J/MNRAS/445/1745ivo://CDS.VizieR/J/MNRAS/445/1745doi:10.26093/cds/vizier.74451745CDSWorseck G.Prochaska J. X.O'Meara J. M.Becker G. D.Ellison S. L.,Lopez S.Meiksin A.Menard B.Murphy M. T.Fumagalli M.2024-08-14T20:18:15Z2014-10-17T10:15:09ZCDS support team

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

cds-question@unistra.frquasarsspectroscopyultraviolet-astronomyWe present spectra of 163 quasars at z_em_>4.4 taken with the Gemini Multi Object Spectrometers, the largest publicly available sample of high-quality (signal-to-noise ratio S/N~20 per 1.85{AA} pixel) low-resolution (full width at half maximum FWHM~320km/s) rest-frame ultraviolet quasar spectra at these redshifts. The sample was selected from SDSS Data Release 7 with the aim to obtain high-S/N follow-up spectra of the intergalactic HI Lyman series and Lyman continuum absorption at high redshift. Each quasar was observed with the GMOS B600 (FWHM~320km/s) and R400 (FWHM~360km/s) gratings to cover the rest-frame wavelength range from ~850 to ~1500{AA}. Here we make the spectra available in reduced form. The accompanying paper presents a detailed description the sample and a measurement of the mean free path to Lyman limit photons in the IGM, based on stacked rest-frame quasar spectra.2014MNRAS.445.1745Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/445/1745CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/445/1745https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/445/1745http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/445/1745https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/445/1745https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/445/1745http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/445/1745GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/445/1745/qsos (Quasars observed with GMOS B600 and R400 gratings and GGG quasar emission redshifts)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/445/1745/qsos?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/445/1745/qsos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/445/1745/qsos?GETtext/xml+votable180.050000true2.813458314.76716670.0055555555555555566/4101 4157 4227 4242 4352 4466 4475 4626 4641 4660 4754 4872 4905 4931 5065 5098 5121 5170 5186 5230 5295 5331 5400 5407 5458 5537 5752 5779 5923 5935 6071 6096 6112 6129 6133 6238 6917 7183 7197 7293 7378 7464 7478 7522 8211 8224 8227 8301 8319 8321 8323 8354 8481 8515 8542 8553 8562 8638 8670 8672 8722 8819 8829 8846 9095 9222 9273 9275 9278 9285 9412 9740 9748 9855 9902 9966 10123 10193 10336 10451 10512 10520 10528 10609 10656 10665 10686 10734 10783 10803 10933 10939 10988 11027 11115 11121 11143 11165 11267 11287 11842 11945 17239 17470 17812 18032 18627 18945 19028 19046 19676 19690 20010 22006 23191 25911 25938 25977 26031 26037 26080 26098 26221 26233 26280 26351 26542 26567-26568 26990 27118 27135 27225 27359 27508 27615 27696 27708 27828 27833 27870 27876 27901 27974 28008 28023 28027 28067 28080 28119 28294 28401 28419 28530 28560 28572 28612 28614 30037 31529 31629 36725 367922.381800341673347e-19 2.821731604724377e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/445/1745?format=asciiUVdefaultJ/MNRAS/445/1745/qsosQuasars observed with GMOS B600 and R400 gratings and GGG quasar emission redshiftsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS Quasar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainimagSDSS i band magnitudemagphot.mag;em.opt.IfloatzSDSSSDSS pipeline redshift (2)src.redshift;pos.heliocentricfloate_zSDSSEstimated SDSS redshift uncertainty (3)stat.errorfloatspShow the R400+B600 spectra (470-1040nm)meta.ref.urlcharzGMOSRedshift measured in GMOS spectrasrc.redshift;pos.heliocentricfloate_zGMOSEstimated GMOS redshift uncertainty (1)stat.errorfloatInstInstrument used (GMOS-North, GMOS-South)instr.setupcharminB600Minimum wavelength in GMOS B600 spectrum0.1nmem.wlintmaxB600Maximum wavelength in GMOS B600 spectrum0.1nmem.wlintminR400Minimum wavelength in GMOS R400 spectrum0.1nmem.wlintmaxR400Maximum wavelength in GMOS R400 spectrum0.1nmem.wlintSNSignal-to-Noise ratio (4)stat.snrintFlag[0/7]? Flag describing quasar spectrum (G1)meta.code.errorintnullableFile1File with B600 spectrum in subdirectory "sp"meta.notecharFile2File with R400 spectrum in subdirectory "sp"meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharEmLinesEmission lines used for our redshift estimate with the Shen et al. (2007, Cat. J/AJ/133/2222) methodinstr.setupcharzSRedshift using the Shen et al. (2007, Cat. J/AJ/133/2222) methodsrc.redshift;pos.heliocentricfloate_zSrms uncertainty on zSstat.errorfloatzH? Redshift and 1sigma error from Hewett & Wild (2010, Cat. J/MNRAS/405/2302)src.redshift;pos.heliocentricfloatnullablee_zH? rms uncertainty on zHstat.errorfloatnullableJ/MNRAS/445/1745/table1GGG surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSQuasar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharimagSDSS i band magnitudemagphot.mag;em.opt.IfloatzSDSS pipeline redshift (Schneider et al., 2010AJ....139.2360S, Cat. VII/260src.redshiftfloatObs.dateUT date of observation with Gemini/GMOStime.epoch;obsnullableInstInstrument (GMOS-N/S)instrcharExpTimeBExposure time with GMOS B600 gratingstime.duration;obs.exposureintExpTimeRExposure time with GMOS R400 gratingstime.duration;obs.exposureintlambdaBl? Wavelength coverage with GMOS B600 grating0.1nmem.wlintnullablelambdaBu? Wavelength coverage with GMOS B600 grating0.1nmem.wlintnullablelambdaRl? Wavelength coverage with GMOS R400 grating0.1nmem.wlintnullablelambdaRu? Wavelength coverage with GMOS R400 grating0.1nmem.wlintnullableS/N? Signal-to-Noise ratio per 2.76A pixel at rest-frame wavelength 1450A (R400)0.1nmstat.snr;instr.pixelintnullableFlag[0/7]? Flag describing quasar spectrum (G1)meta.code.errorintnullable