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
Saha equation      (SahaEquation)
Saha equation
 ion ,
thermal equilibrium
 
samarium      (samarium)
samarium (atomic number 62)
 Sm fundamental chemical element ,
rare earth
FVH: new (2007-OCT-25)
 
sampling      (sampling)
sampling
combine with other terms
 
Saros cycle      (SarosCycle)
Saros cycle
 lunar eclipse ,
lunar phase ,
metonic cycle
 
satellite-borne instrument      (satelliteBorneInstrument)
satellite-borne instrument
 satellite borne instrument X-ray astronomy ,
airplane-borne instrument ,
balloon-borne instrument ,
cosmic ray astronomy ,
gamma-ray astronomy ,
ground-based astronomy ,
infrared astronomy ,
millimeter astronomy ,
rocket-borne instrument ,
space probe instrument ,
space telescope ,
ultraviolet astronomy
 
satellite laser ranging      (satelliteLaserRanging)
satellite laser ranging
 laser ranging artificial satellite ,
laser ,
lunar laser ranging ,
optical radar
 
satellite      (satellite)
satellite
 Moon ,
galilean satellite ,
planet satellite 		Solar System ,
global positioning system ,
planetesimal ,
planet ,
protoplanet ,
rill ,
surface of celestial body ,
topography ,
volcano
natural satellite; see artifical_satellite
 
Saturn      (Saturn)
Saturn
 Jovian planet ,
planet 		Solar System
FVH: new (2007-SEP-24)
 
SBF distance      (SbfDistance)
surface brightness fluctuation distance
 SBF distance measurement elliptical galaxy
ES: new (2007-OCT-8)
 
  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
scale height      (scaleHeight)
scale height
 Earth atmosphere ,
atmosphere ,
atmospheric density ,
stellar atmosphere
 
scandium      (scandium)
scandium (atomic number 21)
 Sc fundamental chemical element ,
rare earth
FVH: new (2007-OCT-25)
 
scattering      (scattering)
scattering
 Compton scattering ,
Mie scattering ,
atmospheric extinction ,
elementary particle scattering ,
gamma-ray scattering ,
light scattering 		radiation scattering ,
reflection ,
refraction
 
Schmidt camera      (SchmidtCamera)
Schmidt camera
 camera ,
photographic instrument 		Schmidt telescope ,
corrector plate
 
Schmidt telescope      (SchmidtTelescope)
Schmidt telescope
 catadioptric system ,
photographic instrument ,
reflecting telescope 		Baker-Nunn camera ,
Maksutov telescope ,
Schmidt camera ,
corrector plate ,
objective prism ,
wide-field telescope
 
Schwarzschild metric      (SchwarzschildMetric)
Schwarzschild metric
 general theory of relativity ,
gravitational field ,
ionization ,
orbit ,
space-time singularity
 
Schwarzschild radius      (SchwarzschildRadius)
Schwarzschild radius
 black hole ,
general theory of relativity
limiting radius of black hole
 
scientific field      (scientificField)
scientific and related field
 Earth sciences ,
aeronomy ,
astrobiology ,
astrology ,
astronomy ,
astrophysics ,
atomic physics ,
biology ,
celestial mechanics ,
chemistry ,
engineering ,
fluid mechanics ,
mathematics
 
scintillation counter      (scintillationCounter)
scintillation counter
 counter Cerenkov counter image tube ,
phosphorescence ,
phosphorescent scintillation ,
photomultiplier tube
 
scintillation      (scintillation)
scintillation
 atmospheric scintillation ,
interplanetary scintillation ,
interstellar scintillation ,
ionospheric scintillation ,
phosphorescent scintillation 		Earth ,
Earth atmosphere ,
atmosphere ,
atmospheric refraction ,
speckle ,
turbulence Earth 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
S Doradus star      (SDoradusStar)
S Doradus star
 P Cygni star early-type variable star ,
emission line star ,
shell star 		P Cygni line profile
 
seaborgium      (seaborgium)
seaborgium (atomic number 106)
 Sg fundamental chemical element
FVH: new (2007-OCT-25)
 
search for extraterrestrial life      (searchForExtraterrestrialLife)
search for extraterrestrial life
 SETI extraterrestrial intelligence ,
extraterrestrial life
FVH: added RT EXTRATERRESTRIAL_INTELLIGENCE (2007-OCT-1)
FVH: explicit wording of token; SETI to ALT (2007-OCT-4)
 
seasonal phenomena      (seasonalPhenomena)
seasonal phenomena
combine with other terms
 
season      (season)
season
combine with other terms
 
secondary cosmic ray      (secondaryCosmicRay)
secondary cosmic ray
 cosmic ray shower ,
cosmic ray
 
secondary mirror      (secondaryMirror)
secondary mirror
 telescope mirror Cassegrain antenna ,
Cassegrain focus ,
optical telescope ,
primary mirror ,
reflecting telescope ,
subreflector ,
tertiary mirror
 
secondary star      (secondaryStar)
secondary star
 companion star primary star ,
tertiary star
ES: new (2007-OCT-8)
 
secular parallax      (secularParallax)
secular parallax
 parallax moving cluster parallax ,
proper motion ,
star association
 
seeing monitor      (seeingMonitor)
seeing monitor
 optical instrument differential image motion monitor optical observatory ,
seeing ,
site testing
 
  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
seeing      (seeing)
seeing
 dome seeing Earth atmosphere ,
active optics ,
adaptive optics ,
atmospheric refraction ,
atmospheric scintillation ,
point spread function ,
seeing monitor ,
site testing ,
speckle interferometry ,
speckle ,
tip-tilt mirror ,
turbulence Earth atmosphere
 
segmented optics      (segmentedOptics)
segmented optics
 adaptive optics ,
multiple mirror telescope ,
tip-tilt mirror ,
very large telescope
 
seismology      (seismology)
seismology
 asteroseismology ,
helioseismology 		Earth ,
stellar oscillation ,
vibration
 
selection effect      (selectionEffect)
selection effect
 error correction ,
statistics
combine with other terms
 
selective absorption      (selectiveAbsorption)
selective absorption
 gas to dust ratio ,
interstellar matter ,
interstellar reddening ,
reddening ,
reddening law
 
selenium      (selenium)
selenium (atomic number 34)
 Se fundamental chemical element
FVH: new (2007-OCT-25)
 
selenology      (selenology)
selenology
 Moon
 
self-absorption      (selfAbsorption)
self-absorption
 self absorption spectrum
 
self-calibration method      (selfCalibrationMethod)
self-calibration method
 self calibration method calibration
 
semi-barium star      (semiBariumStar)
semi-barium star
 semibarium star barium 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
semiconductor device      (semiconductorDevice)
semiconductor device
 charge-coupled device ,
charge-injection device ,
charge-transfer device ,
photovoltaic cell 		Gunn diode ,
detector
 
semi-detached binary star      (semiDetachedBinaryStar)
semi-detached binary star
 semidetached binary star binary star ,
close binary star 		detached binary star
 
semimajor axis      (semimajorAxis)
semimajor axis
 semi-major axis orbital element major axis binary star ,
planet
 
semiminor axis      (semiminorAxis)
semiminor axis
 semi-minor axis minor axis
 
semi-regular variable star      (semiRegularVariableStar)
semi-regular variable star
 semiregular variable star late-type giant ,
pulsating variable star ,
variable star 		RV Tauri star ,
S Vulpeculae star 		Mira variable star ,
irregular variable star ,
supergiant
 
sensitivity      (sensitivity)
sensitivity
 detector ,
integration time ,
limiting magnitude ,
polar diagram ,
precision ,
resolution ,
signal detection ,
signal-to-noise ratio
 
sensitometer      (sensitometer)
sensitometer
 measuring instrument
 
separation      (separation)
separation
 binary star ,
occulting disk ,
visual binary star
combine with other terms
 
sextant      (sextant)
sextant
 astrometric instrument ,
instrument 		altitude angle
 
Seyfert galaxy      (SeyfertGalaxy)
Seyfert galaxy
 peculiar galaxy BL Lacertae object ,
Markarian galaxy ,
Seyfert nucleus ,
X-ray source ,
compact nucleus ,
emission line galaxy ,
liner galaxy ,
massive object
 
  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
Seyfert nucleus      (SeyfertNucleus)
Seyfert nucleus
 active galactic nucleus ,
compact nucleus ,
emission line galaxy 		Seyfert galaxy
 
S galaxy      (SGalaxy)
spiral galaxy (Yerkes classification scheme)
 spiral galaxy Yerkes classification
FVH: new (2007-OCT-12)
 
shadow band      (shadowBand)
shadow band
 diffraction ,
interference wave ,
solar eclipse
 
shaped reflector      (shapedReflector)
shaped reflector
 radio telescope
 
shell burning      (shellBurning)
shell burning
 carbon burning ,
helium burning ,
hydrogen burning ,
nuclear fusion
nuclear fusion in shell
 
shell      (shell)
shell
 circumstellar shell ,
convective shell ,
dust shell 		shell star
 
shell star      (shellStar)
shell star
 S Doradus star ,
Z Andromedae star ,
gamma Cassiopeiae star 		P Cygni line profile ,
circumstellar shell ,
shell
ES: deleted BT emission_line_star (2007-OCT-8)
 
shepherd satellite      (shepherdSatellite)
shepherd satellite
 planetary ring ,
resonance gap
 
shock      (shock)
shock
 collisional plasma ,
ionization ,
stellar wind ,
supernova
combine with other terms
 
shock wave      (shockWave)
shock wave
 bow shock ,
ionizing shock wave 		Rankine-Hugoniot relation ,
jump condition ,
sound speed ,
supernova envelope ,
velocity field ,
wave propagation
 
  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
short period variable star      (shortPeriodVariableStar)
short period variable star
 beta Cephei star ,
delta Scuti star
 
shot noise      (shotNoise)
shot noise
 noise detector ,
electronic equipment
 
shutter      (shutter)
shutter
 camera ,
detector
FVH: new (2007-SEP-21)
 
sidelobe      (sidelobe)
sidelobe
 lobe [telescope beam] polar diagram ,
radio antenna ,
resolution
 
sidereal time      (siderealTime)
sidereal time
 S.T. time Earth ,
civil time ,
equation of the equinox ,
hour angle ,
transit time ,
year
 
siderostat      (siderostat)
siderostat
 altazimuth mounting ,
coelostat ,
drive ,
heliostat ,
telescope mounting
 
sigma8      (sigma8)
the normalization factor of the cosmological matter power spectrum
 sigma_8 cosmological parameter
FVH: new (2007-OCT-24)
 
signal analysis      (signalAnalysis)
signal analysis
 analysis signal detection ,
signal processing
 
signal detection      (signalDetection)
signal detection
 detection detector ,
limiting magnitude ,
sensitivity ,
signal analysis ,
signal processing
 
signal processing      (signalProcessing)
signal processing
 analysis signal analysis ,
signal detection
 
  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
signal-to-noise ratio      (signalToNoiseRatio)
signal to noise ratio
 SNR ,
signal to noise ratio 		background noise ,
integration time ,
limiting magnitude ,
noise ,
sensitivity ,
sky noise
 
silicon burning      (siliconBurning)
silicon burning
 nuclear fusion ,
nucleosynthesis 		carbon burning ,
helium burning ,
hydrogen burning ,
silicon
 
silicon monoxide      (siliconMonoxide)
SiO molecule
 SiO SiO maser ,
silicon
FVH: new (2007-OCT-2)
FVH: explicit wording of token (2007-OCT-4)
 
silicon      (silicon)
silicon (atomic number 14)
 Si fundamental chemical element silicon burning ,
silicon monoxide ,
silicon star
FVH: new (2007-OCT-25)
 
silicon star      (siliconStar)
silicon star
 Ap star ,
metal-rich star 		silicon
 
silver coating      (silverCoating)
silver coating
 coating ,
thin film 		aluminum coating ,
optical surface ,
silver
 
silver      (silver)
silver (atomic number 47)
 Ag fundamental chemical element silver coating
FVH: new (2007-OCT-25)
 
simulation      (simulation)
simulation
 computer simulation model
 
singularity      (singularity)
singularity
 naked singularity ,
space-time singularity
 
SiO maser      (SiOMaser)
SiO maser
 maser OH maser ,
interstellar matter ,
radio source ,
silicon monoxide ,
water maser
 
  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
site protection      (siteProtection)
site protection
 air pollution ,
light pollution ,
observatory
 
site testing      (siteTesting)
site testing
 observatory ,
pollution ,
seeing ,
seeing monitor ,
sky brightness
 
sky brightness      (skyBrightness)
sky brightness
 night sky brightness Milky Way galaxy ,
airglow ,
atmospheric radiation ,
aurora ,
background radiation ,
site testing ,
sunlight ,
twilight ,
zodiacal light
 
sky noise      (skyNoise)
sky noise
 noise background noise ,
signal-to-noise ratio
 
sky      (sky)
sky
combine with other terms
 
sky survey      (skySurvey)
sky survey
 survey atlas ,
catalog ,
finding chart ,
map
 
slit mask      (slitMask)
slit mask
 spectrograph slit
FVH: new (2007-OCT-3)
 
Sloan photometry      (SloanPhotometry)
Sloan photometry
 SDSS photometry broad band photometry ,
photometric system 		two-color photometry
FVH: new (2007-SEP-21)
 
slow nova      (slowNova)
slow nova
 novoid nova DQ Herculis star fast nova ,
recurrent nova
 
Small Magellanic Cloud      (SmallMagellanicCloud)
Small Magellanic Cloud
 SMC Magellanic cloud Large Magellanic Cloud
 
  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
sodium      (sodium)
sodium (atomic number 11)
 Na fundamental chemical element
FVH: new (2007-OCT-25)
 
soft gamma-ray repeater      (softGammaRayRepeater)
soft gamma-ray repeater
 gamma-ray source ,
irregular variable star ,
magnetar
ES: new (2007-OCT-8)
 
solar activity      (solarActivity)
solar activity
 solar storm Maunder minimum ,
active Sun ,
activity index ,
aurora ,
butterfly diagram ,
coronal loop ,
emerging flux ,
ephemeral active region ,
flare ,
heliosphere ,
magnetic storm ,
prominence ,
solar atmosphere ,
solar cycle ,
solar wind ,
sunspot cycle ,
sunspot group ,
sunspot number ,
sunspot
 
solar atmosphere      (solarAtmosphere)
solar atmosphere
 stellar atmosphere chromosphere ,
heliopause ,
heliosphere ,
limb darkening ,
line formation ,
solar activity ,
solar corona ,
solar physics ,
solar storm ,
solar surface ,
solar-terrestrial relation ,
solar wind
 
solar constant      (solarConstant)
solar constant
 Sun ,
electromagnetic radiation ,
radiation ,
solar physics ,
sunlight
 
solar corona      (solarCorona)
solar corona
 corona m region K corona ,
Sun ,
coronagraph ,
coronal dimming ,
coronal hole ,
coronal line ,
coronal loop ,
coronal mass ejection ,
coronal plume ,
coronal transient ,
coronal wave ,
solar atmosphere ,
transition region
 
solar cycle      (solarCycle)
solar cycle
 active Sun ,
butterfly diagram ,
quiet Sun ,
solar activity ,
solar physics ,
sunspot cycle ,
sunspot number
 
solar day      (solarDay)
solar day
 Universal Time ,
ephemeris time
 
solar eclipse      (solarEclipse)
solar eclipse
 eclipse Moon ,
Sun ,
bailys bead ,
diamond ring effect ,
flash spectrum ,
penumbra ,
shadow band ,
umbra ,
zone of totality
 
solar filament      (solarFilament)
solar filament
 Sun ,
chromosphere ,
flare ,
prominence ,
sunspot
 
  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
solar interior      (solarInterior)
solar interior
 stellar interior solar neutrino problem ,
solar physics ,
stellar evolution ,
stellar structure
 
solar motion      (solarMotion)
solar motion
 motion antapex ,
apex
with respect to nearby star
 
solar nebula      (solarNebula)
solar nebula
 Solar System ,
planet ,
protoplanetary nebula ,
protoplanet
 
solar neutrino problem      (solarNeutrinoProblem)
solar neutrino problem
 neutrino ,
nuclear reaction ,
solar interior
 
solar observatory      (solarObservatory)
solar observatory
 coronagraph ,
solar optical telescope ,
solar radio telescope ,
solar telescope
 
solar optical telescope      (solarOpticalTelescope)
solar optical telescope
 solar telescope solar observatory ,
solar radio telescope
 
solar oscillation      (solarOscillation)
solar oscillation
 five minute oscillation stellar oscillation asteroseismology ,
helioseismology
 
solar parallax      (solarParallax)
solar parallax
 Astronomical Unit ,
Earth orbit
 
solar physics      (solarPhysics)
solar physics
 Sun ,
forbush effect ,
solar atmosphere ,
solar constant ,
solar cycle ,
solar interior ,
solar telescope ,
solar-terrestrial relation
 
solar-planetary relation      (solarPlanetaryRelation)
solar-planetary relation
 solar planetary relation solar-terrestrial relation Solar System ,
Sun ,
planet
 
  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
solar radio telescope      (solarRadioTelescope)
solar radio telescope
 solar telescope solar observatory ,
solar optical telescope
 
solar      (solar)
solar
see under Sun
 
solar storm      (solarStorm)
solar storm
 solar activity solar atmosphere
 
solar surface      (solarSurface)
solar surface
 Sun ,
photosphere ,
solar atmosphere ,
supergranulation
 
Solar System      (SolarSystem)
Solar System
 planetary system Bodes law ,
Ceres ,
Earth ,
Earth-Moon system ,
Edgeworth-Kuiper belt ,
Jupiter ,
Kreutz sungrazer ,
Mars ,
Mercury ,
Neptune ,
Pluto ,
Saturn ,
Sun ,
Uranus ,
Venus ,
asteroid ,
comet ,
extrasolar planet ,
origin ,
planetary alignment ,
planetary theory ,
planetesimal ,
planet ,
pre-solar nebula ,
protoplanet ,
satellite ,
solar nebula ,
solar-planetary relation ,
synodic period ,
trans-Neptunian object ,
transplutonian planet
not a complete list of terms
 
solar telescope      (solarTelescope)
solar telescope
 tower telescope telescope radioheliograph ,
solar optical telescope ,
solar radio telescope 		heliostat ,
solar observatory ,
solar physics
 
solar-terrestrial relation      (solarTerrestrialRelation)
solar-terrestrial relation
 solar terrestiral relation solar-planetary relation Earth ,
Sun ,
solar atmosphere ,
solar physics
 
solar wind      (solarWind)
solar wind
 interplanetary matter ,
plasma ,
stellar wind 		Poynting-Robertson effect ,
coronal hole ,
heliopause ,
heliosphere ,
interplanetary gas ,
interstellar wind ,
radiation pressure ,
solar activity ,
solar atmosphere
 
solstice      (solstice)
solstice
 summer solstice ,
winter solstice 		Tropic of Cancer ,
Tropic of Capricorn ,
ecliptic ,
equinox
 
sound speed      (soundSpeed)
speed of sound
 speed of sound acoustic wave ,
shock 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
Descriptionaltbroadernarrowerrelated
source      (source)
astronomical source
 X-ray source ,
compact source ,
cosmic ray source ,
extended source ,
field star ,
gamma-ray source ,
gravitationally lensed source ,
infrared source ,
non-thermal source ,
radio source ,
variable source
FVH: new (2007-NOV-4)
 
South Celestial Pole      (SouthCelestialPole)
South Celestial Pole
 SCP ,
S.C.P. 		celestial pole North Celestial Pole
 
South Ecliptic Pole      (SouthEclipticPole)
South Ecliptic Pole
 SEP ,
S.E.P. 		ecliptic pole North Ecliptic Pole
 
southern hemisphere      (southernHemisphere)
southern hemisphere
 northern hemisphere
 
South Galactic Pole      (SouthGalacticPole)
South Galactic Pole
 SGP ,
S.G.P. 		Galactic pole North Galactic Pole
 
space astrometry      (spaceAstrometry)
space astrometry
 astrometry space geodesy ,
space observatory
 
space astronomy      (spaceAstronomy)
space astronomy
 astronomy X-ray astronomy ,
gamma-ray astronomy ,
ultraviolet astronomy 		artificial satellite ,
space observatory ,
space exploration ,
space probe
 
space biology      (spaceBiology)
space biology
 biology ,
space research 		space observatory ,
space vehicle
 
space debris      (spaceDebris)
space debris
 debris space vehicle space law ,
space pollution
 
space exploration      (spaceExploration)
space exploration
 discoveries ,
interstellar communication ,
planet ,
space astronomy ,
space observatory ,
space probe ,
space research ,
space telescope ,
space vehicle
 
  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
space geodesy      (spaceGeodesy)
space geodesy
 geodesy Earth ,
space astrometry ,
space observatory
 
space law      (spaceLaw)
space law
 space debris ,
space research
 
space motion      (spaceMotion)
space motion
 motion proper motion ,
radial velocity 		Galactic rotation ,
stellar motion ,
transverse velocity
 
space observatory      (spaceObservatory)
space observatory
 orbiting observatory observatory ,
artificial satellite 		Hubble Space Telescope ,
IRAS satellite ,
X-ray observatory ,
gamma-ray observatory 		infrared observatory ,
space astrometry ,
space astronomy ,
space biology ,
space exploration ,
space geodesy ,
space probe ,
space research ,
space telescope ,
ultraviolet astronomy ,
X-ray astronomy
FVH: merged with orbiting_observatory (2007-NOV-15)
 
space pollution      (spacePollution)
space pollution
 pollution space debris
 
space probe instrument      (spaceProbeInstrument)
space probe instrument
 space telescope balloon-borne instrument ,
ground-based astronomy ,
rocket-borne instrument ,
satellite-borne instrument ,
space probe
 
space probe      (spaceProbe)
space probe
 probe space astronomy ,
space exploration ,
space observatory ,
space probe instrument ,
space vehicle
 
space research      (spaceResearch)
space research
 space science astronomical research space biology space exploration ,
space law ,
space observatory
 
space      (space)
space
 general theory of relativity ,
special theory of relativity ,
vacuum
 
space telescope      (spaceTelescope)
space telescope
 space probe instrument ,
telescope 		X-ray telescope ,
gamma-ray telescope ,
ultraviolet telescope 		artificial satellite ,
balloon-borne instrument ,
ground-based astronomy ,
rocket-borne instrument ,
satellite-borne instrument ,
space exploration ,
space observatory
named telescope not included
 
  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
space-time curvature      (spaceTimeCurvature)
curvature of space-time
 Dark Energy ,
cosmology ,
general theory of relativity
 
space-time singularity      (spaceTimeSingularity)
space-time singularity
 singularity Schwarzschild metric ,
black hole ,
naked singularity ,
quantum cosmology
 
space vehicle      (spaceVehicle)
space vehicle
 space debris artificial satellite ,
space biology ,
space exploration ,
space probe
named vehicles not included
 
special theory of relativity      (specialTheoryOfRelativity)
special theory of relativity
 general theory of relativity space
 
speckle interferometry      (speckleInterferometry)
speckle interferometry
 interferometry angular diameter ,
angular resolution ,
angular separation ,
seeing ,
speckle
 
speckle      (speckle)
speckle
 atmospheric refraction ,
scintillation ,
seeing ,
speckle interferometry
 
spectral band      (spectralBand)
spectral band
 molecular band molecular line ,
molecular spectrum ,
telluric line
 
spectral classification      (spectralClassification)
spectral classification
 classification Henry Draper system ,
MK classification 		Henry Draper catalog ,
luminosity classification ,
spectral type
 
spectral index      (spectralIndex)
spectral index
 radio frequency ,
radio spectrum
 
spectral line      (spectralLine)
spectral line
 spectrum line D line ,
Fraunhofer line ,
absorption line ,
calcium line ,
carbon line ,
cyanogen line ,
emission line ,
hyperfine line ,
metal line ,
molecular line ,
technetium line ,
telluric line ,
ultraviolet line 		equivalent width ,
fine structure ,
instrumental profile ,
line blanketing ,
line blending ,
line broadening ,
line formation ,
line identification ,
line intensitite ,
line profile ,
line ratio ,
natural line broadening ,
natural line width ,
spectral type ,
transition probability
not a complete list of 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
spectral resolution      (spectralResolution)
spectral resolution
 resolution line blending
 
spectral type      (spectralType)
spectral type
 A star ,
B star ,
F star ,
G star ,
K star ,
L dwarf ,
M star ,
N star ,
O star ,
R star ,
S star ,
T dwarf ,
line width ,
luminosity class ,
luminosity classification ,
spectral classification ,
spectral line ,
standard star ,
temperature
not a complete list of terms
 
spectrograph slit      (spectrographSlit)
spectrograph slit
 slit long slit ,
slit mask 		long slit spectrum ,
multi-slit spectrograph ,
spectrograph ,
three-dimensional spectrum ,
two-dimensional spectrum
FVH: new (2007-SEP-21)
 
spectrograph      (spectrograph)
spectrograph
 instrument ,
optical instrument ,
telescope instrument 		Coude spectrograph ,
Fabry-Perot spectrograph ,
Fourier spectrograph ,
X-ray spectrograph ,
echelle spectrograph ,
gamma-ray spectrograph ,
grating spectrograph ,
grazing incidence spectrograph ,
integral field spectrograph ,
multi-channel spectrograph ,
multi-fiber spectrograph ,
multi-slit spectrograph ,
optical spectrograph ,
prism spectrograph ,
radio spectrograph ,
ultraviolet spectrograph 		VPH grating ,
comparison lamp ,
diffraction grating ,
echelle grating ,
flat field lamp ,
grism ,
prism ,
spectrograph slit ,
spectroheliograph ,
spectroscopy
FVH: added RT SPECTROGRAPH_SLITS, NT INTEGRAL_FIELD_SPECTROGRAPHS, MULTI_FIBER_SPECTROGRAPHS, and MULTI_SLIT_SPECTROGRAPHS (2007-SEP-21)
 
spectrography      (spectrography)
spectrography
 spectrophotography spectroscopy ,
photography
see spectroscopy
 
spectroheliograph      (spectroheliograph)
spectroheliograph
 coronagraph ,
photoheliograph ,
spectrograph
 
spectrophotometer      (spectrophotometer)
spectrophotometer
 photometer spectrophotometry ,
telescope instrument
 
spectrophotometry      (spectrophotometry)
spectrophotometry
 astronomical technique ,
observing technique 		color ,
optical scanners ,
photometry ,
spectrophotometer ,
spectroscopy ,
standard candle
 
spectroscopic analysis      (spectroscopicAnalysis)
spectroscopic analysis
 spectral analysis Doppler effect ,
Milne Eddington approximation ,
absorption line ,
collision broadening ,
continuous spectrum ,
emission line ,
maximum entropy method ,
spectrum ,
wave motion ,
waveform analysis
 
spectroscopic binary star      (spectroscopicBinaryStar)
spectroscopic binary star
 spectrum binary star binary star two-spectrum binary star Doppler effect ,
eclipsing binary star ,
ellipsoidal variable star ,
mass ,
mass function ,
velocity curve
 
  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
spectroscopy      (spectroscopy)
spectroscopy
 spectrometry astronomical technique ,
observing technique 		Fourier transform spectroscopy ,
Raman spectroscopy ,
X-ray spectroscopy ,
absorption spectroscopy ,
collision spectroscopy ,
gamma-ray spectroscopy ,
high-resolution spectrosopy ,
interference spectrosocopy ,
microwave spectroscopy ,
optical spectroscopy ,
spectrography ,
three-dimensional spectroscopy ,
time-resolved spectroscopy ,
two-dimensional spectroscopy 		collisional excitation ,
continuous spectrum ,
heterodyne ,
pressure broadening ,
radial velocity ,
reseaux ,
spectrum ,
spectrograph ,
spectrophotometry
not a complete list of terms
 
spectrum      (spectrum)
spectrum
 abnormal spectrum ,
absorption spectrum ,
atomic spectrum ,
brillouin spectrum ,
continuous spectrum ,
echelle spectrum ,
emission spectrum ,
hydrogen spectrum ,
microwave spectrum ,
molecular spectrum ,
radio spectrum ,
three-dimensional spectrum ,
two-dimensional spectrum ,
vibrational spectrum ,
visible spectrum 		Hertzsprung-Russell diagram ,
MK classification ,
absorption line ,
bremsstrahlung ,
contiuum ,
diffraction grating ,
emission line ,
energy level ,
equivalent width ,
fluorescence ,
forbidden line ,
forbidden transition ,
free-free emission ,
hyperfine line ,
prism ,
recombination line ,
resonance line ,
self-absorption ,
spectroscopic analysis ,
spectroscopy ,
stimulated emission
not a complete list of terms
 
spectrum variable star      (spectrumVariableStar)
spectrum variable star
 Am star ,
Ap star ,
intrinsic variable star 		manganese star alpha2 Canum Venaticorum star ,
magnetic star ,
oblique rotator
 
spherical aberration      (sphericalAberration)
spherical aberration
 optical aberration astigmatism ,
chromatic aberration ,
comatic aberration ,
distortion ,
field curvature
 
spherical coordinate      (sphericalCoordinate)
spherical coordinate
 angular coordinate coordinate system ,
position ,
reference system
 
SPH simulation      (SphSimulation)
SPH simulation
 SPH ,
smoothed-particle hydrodynamics 		numerical simulation
FVH: new (2007-OCT-3)
 
spicule      (spicule)
spicule
 macro spicule Sun ,
chromosphere
 
spiral arm      (spiralArm)
spiral arm
 arm Galactic structure ,
galaxy structure ,
gas distribution ,
interstellar magnetic field ,
interstellar matter ,
open star cluster ,
pitch angle ,
population I star ,
spiral galaxy
 
spiral galaxy      (spiralGalaxy)
spiral galaxy
 disk galaxy ,
galaxy 		Milky Way galaxy ,
S galaxy ,
barred spiral galaxy 		late-type galaxy ,
pitch angle ,
spiral arm
 
s-process      (sProcess)
s-process
 s process nucleosynthesis ,
p process ,
r-process ,
supernova
 
  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
S star      (SStar)
S star
 Se star giant ,
late-type star 		barium star ,
carbon star ,
heavy metal star ,
spectral type ,
technetium star ,
zirconium star
 
stability      (stability)
stability
 vibration
combine with other terms
 
standard candle      (standardCandle)
standard candle
 effective temperature ,
photometric standard star ,
photometry ,
spectrophotometry
 
standard epoch      (standardEpoch)
standard epoch
 Besselian epoch ,
Julian epoch
 
standard star      (standardStar)
standard star
 comparison star ,
photometric standard star 		position ,
spectral type
 
star association      (starAssociation)
star association
 O association ,
OB association ,
R association ,
T association 		Goulds belt ,
open star cluster ,
secular parallax
 
star atlas      (starAtlas)
star atlas
 atlas finding chart ,
map
 
starburst galaxy      (starburstGalaxy)
starburst galaxy
 galaxy star formation ,
stellar evolution
 
star cluster      (starCluster)
star cluster
 cluster of star cluster globular star cluster ,
open star cluster 		Poincare theorem ,
clustering ,
initial mass function ,
integrated magnitude ,
luminosity function ,
mass function ,
protocluster ,
relaxation time ,
tidal disruption ,
tidal radius ,
velocity dispersion ,
velocity distribution ,
virial theorem
 
star count      (starCount)
star count
 Galactic structure ,
mass function ,
star distribution ,
statistics
 
  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
star distribution      (starDistribution)
star distribution
 star count ,
survey
 
star formation      (starFormation)
star formation
 formation of star Bok globule ,
Jeans length ,
birth rate ,
cometary globule ,
cooling flow ,
dark nebula ,
extrasolar planet ,
infrared source ,
pre-main sequence star ,
protostar ,
starburst galaxy ,
stellar evolution ,
stellar ring
 
Stark broadening      (StarkBroadening)
Stark broadening
 line broadening Doppler broadening ,
Zeeman splitting ,
natural line width
 
starspot      (starspot)
starspot
 sunspot BY Draconis star ,
RS Canum Venaticorum star
 
star      (star)
star
 stellar object Sun ,
active star ,
barium star ,
binary star ,
bright star ,
central star ,
collapsed star ,
companion star ,
evolved star ,
faint star ,
field star ,
fundamental star ,
giant branch star ,
halo star ,
helium-poor star ,
helium-rich star ,
high-luminosity star ,
high-mass star ,
high-velocity star ,
hydrogen deficient star ,
hypergiant ,
intermediate population star ,
late-type star ,
lithium star ,
low-luminosity star ,
low-mass star ,
main sequence star ,
massive star ,
metal-deficient star ,
metal-poor star ,
metal-rich star ,
population I star ,
population II star ,
population III star ,
supernova ,
young star
combine star or stellar with other terms
 
statistical parallax      (statisticalParallax)
statistical parallax
 parallax
 
statistical relation      (statisticalRelation)
statistical relation
 Faber-Jackson relation ,
Hubble diagram ,
Hubble law ,
Tully-Fisher relation ,
mass-luminosity relation ,
mass-radius relation ,
period-age relation ,
period-color relation ,
period-density relation ,
period-luminosity-color relation ,
period-luminosity relation ,
period-mass relation ,
period-radius relation ,
period-spectrum relation ,
radius-luminosity relation
 
statistics      (statistics)
statistics
 Monte Carlo technique ,
distribution function ,
radio source count ,
selection effect ,
star count
combine with other terms
 
steady-state theory      (steadyStateTheory)
steady-state theory
 steady state theory cosmology Big Bang theory ,
closed universe ,
open universe
 
stellar atmosphere      (stellarAtmosphere)
stellar atmosphere
 atmosphere solar atmosphere chromosphere ,
corona ,
dredge up ,
limb brightening ,
limb darkening ,
line broadening ,
line formation ,
line width ,
negative H ion ,
scale height ,
stellar structure ,
stellar wind ,
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
stellar black hole      (stellarBlackHole)
stellar black hole
 black hole ,
collapsed star ,
stellar object 		hypernova ,
stellar evolution
 
stellar dynamics      (stellarDynamics)
stellar dynamics
 Fokker-Planck equation ,
Galactic rotation ,
N-body problem ,
Poincare theorem ,
close encounter ,
encounter ,
galaxy rotation curve ,
proper motion ,
radial velocity ,
relaxation time ,
stellar motion ,
three-body problem ,
two-body problem
 
stellar evolution      (stellarEvolution)
stellar evolution
 evolution Henyey track ,
Hertzsprung-Russell diagram ,
Kerr black hole ,
birth rate ,
carbon burning ,
chemical evolution ,
collapsed star ,
cosmology ,
e-process ,
evolutionary track ,
funneling ,
giant ,
gravitational equilibrium ,
helium burning ,
hydrogen burning ,
initial mass function ,
inner core ,
instability strip ,
luminosity function ,
mass-loss ,
protostar ,
solar interior ,
star formation ,
starburst galaxy ,
stellar black hole ,
stellar interior
FVH: moved STAR_ORIGIN to RT (2007-OCT-1)
 
stellar interior      (stellarInterior)
stellar interior
 solar interior Chandrasekhar mass ,
Chandrasekhar-Schoenberg limit ,
Eddington limit ,
Rosseland opacity ,
carbon burning ,
carbon nitrogen cycle ,
core ,
dredge up ,
gravity wave ,
helium burning ,
hydrogen burning ,
inner core ,
nuclear fusion ,
nucleosynthesis ,
oxygen burning ,
proton-proton reaction ,
stellar evolution ,
stellar structure ,
temperature zone
 
stellar motion      (stellarMotion)
stellar motion
 motion Doppler effect ,
astrometry ,
Local Standard of Rest ,
peculiar motion ,
peculiar velocity ,
proper motion ,
radial velocity ,
space motion ,
stellar dynamics
 
stellar object      (stellarObject)
star-like object, including star, brown dwarf, and evolved stellar core (NS, BH, WD)
 black dwarf ,
brown dwarf ,
neutron star ,
planetar ,
star ,
stellar black hole ,
white dwarf
FVH+ES: new (2007-OCT)
 
stellar oscillation      (stellarOscillation)
stellar oscillation
 solar oscillation asteroseismology ,
seismology
 
stellar population      (stellarPopulation)
stellar population
 disk population ,
halo star ,
intermediate population star ,
population I star ,
population II star ,
population III star
 
stellar ring      (stellarRing)
stellar ring
 ring star formation
 
stellar      (stellar)
stellar
see sn for 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
stellar structure      (stellarStructure)
stellar structure
 hydrostatic equilibrium ,
macroturbulence ,
model ,
polytrope ,
solar interior ,
stellar atmosphere ,
stellar interior
 
stellar wind      (stellarWind)
stellar wind
 mass-loss ,
plasma 		solar wind Poynting-Robertson effect ,
accretion disk ,
chromosphere ,
circumstellar shell ,
interstellar wind ,
radiation pressure ,
shock ,
stellar atmosphere
 
stimulated emission      (stimulatedEmission)
stimulated emission
 laser ,
maser ,
population inversion ,
spectrum ,
stimulated radiation
 
stimulated radiation      (stimulatedRadiation)
stimulated radiation
 stimulated emission
 
stokes parameter      (stokesParameter)
Stokes parameter
 light polarization ,
polarized radiation
 
stratopause      (stratopause)
stratopause
 Earth atmosphere ,
mesosphere ,
stratosphere
 
stratosphere      (stratosphere)
stratosphere
 Earth atmosphere ,
stratopause ,
tropopause
 
streak photography      (streakPhotography)
streak photography
 photography
 
streamer      (streamer)
streamer
 comet ,
tail
 
stroboscope      (stroboscope)
stroboscope
 instrument
 
  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
Stromgren photometry      (StromgrenPhotometry)
Stromgren photometry
 Stromgren uvby system ,
four-color photometry ,
uvby system 		medium band photometry ,
photometric system 		H beta photometry ,
Kapteyn selected area ,
e region ,
f region
 
Stromgren sphere      (StromgrenSphere)
Stromgren sphere
 gaseous sphere interstellar matter ,
ionization ,
ionized gas
 
strong gravitational lensing      (strongGravitationalLensing)
strong gravitational lensing (resolved)
 gravitational lensing
FVH: new (2007-OCT-8)
 
strong interaction      (strongInteraction)
strong interaction
 interaction nuclear physics ,
weak interaction
between atomic particle
 
strontium star      (strontiumStar)
strontium star
 magnetic star ,
strontium
 
strontium      (strontium)
strontium (atomic number 38)
 Sr fundamental chemical element strontium star
FVH: new (2007-OCT-25)
 
structure      (structure)
structure
 galaxy structure planet
combine with other terms
 
subdwarf      (subdwarf)
subdwarf star
 subluminous star A subdwarf ,
B subdwarf ,
F subdwarf ,
G subdwarf ,
K subdwarf ,
L subdwarf ,
M subdwarf ,
O subdwarf ,
T subdwarf ,
late-type subdwarf 		Harman-Seaton sequence ,
dwarf
 
subgiant      (subgiant)
subgiant star
 post-main sequence star A subgiant ,
F subgiant ,
G subgiant ,
K subgiant ,
M subgiant 		luminosity classification
 
subluminous star      (subluminousStar)
subluminous star
 degenerate star ,
subdwarf 		population II 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
submillimeter astronomy      (submillimeterAstronomy)
submillimeter astronomy
 radio astronomy millimeter astronomy ,
radio observatory ,
submillimeter radiation
 
submillimeter radiation      (submillimeterRadiation)
submillimeter radiation
 submillimeter wave electromagnetic radiation submillimeter astronomy
FVH: moved submillimeter_wave to here, cleaned up (2007-OCT-8)
 
subreflector      (subreflector)
subreflector
 Cassegrain antenna ,
Cassegrain focus ,
radio telescope ,
secondary mirror ,
tertiary mirror
 
sulfur      (sulfur)
sulfur (atomic number 16)
 S ,
sulphur 		fundamental chemical element
FVH: new (2007-OCT-25)
 
summer solstice      (summerSolstice)
summer solstice
 solstice Tropic of Cancer ,
winter solstice
 
Sun      (Sun)
Sun
 star active Sun Fraunhofer line ,
Hanle effect ,
Solar System ,
active prominence ,
active region ,
bailys bead ,
bright point ,
chromosphere ,
diamond ring effect ,
flare ,
granulation ,
granule ,
Local Standard of Rest ,
lunar eclipse ,
macro spicule ,
mottle ,
photosphere ,
prominence ,
quiescent prominence ,
solar constant ,
solar corona ,
solar eclipse ,
solar filament ,
solar physics ,
solar-planetary relation ,
solar surface ,
solar-terrestrial relation ,
spicule
combine Sun or solar with other terms; not a complete list of terms
 
sunlight      (sunlight)
sunlight
 sky brightness ,
solar constant ,
twilight
 
sunspot cycle      (sunspotCycle)
sunspot cycle
 Maunder minimum ,
butterfly diagram ,
solar activity ,
solar cycle ,
sunspot
 
sunspot group      (sunspotGroup)
sunspot group
 bipolar group solar activity ,
sunspot number
 
sunspot number      (sunspotNumber)
sunspot number
 Wolf number ,
relative sunspot number 		Maunder minimum ,
butterfly diagram ,
solar activity ,
solar cycle ,
sunspot 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
sunspot      (sunspot)
sunspot
 sun spot starspot Evershed-effect ,
Wilson effect ,
active Sun ,
bipolar group ,
butterfly diagram ,
emerging flux ,
magnetic field ,
magnetic storm ,
penumbra ,
plage ,
prominence ,
solar activity ,
solar filament ,
sunspot cycle ,
umbra
FVH: added ALT sun_spot, BT starspot (2007-OCT-8)
 
Sunyaev-Zeldovich effect      (SunyaevZeldovichEffect)
Sunyaev-Zeldovich effect
 Sunyaev Zeldovich effect X-ray emission ,
background radiation ,
galaxy cluster ,
intracluster matter ,
microwave background
 
supercluster      (supercluster)
supercluster
 galaxy cluster
 
superconducting tunnel junction      (superconductingTunnelJunction)
super-conducting tunnel junction detector
 detector quantum mechanics
FVH: new (2007-SEP-21)
 
supergalactic coordinate system      (supergalacticCoordinateSystem)
supergalactic coordinate system
 celestial coordinate system galaxy cluster ,
supergalactic latitude ,
supergalactic longitude
ES: new (2007-OCT-8)
 
supergalactic latitude      (supergalacticLatitude)
supergalactic latitude
 latitude supergalactic coordinate system ,
supergalactic longitude
ES: (2007-OCT-8)
 
supergalactic longitude      (supergalacticLongitude)
supergalactic longitude
 longitude supergalactic coordinate system ,
supergalactic latitude
ES: (2007-OCT-8)
 
supergiant      (supergiant)
supergiant star
 high-luminosity star ,
post-main sequence star 		A supergiant ,
B supergiant ,
F supergiant ,
G supergiant ,
K supergiant ,
O supergiant ,
early-type supergiant ,
late-type supergiant 		Hubble Sandage variable star ,
Lc variable star ,
R Coronae Borealis star ,
hypergiant ,
irregular variable star ,
semi-regular variable star ,
supermassive star
 
supergranulation      (supergranulation)
supergranulation
 granulation solar surface
 
superhump      (superhump)
superhump
 variability SU Ursae Majoris star ,
accretion disk ,
precession
 
  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
supermassive star      (supermassiveStar)
supermassive star
 massive star ,
supergiant
 
supernova envelope      (supernovaEnvelope)
supernova envelope
 shock wave ,
supernova
 
supernova remnant      (supernovaRemnant)
supernova remnant
 SNR X-ray source ,
black hole ,
neutron star ,
pulsar ,
radio source ,
white dwarf ,
white hole
 
supernova      (supernova)
supernova
 SN high-luminosity star ,
star 		Type Ia supernova ,
Type Ib supernova ,
Type Ic supernova ,
Type II supernova ,
hypernova 		Opik theory ,
cataclysmic variable star ,
e-process ,
frozen in element ,
gravitational collapse ,
mass-loss ,
neutrino ,
nova ,
nuclear fusion ,
nucleosynthesis ,
optical outburst ,
p process ,
pre-supernova ,
progenitor ,
pulsar ,
r-process ,
runaway star ,
s-process ,
shock ,
supernova envelope ,
support system
FVH: moved presupernovas from UF to RT (2007-SEP-21)
 
support system      (supportSystem)
support system
 instrument ,
supernova ,
telescope
combine with other terms
 
surface brightness      (surfaceBrightness)
surface brightness
 brightness L galaxy ,
gravity darkening ,
photosphere ,
surface photometry ,
temperature ,
von Zeipel theorem
 
surface gravity      (surfaceGravity)
surface gravity
 acceleration of gravity diameter ,
gravitational force ,
gravity darkening ,
line width ,
luminosity ,
luminosity classification ,
mass
 
surface of celestial body      (surfaceOfCelestialBody)
surface [celestial body]
 surface celestial body canyon Moon ,
dust storm ,
geology ,
lunar dome ,
maria ,
petrology ,
photosphere ,
planet ,
satellite ,
topography ,
volatile ,
volcano ,
water ice
 
surface photometry      (surfacePhotometry)
surface photometry
 area photometry photometry drift scan ,
galaxy ,
isophotal diameter ,
isophot ,
nebula ,
surface brightness
 
surface property      (surfaceProperty)
surface property
 property albedo
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
survey      (survey)
survey
 X-ray survey ,
sky survey ,
ultraviolet survey 		atlas ,
catalog ,
radio source count ,
star distribution
 
SU Ursae Majoris star      (SuUrsaeMajorisStar)
SU Ursae Majoris star
 dwarf nova WZ Sagittae star ,
superhump
 
S Vulpeculae star      (SVulpeculaeStar)
S Vulpeculae star
 long period variable star ,
pulsating variable star ,
semi-regular variable star 		Mira variable star ,
RV Tauri star
 
Swan band      (SwanBand)
Swan band
 molecular band carbon monoxide ,
molecular spectrum
 
SX Arietis star      (SxArietisStar)
SX Arietis star
 helium variable star cataclysmic variable star ,
dwarf nova ,
early-type variable star ,
eruptive binary star ,
magnetic variable star 		alpha2 Canum Venaticorum star
FVH: deleted wrong referernces to CV's (2007-OCT-2)
 
SX Phoenicis star      (SxPhoenicisStar)
SX Phoenicis star
 multi-periodic variable star ,
population II star ,
pulsating variable star
 
symbiotic nova      (symbioticNova)
symbiotic nova
 nova ,
symbiotic star
 
symbiotic star      (symbioticStar)
symbiotic star
 emission line star ,
eruptive binary star 		Z Andromedae star ,
symbiotic nova 		P Cygni line profile ,
X-ray binary star ,
cataclysmic variable star ,
dust shell
 
symbol      (symbol)
symbol
 unit
 
synchronous detector      (synchronousDetector)
synchronous detector
 detector
 
  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
synchronous rotation      (synchronousRotation)
synchronous rotation
 rotation close binary star ,
orbit ,
rotating star
 
synchrotron radiation      (synchrotronRadiation)
synchrotron radiation
 electromagnetic radiation ,
radiation 		cyclotron radiation ,
gyrosynchrotron radiation 		Razin effect ,
bremsstrahlung ,
magnetohydrodynamics ,
non-thermal source ,
radiation mechanism ,
relativistic electron
 
synodic period      (synodicPeriod)
synodic period
 Solar System ,
conjunction ,
opposition ,
planet ,
syzygy
 
system      (system)
system
 absorption line system
combine with other terms
 
syzygy      (syzygy)
syzygy
 conjunction ,
opposition ,
planet ,
synodic period
conjunction or opposition of planet
 
Mon Jun 2 18:20:55 2008