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Definition
| the stage at which the inner most core of star is convert hydrogen to helium |
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Term
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Definition
| defined by the length of core burning |
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Term
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Definition
| core compacts and heats up increasing fusion and luminosity |
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Term
| helium fusion begins with |
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Definition
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Term
| Evolution: main sequences, hell burning, core hilum fusion |
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Definition
| 12 billion, 250 million, 100 million years |
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Term
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Definition
| low man core helium burning stars |
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Term
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Definition
| young, metal rich, open cluster |
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Term
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Definition
| older, metal poor, globular cluster |
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Term
| pulsating stars reside where in the main sequence? |
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Definition
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Term
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Definition
| low mass helium burning stars that changes brightness is less than 1 day |
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Term
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Definition
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Term
| Period Luminosity: Type 1, 2 |
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Definition
| 1: brighter, metal rich; 2: dimmer, metal poor |
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