CIV NAL systems from SDSS-DR14 quasar spectra J/ApJS/239/23 ivo://CDS.VizieR/J/ApJS/239/23 doi:10.26093/cds/vizier.22390023 CDS Chen Z.-F. Yao M. Pang T.-T. Yi T.-F. Lu M.-M. Liu C.-Q. Nong W.-J.,Liang Q.-Y. Liang J.-Z. Ma S.-H. Wu L.-H. Gan Y.-Q. Zou M.-L. 2020-02-05T07:52:05Z 2020-02-04T12:28:29Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars visible-astronomy spectroscopy line-intensities redshifted Using the quasar spectra from the Sloan Digital Sky Survey, all with two-epoch to six-epoch observations, we search for CIV{lambda}{lambda}1548,1551 narrow absorption doublets in spectral data from the blue wing {upsilon}r=30000km/s until the red wing of CIV{lambda}1549 emission lines. We have obtained 21239 CIV narrow absorption line (NAL) systems, of which 647 systems were significantly changed on timescales from {Delta}MJD=0.24 to 1842.38 days at rest-frame. Both samples of the C IV NAL systems with multi-epoch observations and the variable C IV NAL systems are the largest ones to date. The offset velocity distribution of the variable C IV NALs from quasars has a peak at {upsilon}r~2000km/s and gently extends to a larger offset velocity. There are 110 variable C IV NALs with {upsilon}r>12000km/s. In addition, about 10% intrinsic C IV NALs show time variability on a timescale of <2000 days. We find that the variations of C IV NALs are positively or negatively correlated with the alternations of quasar continua. The two kinds of correlations suggest that the variable C IV NALs included in our absorber catalog can be classified into at least two populations: (1) highly ionized systems that are dominated by highly ionized absorbing gas and negatively respond to the fluctuations of quasar emissions; and (2) lowly ionized systems that are dominated by lowly ionized absorbing gas and positively respond to fluctuations of quasar emissions. We also find that the absolute fractional changes in the absorption strengths of C IV NALs are inversely correlated with absorption strengths. 2018ApJS..239...23C https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/239/23 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/282 : The SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007) VII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017) J/ApJ/613/129 : Equivalent widths of QSOs (Wise+, 2004) J/ApJS/171/1 : Census of QSOs Narrow Absorption Lines (Misawa+, 2007) J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010) J/ApJS/199/3 : The quasars MMT-BOSS pilot survey (Ross+, 2012) J/ApJ/777/168 : CIV and SiIV BAL troughs in SDSS (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/449/1593 : CIV absorption in BAL QSOs (Baskin+, 2015) 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/ApJ/824/130 : SDSS/BOSS/TDSS CIV BAL quasars (Grier+, 2016) J/MNRAS/462/2980 : BOSS narrow CIV absorption lines. III. (Chen+, 2016) J/MNRAS/462/3285 : XQ-100. X-shooter quasar spectra (Perrotta+, 2016) J/ApJS/235/11 : Absorption features in SDSS. I. MgII doublets (Chen+, 2018) J/ApJS/236/39 : CIV narrow ALS in SDSS-DR14 (Chen+, 2018) J/A+A/616/A114 : CIV BAL disappearance in SDSS QSOs (De Cicco+, 2018) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/239/23 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/239/23 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/239/23 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/239/23 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/239/23 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/239/23 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/239/23/qsos (List of quasars; table added by CDS) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/239/23/qsos? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/239/23/qsos? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/239/23/qsos? 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Should Not be used for identification. meta.record int Pair [1/24993] Identification number of a NAL pair meta.id int SDSS SDSS-DR14Q (Paris+, 2018A&A...613A..51P) designation (HHMMSS.ss+DDMMSS.s; J2000) (G1) meta.id;meta.main char Plate [266/10000] Spectroscopic Plate number meta.id;instr.plate int MJD [51609/57520] Spectroscopic MJD time.epoch int Fiber [1/1000] Spectroscopic Fiber number meta.id int zem [1.37/5.1] Emission-line redshift of the quasar src.redshift float zabs [1.32/4.7] Redshift of absorption line system src.redshift float rew96 [0.03/3.9] Rest-frame equivalent width CIV{lambda}1548{AA} (1) 0.1nm spect.line.eqWidth float e_rew96 [0/1.2] Uncertainty in rew96 (1) 0.1nm stat.error float rew03 [0.03/3.4] Rest-frame equivalent width CIV{lambda}1551{AA} (1) 0.1nm spect.line.eqWidth float e_rew03 [0/0.9] Uncertainty in rew03 (1) 0.1nm stat.error float F1350 [1.5/683] The 1350{AA} continuum flux (2) 1e-19W.m**-2.nm**-1 phot.flux float e_F1350 [0.1/13] Uncertainty in F1350 (2) 1e-19W.m**-2.nm**-1 stat.error float Vrabs [-44077/29977] Offset velocity of the CIV NAL system (3) km/s phys.veloc;arith.diff int ID [1/21239] Identification number of the CIV NAL system meta.number int NAL [-2/2]? NAL symbol (4) meta.code int nullable SL [0/19.3]? Significance level (SL) of the variation (5) stat.fit.goodness float nullable Sp Interactive spectrum from SDSS-DR14 meta.ref.url char
J/ApJS/239/23/qsos List of quasars; table added by CDS recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS-DR14Q (Paris+, 2018A&A...613A..51P) designation (HHMMSS.ss+DDMMSS.s; J2000) (G1) meta.id;meta.main char primary zem [1.37/5.1] Emission-line redshift of the quasar src.redshift float DR12Q Display data from the SDSS-DR12 quasar catalog (Paris+, 2017, VII/279) meta.ref.url int nullable CIV Display the CIV NAL sytem data for this quasar (link to Table 1) meta.number int nullable Simbad Simbad column added by the CDS meta.ref.url char NED NED column added by the CDS meta.ref.url char _RA Positions from SDSS-DR14Q names (right ascension part) deg pos.eq.ra;meta.main _DE Positions from SDSS-DR14Q names (declination part) deg pos.eq.dec;meta.main