J/ApJ/824/130ivo://CDS.VizieR/J/ApJ/824/130doi:10.26093/cds/vizier.18240130CDSGrier C.J.Brandt W.N.Hall P.B.Trump J.R.Filiz Ak N.Anderson S.F.,Green P.J.Schneider D.P.Sun M.Vivek M.Beatty T.G.Brownstein J.R.,Roman-Lopes A.2017-12-06T07:38:43Z2016-09-30T12:20:28ZCDS support team

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

cds-question@unistra.frquasarssurveysabsolute-magnituderedshiftedWe present results from the largest systematic investigation of broad absorption line (BAL) acceleration to date. We use spectra of 140 quasars from three Sloan Digital Sky Survey programs to search for global velocity offsets in BALs over timescales of ~2.5-5.5 years in the quasar rest frame. We carefully select acceleration candidates by requiring monolithic velocity shifts over the entire BAL trough, avoiding BALs with velocity shifts that might be caused by profile variability. The CIV BALs of two quasars show velocity shifts consistent with the expected signatures of BAL acceleration, and the BAL of one quasar shows a velocity-shift signature of deceleration. In our two acceleration candidates, we see evidence that the magnitude of the acceleration is not constant over time; the magnitudes of the change in acceleration for both acceleration candidates are difficult to produce with a standard disk-wind model or via geometric projection effects. We measure upper limits to acceleration and deceleration for 76 additional BAL troughs and find that the majority of BALs are stable to within about 3% of their mean velocities. The lack of widespread acceleration/deceleration could indicate that the gas producing most BALs is located at large radii from the central black hole and/or is not currently strongly interacting with ambient material within the host galaxy along our line of sight.2016ApJ...824..130Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/824/130CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)VII/270 : SDSS quasar catalog: tenth data release (Paris+, 2014)VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)J/MNRAS/454/3962 : 188 CIV BAL QSOs from SDSS DR7 (He+, 2015)J/MNRAS/449/1593 : CIV absorption in BAL QSOs (Baskin+, 2015)J/MNRAS/440/799 : BAL QSOs MgII & AlIII variability (Vivek+, 2014)J/ApJS/215/12 : BOSS narrow CIV absorption lines. II. zem>2.4 (Chen+, 2014)J/ApJS/210/7 : BOSS narrow CIV absorption lines. I. zem<=2.4 (Chen+, 2014)J/ApJ/778/98 : Cross-correlation of SDSS QSOs & BOSS galaxies (Shen+, 2013)J/ApJ/777/168 : CIV & SiIV BAL troughs in SDSS (Filiz+, 2013)J/ApJ/763/37 : SDSS QSOs. I. 1.5<z<4.5 CIV absorbers (Cooksey+, 2013)J/ApJS/199/3 : The quasars MMT-BOSS pilot survey (Ross+, 2012)J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)J/ApJ/709/611 : The multi-component absorber QSO 0318-0600 (Dunn+, 2010)J/ApJ/696/924 : UV and X-Ray radio-quiet QSOs (Gibson+, 2009)J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/ApJ/692/758 : BAL QSOs in SDSS-DR5 (Gibson+, 2009)J/ApJ/685/773 : X-ray-UV relations in SDSS DR5 QSOs (Gibson+, 2008)J/ApJ/613/682 : AGN central masses & broad-line sizes (Peterson+, 2004)J/A+AS/123/529 : UV-excess quasar candidates around NGC 450 (Gosset+ 1997)J/A+A/283/759 : CIV QSO absorption systems (Petitjean+ 1994)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/ApJ/824/130https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/824/130http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/824/130https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/824/130https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/824/130http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/824/130GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/824/130/table2 (Quasar observation information)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/824/130/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/824/130/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/824/130/table2?GETtext/xml+votable180.050000true2.6080.91320.0055555555555555566/2 5598 5611 5613 5615 5627 5807 5834 5871 5878 5879 5886 5912 5914 5938 5942 5945 5955 5970 5977 5979 5991 5995 6018 6022 6023 6027 6048 6051 6080 6085 6098 6513 6517 6522 6559 6588 6606 6640 6642 6644 7173 7178 7186 7190 7199 7229 7237 7246 7259 7260 7267 7269 7273 7275 7278 7318 7365 7366 7367 9211 10687 10729 10730 10969 10983 10987 10988 11036 11047 11057 11058 11265 11266 11272 11425 11426 17406 17407 17727 17743 17746 17747 17751 17753 17754 17756 17757 17764 17766 17767 17774 17776 17816 17828 17830 17832 17840 17857 17997 18004 18007 18008 18012 18026 18027 18063 18069 18076 18077 18081 18084 18086 18087 18092 18098 18114 18178 18772 18781https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/824/130?format=asciiOpticaldefaultJ/ApJ/824/130/table2Quasar observation informationz[1.6/4] Spectroscopic redshift (1)src.redshiftfloatiMag[-28.7/-25.8] Absolute i band magnitude (2)magphys.magAbsfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSDSS.dateUT date of SDSS observationtime.epochnullableSDSS-PltPlate identifier of SDSS observationobs.fieldintSDSS-MJDModified Julian Date of SDSS observationdtime.epochintSDSS-FibFiber identifier of SDSS observationmeta.noteintBOSS.dateUT date of BOSS observationtime.epochnullableBOSS-PltPlate identifier of BOSS observationobs.fieldintBOSS-MJDModified Julian Date of BOSS observationdtime.epochintBOSS-FibFiber identifier of BOSS observationmeta.noteintTDSS.dateUT date of TDSS observationtime.epochnullableTDSS-PltPlate identifier of TDSS observationobs.fieldintTDSS-MJDModified Julian Date of TDSS observationdtime.epochintTDSS-FibFiber identifier of TDSS observationmeta.noteintSDSS-1700[6/34] SDSS Signal-to-Noise at 1700 Angstromsstat.snrfloatBOSS-1700[6/38] BOSS Signal-to-Noise at 1700 Angstromsstat.snrfloatTDSS-1700[6/66] TDSS Signal-to-Noise at 1700 Angstromsstat.snrfloatBestBest-fit profile for CIV emission line (3)meta.codecharHW10Display improved redshifts catalog from Hewett & Wild, 2010, J/MNRAS/405/2302meta.ref.urlcharDR9Display the SDSS-DR9 photometric catalog (Adelman-McCarthy+, 2012, V/139)meta.ref.urlcharDR10QDisplay the SDSS-DR10 quasar catalog (Paris, 2014, VII/270)meta.ref.urlcharSpInteractive spectrum from SDSSmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharNEDSimbad column added by the CDSmeta.ref.urlchar