J/MNRAS/422/3370ivo://CDS.VizieR/J/MNRAS/422/3370doi:10.26093/cds/vizier.74223370CDSKing J.A.Webb J.K.Murphy M.T.Flambaum V.V.Carswell R.F.,Bainbridge M.B.Wilczynska M.R.Koch F.E.2024-07-17T20:15:50Z2013-03-20T13:23:03ZCDS support team

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

cds-question@unistra.frquasarsredshiftedspectroscopyQuasar absorption lines provide a precise test of whether the fine-structure constant, {alpha}, is the same in different places and through cosmological time. We present a new analysis of a large sample of quasar absorption-line spectra obtained using the Ultraviolet and Visual Echelle Spectrograph (UVES) on the Very Large Telescope (VLT) in Chile. We apply the many-multiplet method to derive values of {DELTA}{alpha}/{alpha}==({alpha}z-{alpha}0)/{alpha}0 from 154 absorbers, and combine these values with 141 values from previous observations at the Keck Observatory in Hawaii.2012MNRAS.422.3370Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/422/3370CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/422/3370https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/422/3370http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/422/3370https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/422/3370https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/422/3370http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/422/3370GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/422/3370/tablea1 (Table of all VLT and Keck da/a values)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/422/3370/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/422/3370/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/422/3370/tablea1?GETtext/xml+votable180.050000true1.33423755.40299110.0055555555555555566/2172 2348 3971 4168 4273 4279 4947 5272 5306 5563 5723 5952 6591 6652 7857 8552 9112 9114 10298 10501 10753 10807 10940 11040 11498 11581 11723 11765 14946 16269 16589 16625 16656 16831 17190 17317 17404 17639 17735 17751 17816 17895 17917 18042 18081 18084 18307 18366 18769 18858 19190 19206 19416 19483 19680 19682 19807 20516 21012 22578 22593-22594 23016 23121 25120 25285 25307 25540 25697 25950 25976 26245 26276 26323 26453 26479 26614 26882 27232 27578 27650 27704 27728 27756 27841 28039 28042 28086 28281 28532 28539 28666 34019 34107 34210 34379 34437 34485 34503 35006 35258 35496 35595 35627 35836 36086 36130 36417 38767 38853 38878 39100 40446 40479 43903 44269 46418 46638 46651 46704 47007 47091 47941 48474 48610https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/422/3370?format=asciiOpticaldefaultJ/MNRAS/422/3370/tablea1Table of all VLT and Keck da/a valuesSeqSequential numbermeta.recordintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQSOQSO name (JHMMSS+DDMMSS)meta.id;meta.maincharzemEmission redshiftsrc.redshiftfloatzabsAbsorption redshiftsrc.redshiftdoubleda/aValue of ({Delta}{alpha})/{alpha} = ({alpha}_z_{alpha}_0_)/{alpha}_0_ ({alpha}_z_ at the zabs redshift)stat.fit.paramfloate_da/aError on da/astat.errorfloatSampleSample (Keck or VLT)src.samplecharFlag[1/3] sig_rand_flag value (1)meta.code.errorintOut[0/1] indicates whether the system was identified as an outlier and removed from consideration (2)meta.codeint_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.mainSimbadNameSimbad column added by the CDSmeta.idchar