gdr3spec.ssametaivo://org.gavo.dc/gaia/s3/ssametadoi:10.21938/W:hWbPah3wBabuqewQULTAThe GAVO DC teamDemleitner, M.Andrae, R.2022-11-07T08:46:33ZGAVO Data Centre Team

Mönchhofstrasse 12-14, D-69120 Heidelberg

gavo@ari.uni-heidelberg.de+49 6221 54 1837starssurveysspectroscopySSA Metadata for the Monte Carlo-sampled Gaia DR3 XP spectra2022arXiv220800211Ghttps://dc.g-vo.org/tableinfo/gdr3spec.ssametaGaiaGaia BP/BP Spectrometer0/0-1156863 579011.986e-19 4.966e-19Opticalgdr3spec This is a re-publication the Gaia DR3 RP/BP spectra in the IVOA Spectral Data Model. It presents the continous spectra in sampled form, using a Monte Carlo scheme to decorrelate errors, elaborated in this resource's reference URL. The underlying tables are also available for querying through TAP, which opens some powerful methods for mass-analysing the data.gdr3spec.ssametaSSA Metadata for the Monte Carlo-sampled Gaia DR3 XP spectra219196404phot_g_mean_magMean magnitude in the G band. This is computed from the G-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_g_mean_flux_over_error.magphot.mag;em.opt;stat.mean1.7732815.506819.722921.033322.75070.996994floatnullablephot_bp_mean_magMean magnitude in the integrated BP band. This is computed from the BP-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_bp_mean_flux_over_error.magphot.mag;em.opt.B2.39815.891120.294321.856525.31610.851071floatnullablephot_rp_mean_magMean magnitude in the integrated RP band. This is computed from the RP-band mean flux applying the magnitude zero-point in the Vega scale. To obtain error estimates, see phot_rp_mean_flux_over_error.magphot.mag;em.opt.R1.9687414.540418.604320.259924.64070.85822floatnullablesource_idGaia DR3 unique source identifier. Note that this *cannot* be matched against the DR1 or DR2 source_ids.meta.id;meta.main15118286476804.59792466834312e+174.280400489214347e+186.707472532802898e+1869175289932832044801.0longnullableraBarycentric Right Ascension in ICRS at epoch J2016.0degpos.eq.ra;meta.main1.63271e-0644.3559260.257327.9323601doublenullabledecBarycentric Declination in ICRS at epoch J2016.0degpos.eq.dec;meta.main-89.8559-69.306-25.65858.828789.80891doublenullablepreviewURL of a preview for the datasetmeta.ref.url;meta.previewcharnullableaccrefAccess key for the datameta.ref.url;meta.datasetssa:Access.ReferencecharnullableownerOwner of the datacharnullableembargoDate the data will become/became publicyrcharnullablemimeMIME type of the file servedmeta.code.mimessa:Access.Formatapplication/x-votable+xmlcharnullableaccsizeSize of the data in bytesbytessa:Access.Sizelongnullablessa_dstitleA compact and descriptive designation of the dataset.meta.title;meta.datasetssa:DataID.Titlecharssa_creatordidDataset identifier assigned by the creatormeta.idssa:DataID.CreatorDIDcharnullablessa_pubdidDataset identifier assigned by the publishermeta.ref.ivoidssa:Curation.PublisherDIDcharindexednullablessa_cdateProcessing/Creation datetime;meta.datasetssa:DataID.Datecharnullablessa_pdateDate last published.ssa:Curation.Datecharnullablessa_bandpassBandpass (i.e., rough spectral location) of this dataset; this should be the most appropriate term from the vocabulary http://www.ivoa.net/rdf/messenger.instr.bandpassssa:DataID.BandpassOpticalcharnullablessa_cversionCreator assigned version for this dataset (will be incremented when this particular item is changed).meta.version;meta.datasetssa:DataID.VersionDR 6charnullablessa_targnameCommon name of object observed.meta.id;srcssa:Target.Namecharssa_targclassObject class (star, QSO,...; use Simbad object classification http://simbad.u-strasbg.fr/simbad/sim-display?data=otypes if at all possible)src.classssa:Target.Classstarcharnullablessa_redshiftRedshift of target objectsrc.redshiftssa:Target.Redshiftfloatnullablessa_targetposEquatorial (ICRS) position of the target object.pos.eq;srcssa:Target.pos.spointdoublenullablessa_snrSignal-to-noise ratio estimated for this datasetstat.snrssa:Derived.SNRfloatnullablessa_locationICRS location of aperture centerdegpos.eqssa:Char.SpatialAxis.Coverage.Location.Valuedoublenullablessa_apertureAngular diameter of aperturedegphys.angSize;instr.fovssa:Char.SpatialAxis.Coverage.Bounds.Extentfloatnullablessa_dateobsMidpoint of exposure (MJD)dtime.epochssa:Char.TimeAxis.Coverage.Location.Valuedoublenullablessa_timeextExposure durationstime.durationssa:Char.TimeAxis.Coverage.Bounds.Extentfloatnullablessa_specmidMidpoint of region covered in this datasetminstr.bandpassssa:Char.SpectralAxis.Coverage.Location.Valuefloatnullablessa_specextWidth of the spectrumminstr.bandwidthssa:Char.SpectralAxis.Coverage.Bounds.Extentfloatnullablessa_specstartLower value of spectral coordinatemem.wl;stat.minssa:Char.SpectralAxis.Coverage.Bounds.Startfloatnullablessa_specendUpper value of spectral coordinatemem.wl;stat.maxssa:Char.SpectralAxis.Coverage.Bounds.Stopfloatnullablessa_lengthNumber of points in the spectrumssa:Dataset.Lengthintnullablessa_modelData model name and versionssa:Dataset.DataModelSpectrum-1.0charssa_csysnameSystem RA and Dec are given inssa:CoordSys.SpaceFrame.NameICRScharssa_timesiTime conversion factor in Osuna-Salgado convention.ssa:Dataset.TimeSIcharnullablessa_spectralsiSpectral conversion factor in Osuna-Salgado conventionssa:Dataset.SpectralSIcharnullablessa_spectralucdUCD of the spectral column in the spectra served; when you have wavelengths, use em.wl for vacuum wavelengths, em.wl;obs.atmos for air wavelengths.meta.ucdssa:Char.SpectralAxis.Ucdem.wlcharssa_spectralunitUnit of the spectral columnmeta.unitssa:Char.SpectralAxis.Unitnmcharssa_fluxsiFlux/magnitude conversion factor in Osuna-Salgado conventionssa:Dataset.FluxSIcharnullablessa_fluxucdUCD of the flux columnmeta.ucdssa:Char.FluxAxis.Ucdphot.flux.density;em.wlcharssa_fluxunitUnit of the flux columnmeta.unitssa:Char.FluxAxis.UnitW.m**-2.nm**-1charssa_dstypeType of data (spectrum, time series, etc)ssa:Dataset.Typespectrumcharnullablessa_publisherPublisher of the datasets included here.meta.curationssa:Curation.Publishercharssa_creatorCreator of the datasets included here.ssa:DataID.CreatorunicodeCharnullablessa_collectionA short handle naming the collection this spectrum belongs to.ssa:DataID.CollectionGaia DR3 XPcharnullablessa_instrumentInstrument or code used to produce these datasetsmeta.id;instrssa:DataID.InstrumentVIMOScharnullablessa_datasourceMethod of generation for the data (one of survey, pointed, theory, custom, artificial).ssa:DataID.DataSourcesurveycharnullablessa_creationtypeProcess used to produce the data (archival, cutout, filtered, mosaic, projection, spectralExtraction, or catalogExtraction)ssa:DataID.CreationTypearchivalcharnullablessa_referenceURL or bibcode of a publication describing this data.meta.bib.bibcodessa:Curation.Referencecharnullablessa_fluxstaterrorStatistical error in fluxstat.error;phot.flux.density;emssa:Char.FluxAxis.Accuracy.StatErrorfloatnullablessa_fluxsyserrorSystematic error in fluxstat.error.sys;phot.flux.density;emssa:Char.FluxAxis.Accuracy.SysErrorfloatnullablessa_fluxcalibType of flux calibration (ABSOLUTE, CALIBRATED, RELATIVE, NORMALIZED, or UNCALIBRATED).ssa:Char.FluxAxis.CalibrationABSOLUTEcharnullablessa_binsizeBin size in wavelengthmem.wl;spect.binSizessa:Char.SpectralAxis.Accuracy.BinSizefloatnullablessa_spectstaterrorStatistical error in wavelengthmstat.error;emssa:Char.SpectralAxis.Accuracy.StatErrorfloatnullablessa_spectsyserrorSystematic error in wavelengthmstat.error.sys;emssa:Char.SpectralAxis.Accuracy.SysErrorfloatnullablessa_speccalibType of wavelength calibrationmeta.code.qualssa:Char.SpectralAxis.CalibrationABSOLUTEcharnullablessa_specresResolution (in meters of wavelength) on the spectral axismspect.resolution;em.wlssa:Char.SpectralAxis.Resolutionfloatnullablessa_spaceerrorStatistical error in positiondegstat.error;pos.eqssa:Char.SpatialAxis.Accuracy.StatErrorfloatnullablessa_spacecalibType of calibration in spatial coordinatesmeta.code.qualssa:Char.SpatialAxis.Calibrationcharnullablessa_spaceresSpatial resolution of datadegpos.angResolutionssa:Char.SpatialAxis.Resolutionfloatnullablessa_regionRough coverage based on location and aperturedoublenullable