J/MNRAS/482/3458ivo://CDS.VizieR/J/MNRAS/482/3458doi:10.26093/cds/vizier.74823458CDSMurphy M.T.Kacprzak G.G.Savorgnan G.A.D.Carswell R.F.2024-08-19T20:15:00Z2022-08-02T09:44:06ZCDS support team

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

cds-question@unistra.frquasarsspectroscopyredshiftedapparent-magnitudeWe present the first data release (DR1) of the UVES Spectral Quasar Absorption Database (SQUAD), comprising 467 fully reduced, continuum-fitted high-resolution quasar spectra from the Ultraviolet and Visual Echelle Spectrograph (UVES) on the European Southern Observatory's Very Large Telescope. The quasars have redshifts z=0-5, and a total exposure time of 10 million seconds provides continuum-to-noise ratios of 4-342 (median 20) per 2.5km/s pixel at 5500{AA}. The SQUAD spectra are fully reproducible from the raw, archival UVES exposures with open-source software, including our uves_popler tool for combining multiple extracted echelle exposures which we document here. All processing steps are completely transparent and can be improved upon or modified for specific applications. A primary goal of SQUAD is to enable statistical studies of large quasar and absorber samples, and we provide tools and basic information to assist three broad scientific uses: studies of damped Lyman-{alpha} systems (DLAs), absorption-line surveys, and time-variable absorption lines. For example, we provide a catalogue of 155 DLAs whose Lyman-{alpha} lines are covered by the DR1 spectra, 18 of which are reported for the first time. The HI column densities of these new DLAs are measured from the DR1 spectra. DR1 is publicly available and includes all reduced data and information to reproduce the final spectra.2019MNRAS.482.3458Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/482/3458CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/482/3458https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/482/3458http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/482/3458https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/482/3458https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/482/3458http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/482/3458GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/482/3458/table1 (The UVES SQUAD DR1 475 quasars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/482/3458/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/482/3458/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/482/3458/table1?GETtext/xml+votable180.050000true0.4580833-1.99427780.0055555555555555566/0 2 60 175 579 4124 4140 4168 4175 4178 4273 4279 4324 4354 4364 4394 4436 4448 4544 4634 4660 4696 4807 4820 4850 5272 8234 8289 8371 8395 8487 8569 8707 8709 8758 8858 9095 9252 12563 16386 16417 16494 16553 16555 16585 16589 16597 16625 16640 16644 16652-16653 16656 16658 16664 16677 16752 16798 17011 17190 17203 17212 17239 17257 17314 17317 17319 17322 17404 17406 17414 17485 17488 17516 17518 17639 17730 17735 17755-17756 17812 17816 17818 17833 17835-17836 17857 17895 17917 17979 18001-18002 18004-18005 18007 18022 18060 18081 18084 18086 18092 18096 18177 18200 18208-18210 18271 18299 18307 18366 18388 18466 18504 18506 18520 18601 18624 18642 18661 18669 18756 18769 18780 18790 18858 19026 19101 19154 19166 19190 19206 19398 19490 19680 19682 19993 20032 20099 20450 20516 20725 20731 21012 21126 21180 21935 21991 22544 22578 22593 22754 22917 23045 23099 23121 23190-23191 23210 23397 24084 24809 24845 24941 25009 25054 25117 25120 25142 25245 25285 25294 25302 25307 25344 25413 25427 25540 25628 25677 25697 25810 25827 25829 25839 25850 25863 25933-25934 25943 25950 25961 25965 25972 25976 25987 26000 26019 26100 26115 26125 26165-26167 26175 26181 26193 26195-26196 26239 26245 26258 26398 26453 26479 26499 26614 26724 26878 26881-26882 27002 27034 27037 27041 27053 27092 27161 27215 27232 27269 27310 27337-27338 27415 27423 27440 27460 27514 27554 27577 27650 27652 27658 27687 27704 27728 27747 27749 27756 27773 27841 27845 27855 27857 27879 27909 27943 28039 28042 28171 28174 28197 28208 28258 28315 28538 28548 29570 29675 29795 31310 31313 31451 31520 31686 32466 33269 33632 33661 33684 33746 33827 33971 34019 34044 34107 34202 34210 34264 34291 34379 34424 34437 34461 34485 34503 34517 34570-34572 34582 34586 34718 34763 34850 34919 34950 34978 35006 35123 35213 35241-35242 35258 35277 35281 35430 35496 35522 35570 35584-35585 35595 35627 35737 35751 35760 35769 35774 35781 35786 35801 35806 35836 35842 35894 35901 35916 35945 35957 35995 36012 36090 36101 36126 36130 36151 36217 36241 36265 36271 36313 36320 36346 36417 36554 36655 36734 36803 36834 36840 38639 38744 38767 38787 38853 38878 39100 39456 40060 40446 41059 43366 43399 43903 43983 44000 44028 44034 44269 44549 44668 44799 44833 44938 45006 45011 45393 45460 45526 45621 46208 46251 46373 46413 46418 46474 46527 46529 46542 46574 46638 46649 46651 46662 46704 46731 46737 46753 46850 46856 46901 46924 46953 46964 47007 47016 47091 47553 47941 48149 48154 48228 48474 48478 48589 48595 48610 48757 491062.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/482/3458?format=asciidefaultJ/MNRAS/482/3458/table1The UVES SQUAD DR1 475 quasarsSimbadNameSimbad column added by the CDSmeta.idcharnullableDEJ2000Declination (J2000)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzemadoptAdopted emission redshiftsrc.redshift;pos.heliocentricfloatRAUUVES Right ascension (J2000) (1)pos.eq.raDEUUVES Declination (J2000) (1)pos.eq.decRASSSS Right ascension (J2000) (2)pos.eq.raDESSSS Declination (J2000) (2)pos.eq.decBmag? B magnitude from SSS (2)magphot.mag;em.opt.BfloatnullableR1mag? R1 magnitude from SSS (2)magphot.mag;em.opt.RfloatnullableR2magR2 magnitude from SSS (2)magphot.mag;em.opt.RfloatImag? I magnitude from SSS2 (2)magphot.mag;em.opt.IfloatnullableSDSSSDSS name (SDSS JHHMMSS.ss+DDMMSS.s) (3)meta.idcharzemSDSS? Emission redshift from SDSS (3)src.redshift;pos.heliocentricfloatnullableumag? u-band magnitude from SDSS (3)magphot.mag;em.opt.Ufloatnullablegmag? g-band magnitude from SDSS (3)magphot.mag;em.opt.Bfloatnullablermag? r-band magnitude from SDSS (3)magphot.mag;em.opt.Rfloatnullableimag? i-band magnitude from SDSS (3)magphot.mag;em.opt.Ifloatnullablezmag? z-band magnitude from SDSS (3)magphot.mag;em.opt.IfloatnullableNEDNED name (4)meta.idcharzemNED? Emission redshift from NED (4)src.redshift;pos.heliocentricfloatnullableSNameSimbad namemeta.idcharzemSim? Emission redshift from Simbadsrc.redshift;pos.heliocentricfloatnullablespecstatSpectrum status (5)meta.codecharNexpNumber of UVES exposuresmeta.numberintExpTimeTotal exposure durationstime.duration;obs.exposureintWavStartStarting wavelenght0.1nmem.wl;phys.atmol.transitiondoubleWavEndEnding wavelenght0.1nmem.wl;phys.atmol.transitiondoubleRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainWavCvgWavelenght coverage0.1nminstr.bandwidthcharDispDispersion of the final spectrumkm/sinstr.dispersionfloatCNRContinuum-to-noise ratio0.1nmstat.snrcharNRPNominal resolving powerspect.resolutioncharSlitUVES Slit widthsarcsecinstr.setupcharBinningsUVES On-chip binnings usedinstr.setupcharSettingsUVES wavelength settingsnmem.wlcharb_Seeing? Prevailing minimum seeing value reported in the ESO Science Archivearcsecinstr.obsty.seeing;stat.minfloatnullableSeeing? Prevailing median seeing value reported in the ESO Science Archivearcsecinstr.obsty.seeing;stat.medianfloatnullableB_Seeing? Prevailing maximum seeing value reported in the ESO Science Archivearcsecinstr.obsty.seeing;stat.maxfloatnullableProgIDESO program IDmeta.id;obscharObsNameTarget name as defined by the Principal Investigatormeta.idcharzabsDLA absorption redshiftsrc.redshiftcharlogNHIDLA HI column densitylog(cm**-2)phys.columnDensitychare_logNHIError on logNHIlog(cm**-2)stat.errorcharr_logNHIReference of logNHImeta.ref;pos.framecharNameUVES SQUAD DR1 quasar name (JHHMMSS+DDMMSS) (G1)meta.id;meta.maincharJ/MNRAS/482/3458/table3The DR1 155 DLAsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameUVES SQUAD DR1 quasar name (JHHMMSS+DDMMSS) (G1)meta.id;meta.maincharzemQuasar emission redshifts taken from a hierarchy of cross-matched data basessrc.redshift;pos.heliocentricfloatzabsAbsorption redshiftsrc.redshiftfloatlogNHIHI column densitylog(cm**-2)phys.columnDensityfloate_logNHIError on logNHIlog(cm**-2)stat.errorfloatr_logNHIReference of logNHI (1)meta.ref;pos.frameint