J/MNRAS/449/1593ivo://CDS.VizieR/J/MNRAS/449/1593doi:10.26093/cds/vizier.74491593CDSBaskin A.Laor A.Hamann F.2024-08-14T20:20:49Z2016-01-06T15:25:12ZCDS support team

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

cds-question@unistra.frquasarsredshiftedline-intensitiesThere is a large diversity in the CIV broad absorption line (BAL) profile among BAL quasars (BALQs). We quantify this diversity by exploring the distribution of the CIV BAL properties, full width at half-maximum (FWHM), maximum depth of absorption and its velocity shift (v_md_), using the Sloan Digital Sky Survey DR7 quasar catalogue. We find the following: (i) Although the median CIV BAL profile in the quasar rest-frame becomes broader and shallower as the UV continuum slope ({alpha}UV at 1700-3000{AA}) gets bluer, the median individual profile in the absorber rest-frame remains identical, and is narrow (FWHM=3500km/s) and deep. Only 4 percent of BALs have FWHM>10000km/s. (ii) As the HeII emission equivalent width (EW) decreases, the distributions of FWHM and v_md_ extend to larger values, and the median maximum depth increases. These trends are consistent with theoretical models in which softer ionizing continua reduce overionization, and allow radiative acceleration of faster BAL outflows. (iii) As {alpha}_UV_ becomes bluer, the distribution of v_md_ extends to larger values. This trend may imply faster outflows at higher latitudes above the accretion disc plane. (iv) For non-BALQs, the CIV emission line decreases with decreasing HeII EW, and becomes more asymmetric and blueshifted. This suggests an increasing relative contribution of emission from the BAL outflow to the Civ emission line as the ionizing spectral energy distribution (SED) gets softer, which is consistent with the increasing fraction of BALQs as the ionizing SED gets softer.2015MNRAS.449.1593Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/1593CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/1593https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/449/1593http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/449/1593https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/449/1593https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/449/1593http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/449/1593GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/449/1593/table1 (Measured emission and absorption properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/449/1593/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/449/1593/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/449/1593/table1?GETtext/xml+votable180.050000true0.0575061-0.9130.0055555555555555565/4714 6/1 30 49 548 553 972 2091 4097 4099-4100 4102-4103 4105 4108 4111 4115 4117 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26420-26421 26430 26433 26454 26459-26460 26485 26495 26519 26527-26528 26539 26553 26559 26565 26571 26574 26576 26589 26602 26608 26909 26955 26968 26975 26977-26978 26983 26988 26991 26997-26998 27002-27003 27030 27035 27045 27065 27068 27074 27078 27083-27084 27087 27113 27127 27129 27199 27221 27223 27246 27248-27249 27255-27256 27263 27288 27302-27303 27305 27309 27321 27324 27337 27343 27345 27347 27351 27361 27363 27365 27372-27373 27417 27422 27426 27429 27433 27448 27458 27462 27465 27473 27485 27495 27501 27517 27522 27524 27529 27531 27535 27543 27558 27569 27571 27578 27592 27607-27608 27610 27613 27623 27627 27645 27650 27666 27674 27676 27682 27689 27698 27700 27706 27710 27714 27720 27724-27725 27731 27754 27768 27787 27803 27808 27813 27840 27868 27871 27883 27898 27924-27925 27934 27941 27944 27957 27965 27979-27980 27995 27998 28000 28026 28059 28089 28093 28099 28102 28108 28120 28145 28152 28167 28172 28182 28186 28191 28204 28215 28224 28227 28234 28236 28241 28244 28259 28266 28273 28293 28306 28311 28328 28337 28343-28344 28348 28361 28367 28400 28443 28445 28459-28460 28486 28491 28499 28541 28549 28569 28586-28588 28590 28595 28597 28605-28606 28612 28625 28627 28630 28637 28640 28647 28655 28659 28663 28669-28670 30035 30037-30038 30043 30064 31290 31310 31340 31374 31387-31388 31393 31396 31398 31400 31419-31420 31435 31444 31452 31455 31457 31473 31485 31490 31535 31618 31622 31626 31632 31642 31649 31652-31653 31656 31665 31685 31687 31692 31707 31724 31731 32408 32410 32437 32456 32488 32511 32558 32680 36726 36731 36778 36787 36790 36801-36802 36861 45043 45047 45050 48990-48991 49010 49013 49016 49100 49104 49122-49123 49129https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/449/1593?format=asciiOpticaldefaultJ/MNRAS/449/1593/table1Measured emission and absorption propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS DR7 name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainzRedshift from Hewett & Wild (2010, Cat. J/MNRAS/405/2302)src.redshiftfloatEWHeIIMeasured HeII equivalent width0.1nmspect.line.eqWidthfloatalphaUVMeasured between 1710 and 3000{AA} (f_nu_{prop.to}nu^alpha^)spect.indexfloatVmdVelocity shiftkm/sphys.veloc;phys.atmol.lineShiftintCFCIV BAL maximum absorption depth for HeII-EW binning (1)phot.flux.density;arith.ratiofloatFWHMCIV BAL FWHM value for HeII-EW binning (1)km/sspect.line.widthintSloanDisplay the SDSS data for this quasarmeta.ref.urlcharDR7Display the details of the SDSS-DR7 photometry for this sourcemeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar