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
Descriptionaltbroadernarrowerrelated
tail      (tail)
tail
 comet ,
head tail galaxy ,
interacting galaxy ,
streamer
 
tangential velocity      (tangentialVelocity)
tangential velocity
 velocity orbital velocity ,
radial velocity ,
rotational velocity
 
tantalum      (tantalum)
tantalum (atomic number 73)
 Ta fundamental chemical element
FVH: new (2007-OCT-25)
 
t array      (tArray)
t array
 array ,
radio interferometer 		y array
 
T association      (TAssociation)
T association
 T-association star association FU Orionis star ,
H alpha emission line star ,
Herbig-Haro object ,
RW Aurigae star ,
T Tauri star ,
flare star ,
flash star ,
irregular variable star ,
pre-main sequence star ,
young star cluster ,
young star
 
  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
Descriptionaltbroadernarrowerrelated
taxonomy      (taxonomy)
taxonomy
 classification
 
T dwarf      (TDwarf)
T dwarf
 brown dwarf T subdwarf ,
low-mass star ,
spectral type
FVH: new (2007-OCT-2)
 
teaching in astronomy      (teachingInAstronomy)
teaching in astronomy
 education
 
technetium line      (technetiumLine)
technetium line
 metal line ,
spectral line 		technetium
 
technetium star      (technetiumStar)
technetium star
 N star ,
S star ,
technetium
 
technetium      (technetium)
technetium (atomic number 43)
 Tc fundamental chemical element technetium line ,
technetium star
FVH: new (2007-OCT-25)
 
tektite      (tektite)
tektite
 meteorite australite ,
bediasite ,
indochinite ,
moldavite
 
telescope array      (telescopeArray)
telescope array
 array filling factor ,
interferometer ,
telescope
 
telescope construction      (telescopeConstruction)
telescope construction
 telescope
 
telescope design      (telescopeDesign)
telescope design
 telescope mounting ,
telescope
 
  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
Descriptionaltbroadernarrowerrelated
telescope instrument      (telescopeInstrument)
telescope instrument
 telescope instrumentation instrument photometer ,
polarimeter ,
spectrograph 		control system ,
detector ,
feed horn ,
feed ,
remote control system ,
spectrophotometer ,
telescope
not a complete list of terms
 
telescope mirror      (telescopeMirror)
telescope mirror
 mirror primary mirror ,
secondary mirror ,
tertiary mirror 		telescope
 
telescope mounting      (telescopeMounting)
telescope mounting
 altazimuth mounting ,
equatorial mounting 		coelostat ,
heliostat ,
polar axis ,
siderostat ,
telescope design ,
telescope
 
telescope      (telescope)
telescope
 optical instrument Cassegrain telescope ,
Gregorian telescope ,
automated telescope ,
gamma-ray telescope ,
grazing incidence telescope ,
infrared telescope ,
optical telescope ,
radio telescope ,
solar telescope ,
space telescope 		antenna ,
control system ,
dome ,
drive ,
focus ,
guide system ,
observatory ,
optical aberration ,
pointing accuracy ,
pointing error ,
remote control system ,
support system ,
telescope array ,
telescope construction ,
telescope design ,
telescope instrument ,
telescope mirror ,
telescope mounting ,
vignetting
only the broad classes are shown below; specific type will be found under these, or from the hierarchical list
 
television camera      (televisionCamera)
television camera
 TV camera television ,
television detector ,
two-dimensional detector
 
television detector      (televisionDetector)
television detector
 TV camera ,
television camera tube 		multi-channel detector ,
photoelectronic device ,
two-dimensional detector 		CCD detector ,
television ,
television camera
 
television      (television)
television
 TV television camera ,
television detector
 
telluric line      (telluricLine)
telluric line
 spectral line Earth atmosphere ,
spectral band
from Earth's atmosphere
 
tellurium      (tellurium)
tellurium (atomic number 52)
 Te fundamental chemical element
FVH: new (2007-OCT-25)
 
temperature control      (temperatureControl)
temperature control
 air conditioning ,
cryogenics ,
cryostat ,
dome ,
temperature distribution ,
ventilation
 
  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
Descriptionaltbroadernarrowerrelated
temperature distribution      (temperatureDistribution)
temperature distribution
 temperature control ,
temperature zone
 
temperature effect      (temperatureEffect)
temperature effect
 thermal effect
combine with other terms
 
temperature fluctuation      (temperatureFluctuation)
temperature fluctuation
combine with other terms
 
temperature scale      (temperatureScale)
temperature scale
 absolute temperature scale ,
celsius temperature scale 		Kelvin
 
temperature      (temperature)
temperature
 brightness temperature ,
effective temperature ,
electron temperature ,
ion temperature 		absolute temperature scale ,
celsius temperature scale ,
color ,
emissivity ,
limb brightening ,
limb darkening ,
radiative equilibrium ,
spectral type ,
surface brightness ,
thermal conductivity ,
thermodynamics
combine with other terms
 
temperature zone      (temperatureZone)
temperature zone
 atmosphere ,
stellar interior ,
temperature distribution
 
terbium      (terbium)
terbium (atomic number 65)
 Tb fundamental chemical element ,
rare earth
FVH: new (2007-OCT-25)
 
terminator line      (terminatorLine)
terminator line
 lunar phase
 
terrestrial radiation      (terrestrialRadiation)
terrestrial radiation
 atmospheric radiation greenhouse effect ,
infrared radiation
ES: moved atmospheric_radiation from NT to BT (2007-OCT-8)
 
tertiary mirror      (tertiaryMirror)
tertiary mirror
 telescope mirror Nasmyth focus ,
optical telescope ,
primary mirror ,
reflecting telescope ,
secondary mirror ,
subreflector
FVH: new (2007-SEP-21)
 
  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
Descriptionaltbroadernarrowerrelated
tertiary star      (tertiaryStar)
tertiary star
 companion star primary star ,
secondary star
ES: new (2007-OCT-8)
 
testing      (testing)
testing
combine with other terms
 
thallium      (thallium)
thallium (atomic number 81)
 Tl fundamental chemical element
FVH: new (2007-OCT-25)
 
theoretical astrophysics      (theoreticalAstrophysics)
theoretical astrophysics
 astrophysics
FVH: moved ASTROPHYSICS to BT (2007-OCT-1)
 
theory      (theory)
theory
 research
combine with other terms
 
thermal conductivity      (thermalConductivity)
thermal conductivity
 conduction ,
temperature
 
thermal emission      (thermalEmission)
thermal emission
 emission spectrum free-free emission ,
infrared emission
 
thermal equilibrium      (thermalEquilibrium)
thermal equilibrium
 Saha equation ,
local thermodynamic equilibrium ,
thermal instability ,
thermodynamic equilibrium ,
thermodynamics
 
thermal history      (thermalHistory)
thermal history
combine with other terms
 
thermal instability      (thermalInstability)
thermal instability
 convection ,
local thermodynamic equilibrium ,
thermal equilibrium ,
thermodynamic equilibrium ,
turbulence Earth atmosphere ,
turbulence star atmosphere
 
  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
Descriptionaltbroadernarrowerrelated
thermal property      (thermalProperty)
thermal property
 property
combine with other terms
 
thermal radiation      (thermalRadiation)
thermal radiation
 electromagnetic radiation ,
radiation 		Johnson noise ,
black body radiation ,
infrared radiation
 
thermal stability      (thermalStability)
thermal stability
 Rayleigh number ,
local thermodynamic equilibrium ,
thermodynamic equilibrium
 
thermal structure      (thermalStructure)
thermal structure
 convection ,
turbulence Earth atmosphere ,
turbulence star atmosphere
combine with other terms
 
thermionic emission      (thermionicEmission)
thermionic emission
 dark current cathode ,
electron ,
ion
 
thermodynamic equilibrium      (thermodynamicEquilibrium)
thermodynamic equilibrium
 local thermodynamic equilibrium energy-transfer ,
thermal equilibrium ,
thermal instability ,
thermal stability ,
thermodynamics
 
thermodynamics      (thermodynamics)
thermodynamics
 adiabatic process ,
energy-transfer ,
enthalpy ,
entropy ,
local thermodynamic equilibrium ,
plasma ,
temperature ,
thermal equilibrium ,
thermodynamic equilibrium
 
thermoluminescence      (thermoluminescence)
thermoluminescence
 luminescence
 
thermonuclear reaction      (thermonuclearReaction)
thermonuclear reaction
see nuclear fusion
 
thermosphere      (thermosphere)
thermosphere
 Earth atmosphere ,
exosphere ,
ionosphere ,
mesopause ,
upper atmosphere
 
  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
Descriptionaltbroadernarrowerrelated
thickness      (thickness)
thickness
combine with other terms
 
thin film      (thinFilm)
thin film
 optical film aluminum coating ,
antireflection coating ,
silver coating 		coating ,
mirror ,
optical surface ,
reflection ,
vacuum technique ,
vapor deposition
 
Thomson scattering      (ThomsonScattering)
Thomson scattering
 Compton scattering ,
light scattering ,
radiation scattering 		Rayleigh scattering
 
thorium      (thorium)
thorium (atomic number 90)
 Th fundamental chemical element
FVH: new (2007-OCT-25)
 
three-body problem      (threeBodyProblem)
three-body problem
 three body problem N-body problem ,
celestial mechanics ,
orbit ,
perturbation ,
stellar dynamics ,
two-body problem
 
three-dimensional spectroscopy      (threeDimensionalSpectroscopy)
three-dimensional spectroscopy
 three dimensional spectroscopy spectroscopy three-dimensional spectrum
 
three-dimensional spectrum      (threeDimensionalSpectrum)
three-dimensional spectrum
 three dimensional spectrum spectrum extended object ,
integral field spectrograph ,
long slit spectrum ,
multi-fiber spectrograph ,
multi-slit spectrograph ,
spectrograph slit ,
three-dimensional spectroscopy ,
two-dimensional spectroscopy
FVH: new (2007-SEP-21)
 
thulium      (thulium)
thulium (atomic number 69)
 Tm fundamental chemical element ,
rare earth
FVH: new (2007-OCT-25)
 
tidal disruption      (tidalDisruption)
tidal disruption
 Roche limit ,
differential rotation ,
star cluster ,
tidal distortion ,
tidal friction ,
tidal interaction ,
tidal radius
 
tidal distortion      (tidalDistortion)
tidal distortion
 differential rotation ,
interacting galaxy ,
tidal disruption ,
tidal friction ,
tidal interaction
 
  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
Descriptionaltbroadernarrowerrelated
tidal friction      (tidalFriction)
tidal friction
 Earth-Moon system ,
close binary star ,
interacting binary star ,
interacting galaxy ,
tidal disruption ,
tidal distortion ,
tidal interaction ,
tide
 
tidal interaction      (tidalInteraction)
tidal interaction
 Roche lobe ,
interacting binary star ,
interacting galaxy ,
tidal disruption ,
tidal distortion ,
tidal friction
 
tidal radius      (tidalRadius)
tidal radius
 star cluster ,
tidal disruption
 
tide      (tide)
tide
 atmospheric tide ,
ocean tide ,
polar tide 		tidal friction
 
time measurement      (timeMeasurement)
time measurement
 time determination time
 
time-resolved spectroscopy      (timeResolvedSpectroscopy)
time-resolved spectroscopy
 spectroscopy high-speed photometer ,
variable star
 
time signal      (timeSignal)
time signal
 global positioning system ,
time standard ,
time synchronization
 
time standard      (timeStandard)
time standard
 atomic clock ,
clock ,
global positioning system ,
time signal ,
time synchronization
 
time synchronization      (timeSynchronization)
time synchronization
 time synchronisation UK atomic clock ,
global positioning system ,
radio interferometry ,
time signal ,
time standard ,
very long baseline interferometry
 
time      (time)
time
 Universal Time ,
civil time ,
dynamical time ,
ephemeris time ,
mean solar time ,
sidereal time 		Besselian epoch ,
Earth orbit ,
Earth rotation ,
Gregorian calendar ,
Julian Date ,
Julian epoch ,
astrometric instrument ,
atomic clock ,
calendar ,
chronometer ,
clock ,
ephemeris ,
epoch ,
general theory of relativity ,
time measurement ,
transit instrument ,
transit time ,
year
 
  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
Descriptionaltbroadernarrowerrelated
timing equipment      (timingEquipment)
timing equipment
 timing device clock ,
pendulum
 
tin      (tin)
tin (atomic number 50)
 Sn fundamental chemical element
FVH: new (2007-OCT-25)
 
tip-tilt mirror      (tipTiltMirror)
tip-tilt mirror
 tip tilt mirror active optics ,
seeing ,
segmented optics
 
titanium oxide      (titaniumOxide)
TiO molecule
 TiO L dwarf ,
M star ,
oxygen ,
titanium
FVH: new (2007-OCT-2)
 
titanium      (titanium)
titanium (atomic number 22)
 Ti fundamental chemical element titanium oxide
FVH: new (2007-OCT-25)
 
topography      (topography)
topography
 Earth ,
planet ,
satellite ,
surface of celestial body
combine with other terms
 
torus      (torus)
torus
 circumstellar disk ,
interstellar matter
 
total eclipse      (totalEclipse)
total eclipse
 eclipse annular eclipse ,
eclipsing binary star ,
partial eclipse ,
umbra
 
trace element      (traceElement)
trace element
 chemical element metal abundance
 
tracking      (tracking)
tracking
 autoguider ,
control system ,
pointing accuracy ,
pointing error
 
  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
Descriptionaltbroadernarrowerrelated
trajectory      (trajectory)
trajectory
 orbit
 
transfer function      (transferFunction)
transfer function
 modulation transfer function ,
optical transfer function ,
point spread function
 
transit circle      (transitCircle)
transit circle
 transit instrument transit telescope
 
transit instrument      (transitInstrument)
transit instrument
 astrometric instrument meridian circle ,
transit circle ,
transit telescope 		astrometry ,
meridian observation ,
time ,
transit
 
transition probability      (transitionProbability)
transition probability
 g value ,
gf value ,
line formation ,
line width ,
oscillator strength ,
spectral line
 
transition region      (transitionRegion)
transition region
 chromosphere ,
solar corona
 
transit telescope      (transitTelescope)
transit telescope
 transit instrument zenith telescope meridian observation ,
transit circle ,
transit time
 
transit time      (transitTime)
transit time
 Right Ascension ,
hour angle ,
meridian observation ,
sidereal time ,
time ,
transit telescope
 
transit      (transit)
transit
 astrometry ,
eclipse ,
occultation ,
transit instrument
 
transmission grating      (transmissionGrating)
transmission grating
 diffraction grating objective grating VPH grating ,
echelle grating ,
grism ,
reflection grating
 
  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
Descriptionaltbroadernarrowerrelated
transmission      (transmission)
transmission
 absorption ,
optics ,
reflection ,
refraction ,
transparency
combine with other terms
 
trans-Neptunian object      (transNeptunianObject)
trans-Neptunian object
 TNO Edgeworth-Kuiper belt object Edgeworth-Kuiper belt ,
Oort cloud ,
Solar System ,
asteroid
FVH: new (2007-OCT-2)
 
transparency      (transparency)
transparency
 absorption coefficient ,
atmospheric window ,
opacity ,
transmission
 
transplutonian planet      (transplutonianPlanet)
transplutonian planet
 Solar System
 
transport process      (transportProcess)
transport process
 radiative transfer
 
transverse velocity      (transverseVelocity)
transverse velocity
 velocity proper motion ,
radial velocity ,
space motion
 
trigonometric parallax      (trigonometricParallax)
trigonometric parallax
 parallax Astronomical Unit ,
distance ,
nearby star
 
triple star      (tripleStar)
triple star
 multiple star
FVH: moved MULTIPLE_STARS to BT (2007-OCT-1)
 
tritium      (tritium)
tritium, an isotope of hydrogen
 hydrogen isotope
 
Trojan group      (TrojanGroup)
Trojan group
 minor planet family Amor group ,
Apollo group
 
  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
Descriptionaltbroadernarrowerrelated
tropical year      (tropicalYear)
tropical year
 year Earth orbit
 
Tropic of Cancer      (TropicOfCancer)
Tropic of Cancer
 Tropic of Capricorn ,
solstice ,
summer solstice
 
Tropic of Capricorn      (TropicOfCapricorn)
Tropic of Capricorn
 Tropic of Cancer ,
solstice ,
winter solstice
 
tropopause      (tropopause)
tropopause
 Earth atmosphere ,
stratosphere ,
troposphere
 
troposphere      (troposphere)
troposphere
 Earth ,
Earth atmosphere ,
exosphere ,
tropopause
 
true anomaly      (trueAnomaly)
true anomaly
 orbital anomaly
FVH: moved ANOMALY to BT (2007-OCT-1)
 
true position      (truePosition)
true position
 position apparent position ,
astrometry ,
coordinate system
 
T subdwarf      (TSubdwarf)
T subdwarf
 brown dwarf ,
subdwarf 		T dwarf
FVH: new (2007-OCT-9)
 
T Tauri star      (TTauriStar)
T Tauri star
 TTS ,
YY Orionis star 		emission line star ,
irregular variable star ,
pre-main sequence star 		FU Orionis star ,
classical T Tauri star ,
weak-line T Tauri star 		Herbig-Haro object ,
RW Aurigae star ,
T association ,
emission nebula ,
protostar
FVH: moved yy_orinois_star to ALT, added NT CLASSICAL_T_TAURI_STARS and WEAK_LINE_T_TAURI_STARS (2007-SEP-24)
 
Tully-Fisher relation      (TullyFisherRelation)
Tully-Fisher relation
 statistical relation cosmology ,
galaxy ,
line width ,
redshift
 
  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
Descriptionaltbroadernarrowerrelated
tungsten      (tungsten)
tungsten (atomic number 74)
 W fundamental chemical element
FVH: new (2007-OCT-25)
 
turbidity      (turbidity)
turbidity
 halation ,
photographic emulsion
 
turbulence Earth atmosphere      (turbulenceEarthAtmosphere)
turbulence [Earth atmosphere]
 macroturbulence ,
microturbulence 		Earth atmosphere ,
convection ,
point spread function ,
scintillation ,
seeing ,
thermal instability ,
thermal structure
in Earth's atmosphere
 
turbulence star atmosphere      (turbulenceStarAtmosphere)
turbulence [star atmosphere]
 macroturbulence ,
microturbulence 		convection ,
line broadening ,
stellar atmosphere ,
thermal instability ,
thermal structure
in stellar atmosphere or in interstellar matter
 
turnoff point      (turnoffPoint)
turnoff point
 Hertzsprung-Russell diagram ,
age ,
giant branch ,
globular star cluster ,
main sequence ,
open star cluster
 
twilight      (twilight)
twilight
 Earth atmosphere ,
sky brightness ,
sunlight
 
two-body problem      (twoBodyProblem)
two-body problem
 two body problem Earth-Moon system ,
N-body problem ,
binary star ,
celestial mechanics ,
planet ,
stellar dynamics ,
three-body problem
 
two-color diagram      (twoColorDiagram)
two-color diagram
 two color diagram color index ,
photometry
 
two-color photometry      (twoColorPhotometry)
two-color photometry
 two color photometry broad band photometry BV photometry Johnson photometry ,
Sloan photometry
 
two-dimensional detector      (twoDimensionalDetector)
two-dimensional detector
 two dimensional detector detector CCD detector ,
image tube ,
television detector 		charge-coupled device ,
charge-injection device ,
charge-transfer device ,
flat field ,
image processing ,
pixel ,
television camera
 
  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
Descriptionaltbroadernarrowerrelated
two-dimensional spectroscopy      (twoDimensionalSpectroscopy)
two-dimensional spectroscopy
 two dimensional spectroscopy spectroscopy three-dimensional spectrum ,
two-dimensional spectrum
 
two-dimensional spectrum      (twoDimensionalSpectrum)
two-dimensional spectrum
 two dimensional spectrum spectrum extended object ,
long slit spectrum ,
spectrograph slit ,
two-dimensional spectroscopy
FVH: added RT SPECTROGRAPH_SLITS (2007-SEP-21)
 
two-spectrum binary star      (twoSpectrumBinaryStar)
two-spectrum binary star
 spectrum binary star ,
two spectrum binary star 		spectroscopic binary star
 
Type Ia supernova      (TypeIaSupernova)
Type Ia supernova
 supernova Type Ib supernova ,
Type Ic supernova ,
Type II supernova ,
cosmology
FVH: new (2007-OCT-1)
 
Type Ib supernova      (TypeIbSupernova)
Type Ib supernova
 supernova Type Ia supernova ,
Type Ic supernova ,
Type II supernova
FVH: new (2007-OCT-1)
 
Type Ic supernova      (TypeIcSupernova)
Type Ic supernova
 supernova Type Ia supernova ,
Type Ib supernova ,
Type II supernova
FVH: new (2007-OCT-1)
 
Type II supernova      (TypeIiSupernova)
Type II supernova
 supernova Type Ia supernova ,
Type Ib supernova ,
Type Ic supernova
FVH: new (2007-OCT-1)
 
Thu Jul 3 15:11:33 2008