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
damping constant      (dampingConstant)
damping constant
line formation ,
radiation damping ,
radiative braking
 
Danjon astrolabe      (DanjonAstrolabe)
Danjon astrolabe
astrolabe
 
dark adaption      (darkAdaption)
dark adaption
retinal adaption color vision ,
darkness ,
night vision ,
vision
 
dark cloud      (darkCloud)
dark cloud
interstellar matter C II region
 
dark-current calibration      (darkCurrentCalibration)
dark-current calibration
calibration CCD detector
FVH: new (2007-OCT-3)
 
Dark Energy      (DarkEnergy)
Dark Energy
dark energy Dark Matter ,
Hubble law ,
cold Dark Matter ,
cosmological constant ,
cosmology ,
early universe ,
galaxy count ,
galaxy distribution ,
general theory of relativity ,
redshift distance relation ,
redshift magnitude relation ,
space-time curvature ,
universe
FVH: new (2007-SEP-21)
 
Dark Matter      (DarkMatter)
Dark Matter
intergalactic matter ,
interstellar matter
baryonic Dark Matter ,
cold Dark Matter
Dark Energy ,
Galactic rotation ,
cosmology ,
elementary particle ,
galaxy rotation curve ,
mass distribution
 
dark nebula      (darkNebula)
dark nebula
absorption nebula interstellar matter ,
nebula
Bok globule ,
cometary globule
Wolf diagram ,
globule ,
star formation
 
  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
darkness      (darkness)
darkness
dark adaption ,
diurnal variation ,
electromagnetic radiation ,
optical property ,
visible radiation
 
darkroom      (darkroom)
darkroom
photographic processing ,
photography
 
darmtadtium      (darmtadtium)
darmtadtium (atomic number 110)
Ds fundamental chemical element
FVH: new (2007-OCT-25)
 
DA star      (DaStar)
DA white dwarf star
white dwarf DB star ,
DO star
FVH: modified from original DA_star (2007-OCT-1)
 
data acquisition      (dataAcquisition)
data acquisition
counter ,
counting ,
data analysis ,
digital recorder ,
observation ,
observing technique
 
data analysis      (dataAnalysis)
data analysis
analysis error analysis data acquisition ,
data processing ,
data reduction ,
data storage ,
determination
 
database      (database)
database
data base computing data center ,
data retrieval ,
data storage ,
virtual observatory
 
data center      (dataCenter)
data center
computer ,
data processing ,
data reduction ,
data retrieval ,
data storage ,
database ,
on-line system ,
virtual observatory
 
data processing      (dataProcessing)
data processing
computing Monte Carlo technique ,
data reduction ,
numerical analysis
auto-correlation ,
clean method ,
computer program ,
computer ,
cross-correlation ,
data analysis ,
data center ,
data retrieval ,
data storage ,
error analysis ,
observing technique ,
on-line system ,
reduction method
 
data reduction      (dataReduction)
data reduction
data processing computer ,
data analysis ,
data center ,
data retrieval ,
data storage ,
error analysis ,
fine analysis ,
reduction method
 
  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
data retrieval      (dataRetrieval)
data retrieval
computing data center ,
data processing ,
data reduction ,
data storage ,
database ,
virtual observatory
 
data storage      (dataStorage)
data storage
computing RAID array ,
analog recorder
computer ,
data analysis ,
data center ,
data processing ,
data reduction ,
data retrieval ,
database
 
DB star      (DbStar)
DB white dwarf star
helium-rich star ,
white dwarf
DA star ,
DO star
FVH: new (2007-OCT-1)
 
DDO photometry      (DdoPhotometry)
DDO photometry
medium band photometry ,
photometric system
 
dead-time calibration      (deadTimeCalibration)
dead-time calibration
calibration
FVH: new (2007-OCT-3)
 
decay oscillation      (decayOscillation)
decay of oscillation
amplitude ,
oscillation ,
radiation damping
 
deceleration      (deceleration)
deceleration
acceleration ,
deceleration parameter
 
deceleration parameter      (decelerationParameter)
deceleration parameter
q-parameter cosmological parameter cosmological distance scale ,
deceleration
 
Declination      (Declination)
Declination
celestial latitude latitude ,
equatorial coordinate system
Right Ascension ,
celestial equator ,
equator ,
equatorial zone
 
deconvolution      (deconvolution)
deconvolution
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
Descriptionaltbroadernarrowerrelated
defect      (defect)
defect
combine with other terms
 
deformation      (deformation)
deformation
combine with other terms
 
degenerate dwarf      (degenerateDwarf)
degenerate dwarf star
degenerate star white dwarf
 
degenerate matter      (degenerateMatter)
degenerate matter
matter black hole ,
degenerate star
 
degenerate star      (degenerateStar)
degenerate star
degenerate matter ,
subluminous star
degenerate dwarf ,
neutron star ,
pulsar
collapsed star ,
mass-radius relation
 
delta delphini star      (deltaDelphiniStar)
delta Delphini star
delta Scuti star ,
pulsating variable star
 
delta Scuti star      (deltaScutiStar)
delta Scuti star
AI Velorum star multi-periodic variable star ,
pulsating variable star ,
short period variable star
delta delphini star He II ionization zone ,
dwarf Cepheid ,
kappa mechanism ,
non-radial pulsation ,
radial pulsation
 
dense cloud      (denseCloud)
dense cloud
interstellar matter ,
nebula
 
densitometer      (densitometer)
densitometer
measuring instrument densitometry ,
microdensitometer
 
densitometry      (densitometry)
densitometry
densitometer
 
  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
density bounded      (densityBounded)
density bounded
density
 
density      (density)
density
specific gravity atmospheric density ,
electron density ,
energy density ,
gas density ,
mass density
Rankine-Hugoniot relation ,
density bounded ,
density distribution ,
density fluctuation ,
density perturbation ,
density variation ,
density wave model
 
density distribution      (densityDistribution)
density distribution
density
 
density fluctuation      (densityFluctuation)
density fluctuation
density
 
density perturbation      (densityPerturbation)
density perturbation
density
 
density variation      (densityVariation)
density variation
density
 
density wave model      (densityWaveModel)
density wave model
density
 
descending node      (descendingNode)
descending node
node
FVH: moved NODES to BT (2007-OCT-1)
 
design      (design)
design
engineering research
combine with other terms
 
de Sitter universe      (deSitterUniverse)
de Sitter universe
cosmology
 
  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
destruction      (destruction)
destruction
combine with other terms
 
detached binary star      (detachedBinaryStar)
detached binary star
binary star W Ursae Majoris star semi-detached binary star
 
detection      (detection)
detection
signal detection
combine with other terms
 
detector array      (detectorArray)
detector array
array array processor
 
detector      (detector)
detector
instrument X-ray detector ,
dust detector ,
infrared detector ,
multi-channel detector ,
photographic emulsion ,
photomultiplier tube ,
radiometer ,
superconducting tunnel junction ,
synchronous detector ,
two-dimensional detector ,
ultraviolet detector
charge-coupled device ,
charge-injection device ,
charge-transfer device ,
limiting magnitude ,
pixel ,
quantum efficiency ,
receiver ,
remote sensing ,
semiconductor device ,
sensitivity ,
shot noise ,
shutter ,
signal detection ,
telescope instrument
FVH: added NT SUPERCONDUCTING_TUNNEL_JUNCTION (2007-SEP-21)
only the broad classes are shown below; specific type will be found under these, or from the hierarchical list
 
determination      (determination)
determination
data analysis ,
measurement ,
quantization
 
deuterium      (deuterium)
deuterium, an isotope of hydrogen
hydrogen isotope
 
D galaxy      (DGalaxy)
rotationally symmetric elliptical galaxy (Yerkes classification scheme)
elliptical galaxy ,
galaxy
cD galaxy Yerkes classification ,
massive galaxy
 
diagram      (diagram)
diagram
combine with other terms
 
diameter      (diameter)
diameter
dimension angular diameter ,
isophotal diameter
Baade-Wesselink method ,
occultation ,
surface gravity
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
Descriptionaltbroadernarrowerrelated
diamond ring effect      (diamondRingEffect)
diamond ring effect
Sun ,
bailys bead ,
solar eclipse
 
dichroic mirror      (dichroicMirror)
dichroic mirror
mirror optical film ,
optical filter
 
Dicke radiometer      (DickeRadiometer)
Dicke radiometer
radiometer
 
differential equation      (differentialEquation)
differential equation
mathematical analysis
 
differential image motion monitor      (differentialImageMotionMonitor)
differential image-motion monitor
DIMM seeing monitor
FVH: new (2007-SEP-21)
 
differential rotation      (differentialRotation)
differential rotation
rotation Galactic rotation ,
galaxy ,
galaxy rotation curve ,
globular star cluster ,
tidal disruption ,
tidal distortion
FVH: added RT Galactic_rotation, RT galaxy_rotation_curve (2007-OCT-5)
 
diffraction      (diffraction)
diffraction
X-ray diffraction Airy disk ,
Rayleigh criterion ,
diffraction patterns ,
interference wave ,
shadow band
 
diffraction grating      (diffractionGrating)
diffraction grating
grating optical component VPH grating ,
echelle grating ,
objective grating ,
reflection grating ,
transmission grating
grating spectrograph ,
grism ,
spectrum ,
spectrograph
 
diffraction patterns      (diffractionPatterns)
diffraction patterns
diffraction
 
diffuse nebula      (diffuseNebula)
diffuse nebula
nebula
 
  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
diffuse radiation      (diffuseRadiation)
diffuse radiation
combine with other terms
 
diffusion      (diffusion)
diffusion
combine with other terms
 
digital image      (digitalImage)
digital image
image
 
digital recorder      (digitalRecorder)
digital recorder
data acquisition
 
dimension      (dimension)
dimension
diameter
combine with other terms
 
diode array      (diodeArray)
diode array
array ,
multi-channel detector
reticon array
 
diode      (diode)
diode
electronic equipment
 
dioptric system      (dioptricSystem)
dioptric system
optical system lens ,
optical telescope
 
dipole antenna      (dipoleAntenna)
dipole antenna
dipole antennas antenna ,
directional antenna
dipole
 
dipole      (dipole)
dipole
half-wave dipole dipole antenna ,
electric charge ,
electric dipole
 
  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
dirac cosmology      (diracCosmology)
Dirac cosmology
cosmology
 
directional antenna      (directionalAntenna)
directional antenna
directional antennas antenna Mills cross antenna ,
Yagi antenna ,
dipole antenna ,
parabolic antenna
 
dirty snowball theory      (dirtySnowballTheory)
dirty snowball theory
comet ,
nucleus celestial object
 
discoloration      (discoloration)
discoloration
combine with other terms
 
discoveries      (discoveries)
discoveries
research ,
space exploration
combine with other terms
 
discrete radio source      (discreteRadioSource)
discrete radio source
radio source
 
dish antenna      (dishAntenna)
dish antenna
dish antennas radio telescope antenna ,
parabolic reflector ,
radar telescope
 
disintegration      (disintegration)
disintegration
combine with other terms
 
disk      (disk)
discs UK
disk
accretion disk ,
circumstellar disk ,
gaseous disk ,
gravitating disk
disk flaring ,
disk galaxy ,
disk population ,
disk star
 
disk flaring      (diskFlaring)
disc flaring UK
disk flaring
disk ,
morphology
 
  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
disk galaxy      (diskGalaxy)
disc galaxy UK
disk galaxy
galaxy lenticular galaxy ,
spiral galaxy
disk ,
mass distribution
 
disk population      (diskPopulation)
disc population UK
disk population
population II star Galactic plane ,
disk ,
stellar population
 
disk star      (diskStar)
disc star UK
disk star
population II star Galactic plane ,
disk ,
gaseous disk
 
dispersion      (dispersion)
dispersion
combine with other terms
 
disruption      (disruption)
disruption
combine with other terms
 
dissipation      (dissipation)
dissipation
combine with other terms
 
distance      (distance)
distance
Bodes law ,
absolute magnitude ,
distance indicator ,
distance measurement ,
distance modulus ,
distance scale ,
light year ,
parallax ,
parsec ,
range finder ,
trigonometric parallax
 
distance indicator      (distanceIndicator)
distance indicator
distance ,
distance measurement ,
distance modulus ,
distance scale
 
distance measurement      (distanceMeasurement)
distance measurement
Cepheid distance ,
Faber-Jackson distance ,
RGB tip distance ,
SBF distance
distance ,
distance indicator ,
distance scale
 
distance modulus      (distanceModulus)
distance modulus
modulus absolute magnitude ,
distance ,
distance indicator ,
distance scale ,
parallax
 
  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
distance scale      (distanceScale)
distance scale
cosmological distance scale Astronomical Unit ,
distance ,
distance indicator ,
distance measurement ,
distance modulus ,
parsec
 
distortion      (distortion)
distortion
optical aberration astigmatism ,
chromatic aberration ,
comatic aberration ,
field curvature ,
optical system ,
spherical aberration
 
distribution function      (distributionFunction)
distribution function
function distribution in space ,
frequency distribution ,
statistics
in mathematics
 
distribution in space      (distributionInSpace)
distribution in space
distribution function
combine with other terms
 
diurnal parallax      (diurnalParallax)
diurnal parallax
parallax horizontal parallax zenith distance
 
diurnal phenomena      (diurnalPhenomena)
diurnal phenomena
diurnal variation
 
diurnal variation      (diurnalVariation)
diurnal variation
darkness ,
diurnal phenomena
 
D layer      (DLayer)
D layer
D region Earth atmosphere ,
ionosphere
 
D line      (DLine)
D line
spectral line absorption spectrum
 
dome      (dome)
dome
telescope dome dome seeing ,
observatory ,
telescope ,
temperature control ,
ventilation
excluding lunar dome
 
  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
dome seeing      (domeSeeing)
dome seeing
seeing dome ,
ventilation
 
Doppler broadening      (DopplerBroadening)
Doppler broadening
line broadening Doppler effect ,
Stark broadening ,
Zeeman splitting ,
line width ,
natural line width ,
pressure broadening
 
Doppler effect      (DopplerEffect)
Doppler effect
blueshift ,
redshift
Doppler broadening ,
line shift ,
radar ,
radial velocity ,
spectroscopic analysis ,
spectroscopic binary star ,
stellar motion
 
DO star      (DoStar)
DO white dwarf star
white dwarf PG1159 star DA star ,
DB star
FVH: new (2007-OCT-9)
 
double galaxy      (doubleGalaxy)
double galaxy
binary galaxy binary system ,
galaxy
companion galaxy ,
galaxy merger
 
double-mode Cepheid      (doubleModeCepheid)
double-mode Cepheid
beat_Cepheid ,
double mode Cepheid
Cepheid ,
double-mode variable star ,
pulsating variable star
double-mode pulsation
 
double-mode pulsation      (doubleModePulsation)
double-mode pulsation
double mode pulsation multi-periodic pulsation double-mode Cepheid ,
double-mode variable star ,
pulsating variable star
 
double-mode variable star      (doubleModeVariableStar)
double-mode variable star
double mode variable star multi-periodic variable star ,
pulsating variable star
RR Lyrae star ,
double-mode Cepheid
double-mode pulsation
 
double quasar      (doubleQuasar)
double quasar
gravitationally lensed source gravitational deflection ,
gravitational lensing ,
quasar
 
DQ Herculis star      (DqHerculisStar)
DQ Herculis star
eclipsing binary star ,
slow nova
 
  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
dredge up      (dredgeUp)
dredge up
convection ,
giant ,
metal abundance ,
stellar atmosphere ,
stellar interior
 
drift scan      (driftScan)
drift scan
photometry ,
radio structure ,
surface photometry
 
drift wave      (driftWave)
drift wave
wave
 
drive      (drive)
drive
coelostat ,
control system ,
siderostat ,
telescope
 
dubnium      (dubnium)
dubnium (atomic number 105)
Db fundamental chemical element
FVH: new (2007-OCT-25)
 
dust cloud      (dustCloud)
dust cloud
cloud ,
interstellar matter
dust ,
interstellar dust
 
dust detector      (dustDetector)
dust detector
detector dust
 
dust      (dust)
dust
cosmic dust intergalactic matter ,
interstellar matter
interplanetary dust ,
interstellar dust ,
zodiacal dust
comet ,
dust cloud ,
dust detector ,
dust grain ,
dust nebula ,
dust shell ,
dust storm ,
gas to dust ratio
 
dust grain      (dustGrain)
dust grain
interstellar matter adsorption ,
dust
 
dust nebula      (dustNebula)
dust nebula
interstellar matter ,
nebula
dust
 
  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
dust shell      (dustShell)
dust shell
circumstellar shell ,
shell
circumstellar dust ,
dust ,
symbiotic star
 
dust storm      (dustStorm)
dust storm
dust ,
planet ,
surface of celestial body
 
dwarf Cepheid      (dwarfCepheid)
dwarf Cepheid
irregular variable star ,
multi-periodic variable star ,
pulsating variable star
Cepheid ,
delta Scuti star
 
dwarf      (dwarf)
dwarf star
main sequence star A dwarf ,
B dwarf ,
F dwarf ,
G dwarf ,
K dwarf ,
M dwarf ,
O dwarf ,
black dwarf ,
flare star ,
late-type dwarf ,
nearby dwarf
brown dwarf ,
low-luminosity star ,
low-mass star ,
luminosity classification ,
main sequence ,
subdwarf
the term alone refers to main sequence star, but subterms may refer to evolved star
 
dwarf galaxy      (dwarfGalaxy)
dwarf galaxy
galaxy ,
peculiar galaxy
 
dwarf nova      (dwarfNova)
dwarf nova
DN cataclysmic variable star ,
eruptive binary star
SU Ursae Majoris star ,
SX Arietis star ,
U Geminorum star ,
WZ Sagittae star ,
Z Camelopardalis star
AM Canum Venaticorum star ,
UV Persei star ,
UX Ursae Majoris star ,
X-ray binary star ,
accretion disk ,
emission line star
FVH: total update (2007-SEP-24)
 
dwarf planet      (dwarfPlanet)
dwarf planet
rotating body Ceres ,
Pluto
planet
 
dynamical evolution      (dynamicalEvolution)
dynamical evolution
evolution
 
dynamical friction      (dynamicalFriction)
dynamical friction
friction radiative braking
 
dynamical parallax      (dynamicalParallax)
dynamical parallax
parallax binary star ,
kinematic parallax ,
moving cluster parallax
 
  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
dynamical time      (dynamicalTime)
dynamical time
time
 
dynamics      (dynamics)
dynamics
combine with other terms
 
dynamo theory      (dynamoTheory)
dynamo theory
magnetic field
 
dysprosium      (dysprosium)
dysprosium (atomic number 66)
Dy fundamental chemical element ,
rare earth
FVH: new (2007-OCT-25)
 

Thu Jul 3 16:30:01 2008