J/MNRAS/469/323ivo://CDS.VizieR/J/MNRAS/469/323doi:10.26093/cds/vizier.74690323CDSCapellupo D.M.Hamann F.Herbst H.Brandt W.N.Ge J.Paris I.,Petitjean P.Schneider D.P.Streblyanska A.York D.2024-08-17T20:19:19Z2020-04-21T13:34:55ZCDS support team

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

cds-question@unistra.frquasarsline-intensitiesBroad absorption lines (BALs) found in a significant fraction of quasar spectra identify high-velocity outflows that might be present in all quasars and could be a major factor in feedback to galaxy evolution. Understanding the nature of these flows requires further constraints on their physical properties, including their column densities, for which well-studied BALs, such as CIV {lambda}{lambda}1548,1551, typically provide only a lower limit because of saturation effects. Low-abundance lines, such as PV {lambda}{lambda}1118,1128, indicate large column densities, implying that outflows more powerful than measurements of CIV alone would indicate. We search through a sample of 2694 BAL quasars from the Sloan Digital Sky Survey III/Baryon Oscillation Spectroscopic Survey data release 9 quasar catalogue for such absorption, and we identify 81 'definite' and 86 'probable' detections of PV broad absorption, yielding a firm lower limit of 3.0-6.2 per cent for the incidence of such absorption among BAL quasars. The PV-detected quasars tend to have stronger CIV and SiIV absorption, as well as a higher incidence of LoBAL absorption, than the overall BAL quasar population. Many of the PV-detected quasars have CIV troughs that do not reach zero intensity (at velocities where PV is detected), confirming that the outflow gas only partially covers the UV continuum source. P V appears significantly in a composite spectrum of non-PV-detected BAL quasars, indicating that P V absorption (and large column densities) is much more common than indicated by our search results. Our sample of PV detections significantly increases the number of known PV detections, providing opportunities for follow-up studies to better understand BAL outflow energetics.2017MNRAS.469..323Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/469/323CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Ahn, 2012)VII/269 : SDSS Quasar Catalog, DR9Q (Paris+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/469/323https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/469/323http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/469/323https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/469/323https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/469/323http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/469/323GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/469/323/table1 (Properties of quasars with definite PV detections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/469/323/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/469/323/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/469/323/table1?GETtext/xml+votable180.050000true0.5090092-0.70451750.005555555555555556Cone search capability for table J/MNRAS/469/323/tablea1 (Properties of quasars with 'probable' PV detections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/469/323/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/469/323/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/469/323/tablea1?GETtext/xml+votable180.050000true4.04494941.60224830.0055555555555555566/4101 4111 4270 4620 4642 4654 4748 4803 5388 5456 5458 5541 5549 5680-5681 5703 5720 5742 5888 5891 6164 6268 6395 6403 6405 6423 6453 6468 6498 6575 6579 6587 6592 6600 6603 6646-6647 7337 8248 8320 8328 8526 8580 8601 8628-8629 8672 9084 9243 9280 9417 9512 9525 9732 10356 10443 10476 10523 10765 10767 10824 10829 17407 17654 17689 17725 17744 17747 17756 17835-17838 17974 17980 17991 17993 18032 18043 18068 18074-18075 18085 18089 18104 18119 18128 18148 18243-18244 18292 18317 18375 18389 18765 18794-18795 18801 18845 19029 19050 19138 19459 21872 21886 21973 22487 25918 25957 26058 26075 26083 26094 26193 26200 26281 26290 26304 26442 26497 26970 26972 26988 27014 27020 27038 27236 27247 27283 27286 27329 27342 27346 27351 27398 27403 27407 27413 27420-27422 27428 27430 27524 27666 27669 27715 27721 28575 28615 28653 31295 31407 31413 31437 31469 31474 31617 31660 31669 32443 32488 491192.381800341673347e-19 2.821731604724377e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/469/323?format=asciidefaultJ/MNRAS/469/323/table1Properties of quasars with definite PV detectionszemEmission redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharimagSDSS i magnitudemagphot.mag;em.opt.IfloatBIBalnicity indexkm/smeta.code;spect.indexinte_BIrms uncertainty on BIkm/sstat.errorintREW(CIV)? CIV reduced equivalent width0.1nmspect.line.eqWidthfloatnullableREW(SiIV)? SiIV reduced equivalent width0.1nmspect.line.eqWidthfloatnullableREW(AlIII)? AlIII reduced equivalent width0.1nmspect.line.eqWidthfloatnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_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.mainJ/MNRAS/469/323/tablea1Properties of quasars with 'probable' PV detectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharzemEmission redshiftsrc.redshiftfloatimagSDSS i magnitudemagphot.mag;em.opt.IfloatBIBalnicity indexkm/smeta.code;spect.indexinte_BIrms uncertainty on BIkm/sstat.errorintREW(CIV)? CIV reduced equivalent width0.1nmspect.line.eqWidthfloatnullableREW(SiIV)? SiIV reduced equivalent width0.1nmspect.line.eqWidthfloatnullableREW(AlIII)? AlIII reduced equivalent width0.1nmspect.line.eqWidthfloatnullableSloanDisplay the online SDSS data for the nearest objectmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_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.main