| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
|---|---|---|---|---|
| identification (identification) | ||||
|
identification |
||||
| e.g. catalog number, etc | ||||
| I galaxy (IGalaxy) | ||||
|
irregular galaxy (Yerkes classification scheme) |
irregular galaxy | Yerkes classification | ||
| FVH: new (2007-OCT-12) | ||||
| illumination (illumination) | ||||
|
illumination |
albedo
, brightness , intensity , lunar phase , radiation |
|||
| of solar system body | ||||
| image (image) | ||||
|
image |
digital image
, photograph |
Hartmann test
, halation , photography , vision |
||
| image processing (imageProcessing) | ||||
|
image processing |
clean method
, flat field , image reconstruction , two-dimensional detector |
|||
| image reconstruction (imageReconstruction) | ||||
|
image reconstruction |
clean method
, image processing |
|||
| image tube (imageTube) | ||||
|
image tube |
image converters
, image intensifier , light amplifier , photoelectric image tube |
multi-channel detector
, photoelectric instrument , photoelectronic device , two-dimensional detector |
amplifier
, electrode , electronic camera , microchannel plate , phosphorescence , phosphorescent scintillation , photocathode , quantum efficiency , scintillation counter |
|
| imaging instrument (imagingInstrument) | ||||
|
imaging instrument |
instrument | |||
| combine with other terms | ||||
| I magnitude (IMagnitude) | ||||
|
I magnitude |
apparent magnitude |
Bessel photometry
, Johnson photometry , Kron-Cousins photometry , infrared photometry , near infrared radiation |
||
| impact crater (impactCrater) | ||||
|
impact crater |
crater | meteorite | ||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| impersonal astrolabe (impersonalAstrolabe) | ||||
|
impersonal astrolabe |
astrolabe | |||
| inclination (inclination) | ||||
|
inclination |
orbital element |
binary star
, node |
||
| indium (indium) | ||||
|
indium (atomic number 49) |
In | fundamental chemical element | ||
| FVH: new (2007-OCT-25) | ||||
| indochinite (indochinite) | ||||
|
indochinite |
tektite | |||
| inertial coordinate system (inertialCoordinateSystem) | ||||
|
inertial coordinate system |
coordinate system |
inertial reference frame
, relativity |
||
| inertial reference frame (inertialReferenceFrame) | ||||
|
inertial reference frame |
inertial coordinate system
, relativity |
|||
| inflationary universe (inflationaryUniverse) | ||||
|
inflationary universe |
cosmology | |||
| infrared astronomy (infraredAstronomy) | ||||
|
infrared astronomy |
astronomy |
infrared radiation
, infrared telescope , satellite-borne instrument |
||
| infrared detector (infraredDetector) | ||||
|
infrared detector |
detector | photometer | ||
| infrared emission (infraredEmission) | ||||
|
infrared emission |
emission spectrum | thermal emission | ||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| infrared galaxy (infraredGalaxy) | ||||
|
infrared galaxy |
galaxy
, infrared source |
IRAS galaxy | ||
| infrared (infrared) | ||||
|
infrared |
infrared radiation | |||
| combine with other terms | ||||
| infrared observatory (infraredObservatory) | ||||
|
infrared observatory |
observatory | IRAS satellite |
airplane-borne instrument
, infrared source , rocket-borne instrument , space observatory |
|
| see observatory for more rts | ||||
| infrared photometry (infraredPhotometry) | ||||
|
infrared photometry |
broad band photometry
, medium band photometry , photometry |
H magnitude
, I magnitude , J magnitude , K magnitude , L magnitude , M magnitude , N magnitude , O magnitude , P magnitude , Q magnitude , far infrared radiation , near infrared radiation |
||
| infrared radiation (infraredRadiation) | ||||
|
infrared radiation |
electromagnetic radiation
, radiation |
Brackett series
, Pfund series , Phillips band , far infrared radiation , near infrared radiation |
IRAS satellite
, greenhouse effect , infrared , infrared astronomy , remote sensing , terrestrial radiation , thermal radiation |
|
| infrared source (infraredSource) | ||||
|
infrared source |
source |
FU Orionis star
, Herbig-Haro object , OH IR star , cocoon star , extreme carbon star , flare star , infrared galaxy |
infrared observatory
, star formation |
|
| infrared telescope (infraredTelescope) | ||||
|
infrared telescope |
telescope | infrared astronomy | ||
| infrared transmission window (infraredTransmissionWindow) | ||||
|
infrared transmission window through the atmosphere |
atmospheric window |
optical transmission window
, radio transmission window |
||
| FVH: renamed to avoid confusion with optics (2007-NOV-2) | ||||
| low absorption in atmosphere | ||||
| inhomogenity (inhomogenity) | ||||
|
inhomogenity |
||||
| combine with other terms | ||||
| initial mass function (initialMassFunction) | ||||
|
initial mass function |
IMF |
mass
, mass-ratio , star cluster , stellar evolution |
||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| inner core (innerCore) | ||||
|
inner core |
helium burning
, hydrogen burning , stellar evolution , stellar interior |
|||
| central region of star | ||||
| inner planet (innerPlanet) | ||||
|
inner planet |
terrestrial planet | planet | outer planet | |
| instability (instability) | ||||
|
instability |
Rayleigh-Taylor instability | |||
| combine with other terms | ||||
| instability strip (instabilityStrip) | ||||
|
instability strip |
Cepheid
, Hertzsprung-Russell diagram , giant branch , stellar evolution |
|||
| instrumental profile (instrumentalProfile) | ||||
|
instrumental profile |
line profile |
equivalent width
, line broadening , line width , spectral line |
||
| instrument (instrument) | ||||
|
instrument |
astronomical instrument
, instrumentation |
airplane-borne instrument
, amplifier , armillary sphere , astrolabe , astrometric instrument , auxiliary instrument , blink comparator , bolometer , coronagraph , detector , guide system , imaging instrument , interferometer , magnetograph , magnetoheliograph , quadrant , sextant , spectrograph , stroboscope , telescope instrument |
calibration
, electronic equipment , frequency standard , metrology , peripheral , support system |
|
| only the broad classes are shown below; specific type will be found under these, or from the hierarchical list | ||||
| integral field spectrograph (integralFieldSpectrograph) | ||||
|
integral field spectrograph |
spectrograph |
multi-fiber spectrograph
, multi-slit spectrograph , three-dimensional spectrum |
||
| FVH: new (2007-SEP-21) | ||||
| integrated magnitude (integratedMagnitude) | ||||
|
integrated magnitude |
total magnitude | magnitude |
galaxy
, star cluster |
|
| integration time (integrationTime) | ||||
|
integration time |
brightness
, noise , sensitivity , signal-to-noise ratio |
|||
| intensity (intensity) | ||||
|
intensity |
specific intensity | apparent intensity |
brightness
, illumination , luminosity , magnitude |
|
| combine with other terms | ||||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| intensity interferometer (intensityInterferometer) | ||||
|
intensity interferometer |
interferometer
, optical interferometer |
Michelson interferometer | ||
| interacting binary star (interactingBinaryStar) | ||||
|
interacting binary star |
binary star |
X-ray binary star
, cataclysmic variable star |
Roche lobe
, X-ray bright point , eclipsing binary star , eruptive binary star , tidal friction , tidal interaction |
|
| interacting galaxy (interactingGalaxy) | ||||
|
interacting galaxy |
galaxy
, peculiar galaxy |
galaxy encounter
, galaxy merger , tail , tidal distortion , tidal friction , tidal interaction |
||
| interaction (interaction) | ||||
|
interaction |
electromagnetic interaction
, gravitational interaction , strong interaction , weak interaction |
equation of state
, nuclear physics |
||
| intercloud gas (intercloudGas) | ||||
|
intercloud gas |
intercloud matter | |||
| intercloud matter (intercloudMatter) | ||||
|
intercloud matter |
interstellar matter | intercloud gas | ||
| interference filter (interferenceFilter) | ||||
|
interference filter |
filter
, optical component , optical filter |
interference wave
, optical film , photometry , ultraviolet filter |
||
| interference fringe (interferenceFringe) | ||||
|
interference fringe |
fringe patterns
, fringe |
interference wave
, interferometer , interferometry , optical interferometry , visibility function |
||
| interference noise (interferenceNoise) | ||||
|
interference [noise] |
noise | |||
| interference spectrosocopy (interferenceSpectrosocopy) | ||||
|
interference spectrosocopy |
spectroscopy | interference wave | ||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| interference wave (interferenceWave) | ||||
|
interference [wave] |
light interference |
diffraction
, interference filter , interference fringe , interference spectrosocopy , interferometry , optical interferometry , radio interferometry , shadow band , wave motion |
||
| interferometer (interferometer) | ||||
|
interferometer |
instrument |
Fabry-Perot interferometer
, intensity interferometer , long baseline interferometer , optical interferometer , phase switching interferometer , radio interferometer , very long baseline interferometer |
antenna
, array , heterodyne , interference fringe , radio telescope , telescope array |
|
| see also under interferometry | ||||
| interferometric correlation (interferometricCorrelation) | ||||
|
interferometric correlation |
correlation |
cross-correlation
, interferometry , receiver |
||
| FVH: changed from correlation to avoid mixup with generic term (2007-OCT-26) | ||||
| combine with other terms | ||||
| interferometry (interferometry) | ||||
|
interferometry |
astronomical technique
, observing technique |
long baseline interferometry
, optical interferometry , radio interferometry , speckle interferometry , very long baseline interferometry |
angular diameter
, aperture synthesis , correlation , interference fringe , interference wave , interferometric correlation , radio astrometry , resolution , visibility function |
|
| see also under interferometer | ||||
| intergalactic absorption (intergalacticAbsorption) | ||||
|
intergalactic absorption |
absorption |
Lyman alpha forest
, absorption coefficient , intergalactic matter , intergalactic space , interstellar absorption , reddening |
||
| intergalactic cloud (intergalacticCloud) | ||||
|
intergalactic cloud |
intergalactic matter | intergalactic gas | ||
| intergalactic gas (intergalacticGas) | ||||
|
intergalactic gas |
intergalactic matter | intergalactic cloud | ||
| intergalactic matter (intergalacticMatter) | ||||
|
intergalactic matter |
Dark Matter
, dust , intergalactic cloud , intergalactic gas |
cosmic string
, galaxy cluster , intergalactic absorption , intergalactic space , interplanetary matter , interstellar matter , intracluster matter |
||
| intergalactic space (intergalacticSpace) | ||||
|
intergalactic space |
galaxy void
, intergalactic absorption , intergalactic matter |
|||
| interior (interior) | ||||
|
interior |
planet | |||
| combine with other terms | ||||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| intermediate population star (intermediatePopulationStar) | ||||
|
intermediate population star |
star |
population II star
, stellar population |
||
| intermediate type star (intermediateTypeStar) | ||||
|
intermediate type star |
F star
, G star |
|||
| internal motion (internalMotion) | ||||
|
internal motion |
motion | |||
| combine with other terms | ||||
| interplanetary dust (interplanetaryDust) | ||||
|
interplanetary dust |
dust
, interplanetary matter |
meteoroid |
grain
, interplanetary gas |
|
| interplanetary gas (interplanetaryGas) | ||||
|
interplanetary gas |
interplanetary matter |
interplanetary dust
, interplanetary grain , solar wind |
||
| interplanetary grain (interplanetaryGrain) | ||||
|
interplanetary grain |
grain
, interplanetary matter |
meteoroid |
adsorption
, graphite , interplanetary gas |
|
| interplanetary magnetic field (interplanetaryMagneticField) | ||||
|
interplanetary magnetic field |
magnetic field | |||
| interplanetary matter (interplanetaryMatter) | ||||
|
interplanetary matter |
interplanetary medium |
interplanetary dust
, interplanetary gas , interplanetary grain , meteoroid , solar wind |
asteroid
, circumstellar matter , comet , gegenschein , heliosphere , intergalactic matter , interplanetary scintillation , interstellar matter , meteorite , micrometeorite , zodiacal dust , zodiacal light |
|
| interplanetary scintillation (interplanetaryScintillation) | ||||
|
interplanetary scintillation |
scintillation |
interplanetary matter
, interstellar scintillation , ionospheric scintillation , radio source |
||
| interstellar absorption (interstellarAbsorption) | ||||
|
interstellar absorption |
interstellar extinction | absorption | OH absorption |
Galactic window
, Rayleigh scattering , Wolf diagram , absorption coefficient , intergalactic absorption , interstellar dust , interstellar gas , interstellar reddening , light absorption , reddened star , reddening , window |
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| interstellar bubble (interstellarBubble) | ||||
|
interstellar bubble |
bubble | |||
| combine with other terms | ||||
| interstellar communication (interstellarCommunication) | ||||
|
interstellar communication |
extraterrestrial life
, space exploration |
|||
| interstellar dust (interstellarDust) | ||||
|
interstellar dust |
dust
, interstellar matter |
adsorption
, dust cloud , grain , graphite , interstellar absorption , interstellar gas , reddening |
||
| interstellar gas (interstellarGas) | ||||
|
interstellar gas |
interstellar matter |
absorption
, heliosphere , interstellar absorption , interstellar dust , interstellar wind , reddening |
||
| interstellar magnetic field (interstellarMagneticField) | ||||
|
interstellar magnetic field |
magnetic field | spiral arm | ||
| interstellar matter (interstellarMatter) | ||||
|
interstellar matter |
interstellar medium |
Bok globule
, C II region , Dark Matter , H I region , H II region , OH cloud , cometary globule , dark cloud , dark nebula , dense cloud , dust , dust cloud , dust grain , dust nebula , globule , grain , intercloud matter , interstellar dust , interstellar gas , interstellar molecule , molecular cloud , nebula , nebular filament , reflection nebula |
SiO maser
, Stromgren sphere , circumstellar matter , cosmic string , galaxy structure , intergalactic matter , interplanetary matter , interstellar reddening , interstellar scintillation , maser , radio absorption , radio transmission window , selective absorption , spiral arm , torus |
|
| interstellar molecule (interstellarMolecule) | ||||
|
interstellar molecule |
interstellar matter
, molecule |
CS
, ammonia , carbon compound , hydrated carbon , hydroxyl radical , methane , molecular hydrogen , water |
cosmochemistry
, giant molecular cloud , molecular cloud , organic molecule |
|
| not a complete list of nts | ||||
| interstellar reddening (interstellarReddening) | ||||
|
interstellar reddening |
reddening |
color excess
, gas to dust ratio , interstellar absorption , interstellar matter , light absorption , light scattering , reddened star , reddening law , selective absorption |
||
| interstellar scintillation (interstellarScintillation) | ||||
|
interstellar scintillation |
scintillation |
interplanetary scintillation
, interstellar matter , ionospheric scintillation , radio source |
||
| interstellar wind (interstellarWind) | ||||
|
interstellar wind |
interstellar gas
, solar wind , stellar wind |
|||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| intracluster matter (intraclusterMatter) | ||||
|
intracluster matter |
Sunyaev-Zeldovich effect
, galaxy cluster , intergalactic matter |
|||
| intrinsic color (intrinsicColor) | ||||
|
intrinsic color |
color index
, photometry , reddening |
|||
| intrinsic variable star (intrinsicVariableStar) | ||||
|
intrinsic variable star |
unstable star | variable star |
Herbig-Haro object
, magnetic variable star , pulsating variable star , spectrum variable star |
|
| inverse Compton effect (inverseComptonEffect) | ||||
|
inverse Compton effect |
cosmic ray
, electron , high-energy astrophysics , photon |
|||
| inverse Compton scattering (inverseComptonScattering) | ||||
|
inverse Compton scattering |
Compton scattering
, electron , photon |
|||
| inverse maser (inverseMaser) | ||||
|
inverse maser |
maser | |||
| iodine cell (iodineCell) | ||||
|
iodine cell |
optical filter
, radial velocity |
|||
| FVH: new (2007-OCT-25) | ||||
| iodine (iodine) | ||||
|
iodine (atomic number 53) |
I | fundamental chemical element | ||
| FVH: new (2007-OCT-25) | ||||
| ion composition (ionComposition) | ||||
|
ion composition |
ion | |||
| ion density (ionDensity) | ||||
|
ion density |
ionization
, ion |
|||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| ion (ion) | ||||
|
ion |
charged particle |
composite particle
, particle |
hydroxyl radical |
Paul trap
, Saha equation , collisional excitation , collisional plasma , ion composition , ion density , ion plasma wave , ionized gas , plasma cloud , plasma jet , plasma , polarization charge separation , radical , thermionic emission |
| ionization equilibrium (ionizationEquilibrium) | ||||
|
ionization equilibrium |
ionisation equilibrium UK | ionization | ||
| ionization (ionization) | ||||
|
ionization |
ionisation UK | photoionization |
Schwarzschild metric
, Stromgren sphere , corona , ion density , ionization equilibrium , shock |
|
| ionized gas (ionizedGas) | ||||
|
ionized gas |
gas | H II |
Stromgren sphere
, collisional excitation , ion , plasma |
|
| ionizing shock wave (ionizingShockWave) | ||||
|
ionizing shock wave |
shock wave | |||
| ionosphere (ionosphere) | ||||
|
ionosphere |
D layer
, E layer , Earth atmosphere , F layer , exosphere , ionospheric scintillation , mesopause , radio absorption , thermosphere , upper atmosphere |
|||
| ionospheric scintillation (ionosphericScintillation) | ||||
|
ionospheric scintillation |
scintillation |
interplanetary scintillation
, interstellar scintillation , ionosphere , radio source |
||
| ion plasma wave (ionPlasmaWave) | ||||
|
ion plasma wave |
ion
, plasma wave |
|||
| ion temperature (ionTemperature) | ||||
|
ion temperature |
temperature | |||
| IRAS galaxy (IrasGalaxy) | ||||
|
IRAS galaxy |
infrared galaxy | IRAS satellite | ||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| IRAS satellite (IrasSatellite) | ||||
|
InfraRed Astronomical Satellite |
IRAS |
infrared observatory
, space observatory |
IRAS galaxy
, infrared radiation |
|
| FVH: new, because of IRAS_galaxy (2007-NOV-1) | ||||
| iridium (iridium) | ||||
|
iridium (atomic number 77) |
Ir | fundamental chemical element | ||
| FVH: new (2007-OCT-25) | ||||
| iron (iron) | ||||
|
iron (atomic number 26) |
Fe | fundamental chemical element | iron meteorite | |
| FVH: new (2007-OCT-25) | ||||
| iron meteorite (ironMeteorite) | ||||
|
iron meteorite |
meteorite | iron | ||
| irradiance (irradiance) | ||||
|
irradiance |
radiation | |||
| irregular galaxy (irregularGalaxy) | ||||
|
irregular galaxy |
galaxy |
I galaxy
, Magellanic cloud |
||
| irregular variable star (irregularVariableStar) | ||||
|
irregular variable star |
late-type giant
, pulsating variable star , variable star |
Mira variable star
, R Coronae Borealis star , RV Tauri star , RW Aurigae star , T Tauri star , UU Herculis star , dwarf Cepheid , gamma Cassiopeiae star , soft gamma-ray repeater |
T association
, late-type supergiant , semi-regular variable star , supergiant |
|
| isophotal diameter (isophotalDiameter) | ||||
|
isophotal diameter |
angular diameter
, diameter |
galaxy
, isophot , luminosity distribution , surface photometry |
||
| ES: new (2007-OCT-11) | ||||
| isophot (isophot) | ||||
|
isophot |
contour map
, isophotal diameter , luminosity distribution , surface photometry |
|||
| isothermal sphere (isothermalSphere) | ||||
|
isothermal mass-profile |
mass distribution |
Burkert profile
, Navarro-Frenk-White profile , exponential profile |
||
| FVH: new (2007-OCT-5) | ||||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | ||||
| Description | alt | broader | narrower | related |
| isotope (isotope) | ||||
|
isotope |
chemical element |
deuterium
, tritium |
||
| isotopic abundance (isotopicAbundance) | ||||
|
isotopic abundance |
abundance | isotopic composition | ||
| isotopic composition (isotopicComposition) | ||||
|
isotopic composition |
isotopic abundance | |||
| isotropy (isotropy) | ||||
|
isotropy |
anisotropy
, optical property |
|||