J/ApJ/543/1016ivo://CDS.VizieR/J/ApJ/543/1016doi:10.26093/cds/vizier.15431016CDSBrosius J.W.Thomas R.J.Davila J.M.Landi E.2004-07-04T21:20:35Z2004-07-04T21:20:29ZCDS support team

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

cds-question@unistra.frthe-sunspectroscopyultraviolet-astronomyGoddard Space Flight Center's Solar EUV Research Telescope and Spectrograph was flown on 1997 November 18, carrying an intensified CCD detector and a multilayer-coated toroidal diffraction grating with enhanced sensitivity over that of a standard gold-coated grating throughout the instrument's 299-353{AA} spectral bandpass. Spectra and spectroheliograms of NOAA Active Region 8108 (N21{deg}, E18{deg}) were obtained with a spectral resolution (instrumental FWHM) of 115m{AA}. Nearly 100 emission lines were observed in the spatially averaged active region spectrum. Spectra and spectroheliograms of quiet areas south of the region were also obtained. An end-to-end radiometric calibration of the rocket instrument was carried out at the Rutherford-Appleton Laboratory in the same facility that was used to calibrate the Coronal Diagnostic Spectrometer experiment on SOHO and using the same EUV light source. The accuracy of this calibration is confirmed by the excellent agreement between the measured and theoretical values of density- and temperature-insensitive line intensity ratios. Nine emission lines of Fe XV are identified in our spectrum; however, large differences between wavelengths in the CHIANTI database and some of the measured solar wavelengths, as well as inconsistencies of various theoretical intensity ratios, suggest a need for improvement in the Fe XV atomic physics parameters and/or the presence of unidentified blending lines.2000ApJ...543.1016Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/543/1016CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/113/237 : Ultraviolet Spectrum of the Sun (Samain, 1995)J/A+AS/129/41 : Fe I line shifts in the Sun (Allende Prieto+ 1998)J/A+A/304/563 : Cool X-ray flares of Sun with GOES (Phillips+, 1995)J/ApJS/120/409 : The SMM Atlas of Gamma-Ray flares (Vestrand+, 1999)J/A+AS/103/57 : Ion-atom collisions in Sun atmosphere (Mihajlov+ 1994)J/A+AS/131/431 : Accurate wavelengths in Sun spectrum (Allende Prieto+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/543/1016https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/543/1016http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/543/1016https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/543/1016https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/543/1016http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/543/1016GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVOpticaldefaultJ/ApJ/543/1016/table1SERTS-97 absolutely calibrated active region line listrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaWavelength0.1nmem.wlfloatIntIntensitymW.m**-2.sr**-1spect.line.intensityfloate_Intrms uncertainty on IntmW.m**-2.sr**-1stat.errorfloatFWHMMeasured width, including instrumental, thermal, and nonthermal contributions0.1pmspect.line.widthfloate_FWHMrms uncertainty on FWHM0.1pmstat.errorfloatIonIonphys.atmol.ionizationcharFlare? Flare fractional portion of lambda (Dere, 1978ApJ...221.1062D)0.1nmmeta.notefloatnullableActive? Active fractional portion of lambda (Thomas & Neupert 1994, Cat. <J/ApJS/91/461>)0.1nmmeta.notefloatnullableFull? Full fractional portion of lambda (Behring et al., 1976ApJ...203..521B)0.1nmspect.line.widthfloatnullableQuiet? Quiet fractional portion of lambda (Brooks et al. 1999A&A...347..277B, in which the shortest wavelength is 308.515{AA})0.1nmmeta.notefloatnullableNoteNotes detailed in notes1.dat filemeta.notecharJ/ApJ/543/1016/notes1Notes to table1TextText of the notemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteNote numbermeta.noteintJ/ApJ/543/1016/table2Confirmation of the SERTS-97 calibration with density- and temperature-insensitive line intensity ratios (insensitive ratios)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon line ratiophys.atmol.ionizationcharlambda1First wavelength0.1nmem.wlfloatlambda2Second wavelength0.1nmem.wlfloatRatioTTheoretical line ratiospect.line.intensity;arith.ratiofloate_RatioT? rms uncertainty on RatioTstat.errorfloatnullableRatioMMeasured line ratiospect.line.intensity;arith.ratiofloate_RatioM? rms uncertainty on RatioMstat.errorfloatnullableJ/ApJ/543/1016/table3Emission lines used to derive active region differential emission measure (DEM)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonphys.atmol.ionizationcharlambdaWavelength0.1nmem.wlfloatTeffEffective temperature (1)Kphys.temperature.effectivefloatlobs/ldemRatio of the observed intensity to the theoretical intensity derived from the differential emission measure (DEM)spect.line.intensity;arith.ratiofloate_lobs/ldemrms uncertainty on lobs/ldemstat.errorfloat