J/ApJS/236/39ivo://CDS.VizieR/J/ApJS/236/39doi:10.26093/cds/vizier.22360039CDSChen Z.-F.Pang T.-T.He B.Huang Y.2018-10-22T12:57:31Z2018-09-05T13:30:49ZCDS support team

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

cds-question@unistra.frquasarsvisible-astronomyspectroscopyredshiftedline-intensitiesWe assemble 207 variable quasars from the Sloan Digital Sky Survey, all with at least 3 observations, to analyze CIV narrow absorption doublets, and obtain 328 CIV narrow absorption line systems. We find that 19 out of 328 CIV narrow absorption line systems were changed by |{Delta}W_r_^{lambda}1548^|>=3{sigma}_{Delta}Wr_^{lambda}1548^ on timescales from 15.9 to 1477 days at rest-frame. Among the 19 obviously variable CIV systems, we find that (1) 14 systems have relative velocities {upsilon}_r_>0.01c and 4 systems have {upsilon}_r_>0.1c, where c is the speed of light; (2) 13 systems are accompanied by other variable CIV systems; (3) 9 systems were changed continuously during multiple observations; and (4) 1 system with {upsilon}_r_=16862km/s was enhanced by {Delta}W_r_^{lambda}1548^=2.7{sigma}_{Delta}Wr_^{lambda}1548^ in 0.67 day at rest-frame. The variations of absorption lines are inversely correlated with the changes in the ionizing continuum. We also find that large variations of CIV narrow absorption lines are form differently over a short timescale.2018ApJS..236...39Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/236/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)VII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017)J/ApJ/613/129 : Equivalent widths of QSOs (Wise+, 2004)J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)J/ApJ/708/427 : Type 2 AGNs with double-peaked [OIII] lines (Liu+, 2010)J/ApJ/769/95 : [NeV] or [NeIII] double peaked SDSS quasars (Barrows+, 2013)J/ApJ/777/168 : CIV & SiIV broad absorption line troughs (Filiz+, 2013)J/MNRAS/434/163 : QSOs narrow absorption line variability (Hacker+, 2013)J/ApJS/210/7 : BOSS narrow CIV absorption lines. I. zem<=2.4 (Chen+, 2014)J/ApJS/215/12 : BOSS narrow CIV absorption lines. II. zem>2.4 (Chen+, 2014)J/MNRAS/450/3904 : Quasars narrow absorption lines from SDSS (Chen+, 2015)J/MNRAS/454/3962 : 188 CIV BAL QSOs from SDSS DR7 (He+, 2015)J/ApJ/814/150 : Variability of SDSS broad absorption line QSOs (Wang+, 2015)J/MNRAS/463/24 : AGNs with double-peaked narrow emission lines (Lyu+, 2016)J/ApJ/825/25 : NALs of lensed QSO J1029+2623 (Misawa+, 2016)J/MNRAS/462/3285 : XQ-100 targets equivalent widths (Perrotta+, 2016)http://www.sdss.org/ : SDSS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/236/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/236/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/236/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/236/39https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/236/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/236/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/236/39/table1 (Catalog of CIV narrow absorption line systems for 166 SDSS quasars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/39/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/39/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/39/table1?GETtext/xml+votable180.050000true2.92825.92697220.0055555555555555565/4438 6/0 2070 2077 2119 2229 4109 4116 4136 4178 4229 4476 4569 4662 5014 5110 5181 5182 5302 5492 5517 5597 5651 5684 5703 5861 5902 5987 6038 6075 6220 6223 6471 6486 6513 6517 6557 6559 6565 6580 6584 6596 6601 6642 6644 6648 6928 7173 7237 7243 7258 7388 7460 8208 8474 8521 8543 8910 9050 9626 9633 9769 9975 10438 10544 10608 10688 10717 10724 10816 10853 11044 11136 11286 11328 11947 12627 13338 17303 17682 17717 17741 17746 17747 17756 17761 17763 17764 17767 17772 17776 17777 17814 17821 17840 18004 18007 18025 18027 18065 18069 18076 18113 19102 19706 19761 19814 20253 20311 21878 26037 26190 26212 26214 26225 26305 26547 26873 26958 27053 27236 27246 27394 27446 27543 27613 28126 28150 28215 28222 28236 28259 28442 28480 28538 28610 28616 28637 28657 31625 36808 36809https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/236/39?format=asciiOpticaldefaultJ/ApJS/236/39/table1Catalog of CIV narrow absorption line systems for 166 SDSS quasarsSDSSSDSS object name (HHMMSS.ss+DDMMSS.s; J2000)meta.idcharPlate[268/10000] SDSS plate numbermeta.id;instr.plateintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPair[1/1210] Identification number of CIV NAL-pairsmeta.id;meta.mainintMJD[51633/57519] SDSS Modified Julian Datetime.epochintFiber[1/1000] SDSS fiberIDmeta.noteintzem[1.3/4.3] Emission line redshift of the quasarsrc.redshiftfloatzabs[1.3/4.3] Absorption line redshift of the CIV NAL systemsrc.redshiftfloatEW1548[0.04/4.2] Rest frame equivalent width, CIV 1548{AA}0.1nmspect.line.eqWidthfloate_EW1548[0.01/1] Uncertainty in EW15480.1nmstat.errorfloatEW1551[0.03/3.8] Rest frame equivalent width, CIV 1551{AA}0.1nmspect.line.eqWidthfloate_EW1551[0.02/1] Uncertainty in EW15510.1nmstat.errorfloatF1350[0.3/104] 1350{AA} continuum flux from the original SDSS spectra; in 10^-17^erg/s/cm^2^/{AA} units1e-19W.m**-2.nm**-1phot.fluxfloate_F1350[0.2/6.2] Uncertainty for F13501e-19W.m**-2.nm**-1stat.errorfloatvr[-1564/49631] Velocity offset, CIV NAL system with respect to the quasar emission line redshiftkm/sphys.veloc;arith.diffintID[1/328] Identification number of the CIV NAL systemmeta.numberintFlag[-2/2]? Flag (1)meta.code.errorintnullableSL[0/6]? Significance level of the variation (2)stat.fit.goodnessfloatnullableSpInteractive spectrum from SDSS-DR14meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlchar_RAPosition from SDSS names (right ascension part)degpos.eq.ra;meta.main_DEPosition from SDSS names (declination part)degpos.eq.dec;meta.main