TABLE  Spectrum

Details of individual spectra.

The Spectrum table lists details of individual spectra observed during
the survey. Note that a given target star may (and often will) be
observed more than once during the survey, so a given targetID may have
several entries in the table; furthermore, early data releases may well
contain several pipeline processed versions of the same data for a given
target.


Required constraints:
  • Primary key is (specID)
  • (targetID) references Target(targetID)
  • (specFrameID) references SpecFrame(specFrameID)

NameTypeLengthUnitDescriptionDefault ValueUnified Content Descriptor
specIDbigint8 Spectrum identifier: unique identifier for each spectrum (4 MSB are the specFrameID; 4 LSB are the nSpec)-99999999 
specFrameIDint4 SpecFrame identifier of the SpecFrame from which the spectrum was extracted-99999999 
targetIDbigint8 Target identifer of the star being observed-99999999 
fileNamevarchar256 The GES Science Archive filename at WFAU for the specFrame, eg. /path/filename.fits. Only for UVES SingleSpec files.'NONE'meta.id;meta.file
nSpecint4 The number of the spectrum {catalogue TType keyword: velclass.Nspec+Fibinfo.Nspec,NoName4.NSPEC,NoName3.NSPEC}-99999999 
nSpecOldint4 The number of the spectrum before unused fibres were culled (equivalent to the number of the fibre) {catalogue TType keyword: velclass.Nspec_old+Fibinfo.Nspec_old,NoName3.NSPEC_OLD}-99999999 
cNamevarchar16 Object name formed from the coordinates of the object (can be used in place of object to give a unique name) {catalogue TType keyword: Fibinfo.Cname}'NONE' 
typevarchar32 M for programme objects or S for sky fibres {catalogue TType keyword: Fibinfo.TYPE,NoName4.TYPE,NoName3.TYPE}'NONE' 
spClassvarchar8 The spectral class (STAR, SKY or LOWSN; the latter two classes do not have spectral fits done for them) {catalogue TType keyword: Fibinfo.OBJ_CLASS,velclass.SPCLASS}'NONE' 
magreal4magA magnitude estimate {catalogue TType keyword: Fibinfo.MAGNITUDE,NoName4.MAGNITUDE}-9.999995e+08 
priorityint4 Observation priority {catalogue TType keyword: Fibinfo.GES_RANK,Fibinfo.PRIORITY,NoName4.PRIORITY}-99999999 
snrreal4 The mean signal-to-noise ratio in the spectrum {catalogue TType keyword: Fibinfo.S_N,velclass.S_N}-9.999995e+08 
skyOffreal4pixelsOffset to get the mean sky into coincidence with the current spectrum {catalogue TType keyword: Fibinfo.sky_off}-9.999995e+08 
skyScalereal4 The scaling factor applied to the mean sky before subtracting from the current spectrum {catalogue TType keyword: Fibinfo.sky_scale,NoName4.SKY_SCALE}-9.999995e+08 
expTimereal4secondsTotal integration time {catalogue TType keyword: Fibinfo.exptime}-9.999995e+08 
rmsTracereal4pixelsThe RMS of the fit to the curvature of the spectrum on the detector {catalogue TType keyword: Fibinfo.RMS_trace}-9.999995e+08 
rmsArcreal4AngstromsThe RMS of the wavelength solution {catalogue TType keyword: Fibinfo.RMS_arc,NoName4.RMS_ARC}-9.999995e+08 
resArcreal4 The resolution of the arclines {catalogue TType keyword: Fibinfo.RES_arc}-9.999995e+08 
fwhmArcreal4 The FWHM of the arclines {catalogue TType keyword: Fibinfo.FWHM_arc}-9.999995e+08 
ccfMaxreal4 The peak value of the cross correlation function {catalogue TType keyword: Fibinfo.CCFmax,NoName4.CCFMAX}-9.999995e+08 
ccfWidthreal4km/sWidth of the peak of the cross correlation function {catalogue TType keyword: Fibinfo.ccfwidth}-9.999995e+08 
rvRedshiftreal4km/sThe radial velocity measured from the cross correlation {catalogue TType keyword: Fibinfo.rv_redshift}-9.999995e+08 
rvfloat8km/sThe measured radial velocity from the cross correlation {catalogue TType keyword: Fibinfo.RV,velclass.VEL}-9.999995e+08 
rvErrfloat8km/sError on the measured radial velocity from the cross correlation {catalogue TType keyword: Fibinfo.RV_ERR,velclass.EVEL}-9.999995e+08 
rvVarfloat8km/sVariance? on the measured radial velocity from the cross correlation {catalogue TType keyword: Fibinfo.RV_VAR}-9.999995e+08 
vRotfloat8km/sThe best fit rotational velocity {catalogue TType keyword: Fibinfo.VROT,velclass.VROT}-9.999995e+08 
vRotErrfloat8km/sError on vRot {catalogue TType keyword: Fibinfo.VROT_ERR,NoName1.evrot}-9.999995e+08 
helioCorreal4km/sThe heliocentric correction {catalogue TType keyword: Fibinfo.Helio_cor,Fibinfo.HELIOCOR,NoName4.HELIO_COR}-9.999995e+08 
simcalCorreal4km/sThe correction to be applied to correct for wavelength drift calculated from simcal observations {catalogue TType keyword: Fibinfo.Simcal_cor,NoName4.SIMCAL_COR}-9.999995e+08 
simcalRmsreal4km/sThe RMS on simcalCor {catalogue TType keyword: Fibinfo.Simcal_rms,NoName4.SIMCAL_RMS}-9.999995e+08 
skylineCorreal4km/sThe correction to be applied to correct for wavelength drift calculated from the sky lines in the observations {catalogue TType keyword: Fibinfo.Skyline_cor,NoName4.SKYLINE_COR}-9.999995e+08 
skylineRmsreal4km/sThe RMS on skylineCor {catalogue TType keyword: Fibinfo.Skyline_rms,NoName4.SKYLINE_RMS}-9.999995e+08 
vacuumCorreal4km/sThe correction to be applied to the measured redshift if the spectral features in the template are defined in vacuum rather than at STP {catalogue TType keyword: Fibinfo.Vacuum_cor,NoName4.VACUUM_COR}-9.999995e+08 
bestTemplvarchar64 A designation for the best fitting radial velocity template {catalogue TType keyword: Fibinfo.Best_tmpl,NoName4.BEST_TMPL}'NONE' 
tmplTempreal4KThe temperature for the best fitting radial velocity template {catalogue TType keyword: Fibinfo.Tmpl_temp,NoName4.TMPL_TEMP}-9.999995e+08 
tmplLoggreal4 The value of log(g) for the best fitting radial velocity template {catalogue TType keyword: Fibinfo.Tmpl_logg,NoName4.TMPL_LOGG}-9.999995e+08 
tmplFeHreal4 The value of [Fe/H] for the best fitting radial velocity template {catalogue TType keyword: Fibinfo.Tmpl_feh,NoName4.TEMPL_FEH}-9.999995e+08 
chi2dofreal4 Chi-squared of the template fit {catalogue TType keyword: velclass.CHI2_DOF}-9.999995e+08 
chi2contreal4 Chi-squared of the continuum-only fit {catalogue TType keyword: velclass.CHI2_CONT}-9.999995e+08 
templDistreal4 Something to do with the radial velocity template {catalogue TType keyword: velclass.TEMPL_DISTANCE}-9.999995e+08 
loggreal4 The value of log(g) of the best fitting template {catalogue TType keyword: velclass.LOGG}-9.999995e+08 
logTeffreal4 The value of log(Teff) of the best fitting template {catalogue TType keyword: velclass.LOGTEFF}-9.999995e+08 
FeHreal4 The value of [Fe/H] of the best fitting template {catalogue TType keyword: velclass.FEH}-9.999995e+08 
deprecated link to glossaryint4 Deprecated flag: coded as current=0 or deprecated !=00meta.code
Total length560