J/AJ/157/229ivo://CDS.VizieR/J/AJ/157/229doi:10.26093/cds/vizier.51570229CDSBohlin R.C.Deustua S.E.2019-08-21T11:56:04Z2019-08-19T14:55:30ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frinfrared-sourceswhite-dwarf-starsspectrophotometryinfrared-astronomyspectroscopyThe collections of spectral energy distributions (SEDs) in the Hubble Space Telescope (HST) CALSPEC database are augmented by 19 infrared (IR) SEDs from Wide Field Camera 3 (WFC3) IR grism spectra. Together, the two IR grisms, G102 and G141, cover the 0.8-1.7 {mu}m range with resolutions of R=200 and 150, respectively. These new WFC3 SEDs overlap existing CALSPEC Space Telescope Imaging Spectrograph (STIS) standard star flux distributions at 0.8-1 {mu}m with agreement to ~<1%. Some CALSPEC standards already have near-IR camera and multi-object spectrogragh (NICMOS) SEDs; but in their overlap region at 0.8-1.7 {mu}m, the WFC3 data have better wavelength accuracy, better spectral resolution, better repeatability, and, consequently, better flux distributions of ~1% accuracy in our CALSPEC absolute flux SEDs versus ~2% for NICMOS. With the improved SEDs in the WFC3 range, the modeled extrapolations to 32 {mu}m for the James Webb Space Telescope flux standards begin to lose precision longward of the 1.7 {mu}m WFC3 limit, instead of at the 1.0-{mu}m-long wavelength limit for STIS. For example, the extrapolated IR flux longward of 1.7 {mu}m for 1808347 increases by ~1% for the model fit to the data with WFC3, instead of just to the STIS SED alone.2019AJ....157..229Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/157/229CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/155/162 : Comparison of IUE and CALSPEC SEDs for 6 WDs (Bohlin+, 2018)http://www.stsci.edu/hst/observatory/crds/calspec.html : CALSPEC databasehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/157/229https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/157/229http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/157/229https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/157/229https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/157/229http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/157/229GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/157/229/table1 (WFC3 IR observations of CALSPEC stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/157/229/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/157/229/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/157/229/table1?GETtext/xml+votable180.050000true269.305138967.06132610.0055555555555555566/1890 9322 9506 10157 10202 11605 11607 11984 15338 16058 19857 20404 21296 23789 24472 25792 28026 30833 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/157/229?format=asciiInfrareddefaultJ/AJ/157/229/table1WFC3 IR observations of CALSPEC starsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.id;meta.mainIDCALSPEC identifiermeta.idcharJmag[7.95/15.4]? J band magnitude from Simbadmagphot.mag;em.IR.JfloatnullableSpTypeSpectral type from Simbadsrc.spTypecharG102[0/77] Number of available WFC3 G102 observations that are included in our average SEDsmeta.numberintG141[0/233] Number of available WFC3 G141 observation that are included in our average SEDsmeta.numberintNICMOS[Yes/No] NICMOS observations are also available?meta.codecharspspectrummeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/AJ/157/229/table2WFC3 IR grism flux calibration sensitivities SrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintW-G102[7608/11800]? The G102 grism wavelength ({AA})0.1nmem.wlintnullableS-G102[999999.0/2.303e+17]? The G102 grism sensitivity at W-G102 (1)instr.sensitivitydoublenullableW-G141[10000/17500] The G141 grism wavelength ({AA})0.1nmem.wlintS-G141[8.59e+14/6.604e+17] The G141 grism sensitivity at W-G141 (1)instr.sensitivitydoubleJ/AJ/157/229/table3WFC3 IR SEDs for 19 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDCALSPEC identifiermeta.id;meta.maincharWave[7608/17200] Wavelength ({AA})0.1nmem.wlfloatNet[-0.14892/72264] Net electrons per second at Wavect/sphot.countdoubleFlux[-6.8284e-17/7.4841e-13] Flux at Wave (in erg/s/cm^2^/{AA})cW.m**-2.nm**-1phot.fluxdoubleStat-err[1.5506e-19/0.055355] Statistical uncertainty in FluxcW.m**-2.nm**-1stat.errordoubleSys-err[0/7.4841e-15] The 1% systematic uncertainty in FluxcW.m**-2.nm**-1stat.errordoubleNobs[0/233] Number of observationsmeta.numberintExp[2.9/13084.9] Exposure timestime.duration;obs.exposurefloatQual[0/1] Quality code (1=Good, 0=Bad)meta.code.qualint