J/A+A/622/A15ivo://CDS.VizieR/J/A+A/622/A15doi:10.26093/cds/vizier.36220015CDSMorabito L.K.Matthews J.H.Best P.N.Guerkan G.Jarvis M.J.,Prandoni I.Duncan K.J.Hardcastle M.J.Kunert-Bajraszewska M.,Mechev A.P.Mooney S.Sabater J.Roettgering H.J.A.Shimwell T.W.,Smith D.J.B.Tasse C.Williams W.L.2020-11-04T16:00:06Z2019-02-21T17:28:39ZCDS support team

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

cds-question@unistra.frradio-galaxiesactive-galactic-nucleiquasarsWe present a study of the low-frequency radio properties of broad absorption line quasars (BALQSOs) from the LOFAR Two-metre Sky-Survey Data Release 1 (LDR1). The value-added LDR1 catalogue contains Pan-STARRS counterparts, which we match with the Sloan Digital Sky Survey (SDSS) DR7 and DR12 quasar catalogues. We find that BALQSOs are twice as likely to be detected at 144MHz than their non-BAL counterparts, and BALQSOs with low-ionisation species present in their spectra are three times more likely to be detected than those with only high-ionisation species. The BALQSO fraction at 144MHz is constant with increasing radio luminosity, which is inconsistent with previous results at 1.4GHz, indicating that observations at the different frequencies may be tracing different sources of radio emission. We cross-match radio sources between the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) survey and LDR1, which provides a bridge via the LDR1 Pan-STARRS counterparts to identify BALQSOs in SDSS. Consequently we expand the sample of BALQSOs detected in FIRST by a factor of three. The LDR1-detected BALQSOs in our sample are almost exclusively radio-quiet (logr<2), with radio sizes at 144$\,$MHz typically less than 200kpc these radio sizes tend to be larger than those at 1.4GHz, suggesting more extended radio emission at low frequencies. We find that although the radio detection fraction increases with increasing balnicity index (BI), there is no correlation between BI and either low-frequency radio power or radio-loudness. This suggests that both radio emission and BI may be linked to the same underlying process, but are spatially distinct phenomena.2019A&A...622A..15Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/622/A15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/92 : The FIRST Survey Catalog, Version 2014Dec17 (Helfand+ 2015)J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)J/ApJS/228/9 : Physical parameters of ~300000 SDSS-DR12 QSOs (Kozlowski 2017)J/A+A/598/A104 : LOFAR Two-metre Sky Survey (Shimwell+, 2017)J/A+A/622/A1 : LOFAR Two-metre Sky Survey DR1 source catalog (Shimwell+ 2019)J/A+A/622/A4 : LOFAR observations XMM-LSS field (Hale+, 2019)J/A+A/622/A8 : NGC 3184, 4736, 5055 & 5194 LOFAR & WSRT maps (Heesen+, 2019)J/A+A/622/A11 : LoTSS/HETDEX. Optical quasars. I. (Guerkan+, 2019)J/A+A/622/A13 : VLA double-double radio galaxy candidates imagesJ/A+A/622/A23 : LoTSS HCG and MLCG systems (Nikiel-wroczynski+, 2019)J/A+A/623/A71 : LOTSS HETDEX Faraday depth cube (Van Eck+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/622/A15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/622/A15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/622/A15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/622/A15https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/622/A15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/622/A15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/622/A15/ldr1qsos (*Measured and derived parameters for quasars from SDSS DR7/DR12 catalogs within the footprint of the LOFAR Two-metre Sky Survey data realease 1 (LDR1) (corrected version))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/622/A15/ldr1qsos?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/622/A15/ldr1qsos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/622/A15/ldr1qsos?GETtext/xml+votable180.050000true161.032458352.08208330.0055555555555555564/349-351 369 372-374 670-671 685-687 689-694 696-698 706-707 713 5/1375 1391 1395 1485 1487 1500 1509 1511 1520 2655 2671 2675-2678 2735 2739 2780 2796 2800 2819 2822-2823 2834 2840 2842 2848-2849 2851 2857-2860 2864 2944 6/5495 5499 5559 5563 5575 5579 5937 5939 5945 5947 6004 6008 6033 6084 6088 10615 10619 10677 10679 10683 10694-10695 10699 10716-10718 10939 10951 10955 11015 11019 11021-11023 11124 11128 11188 11192 11204 11208 11271 11275 11282-11283 11286-11287 11342 11364 11366 11372 11400-11401 11403 11425-11427 11444 11446 11448 11450 11464-11466 11780 11784https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/622/A15?format=asciiRadiodefaultJ/A+A/622/A15/ldr1qsos*Measured and derived parameters for quasars from SDSS DR7/DR12 catalogs within the footprint of the LOFAR Two-metre Sky Survey data realease 1 (LDR1) (corrected version)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS name From DR12 (HHMMSS.ss+DDMMSS.s) (SDSS_Name)meta.id;meta.maincharTHINGIDUnique SDSS object id (THINGID)meta.idlongzVisually inspected SDSS redshifts (z_v)src.redshift;pos.heliocentricdoubleBALVI[0/1] Flag, visual BAL ident (BAL_VI)meta.codeintBICIVt? Balnicity index for CIV trough (BI_CIVt)km/sspect.line.eqWidthfloatnullableLOBALVIMG[0/1]? Flag, visual LoBAL ident, MgII (LOBAL_VI_MG)meta.codeintnullableLOBALVIAL[0/1]? Flag, visual LoBAL ident, AlIII (LOBAL_VI_AL)meta.codeintnullabler_logMBHSource of MBh measurement (Mbh_source)meta.ref;pos.framecharlogMBH? logarithm of black hole mass (Mbh)log(solMass)phys.massfloatnullablelogLbol? logarithm of bolometric luminosity (log_Lbol)log(1e-07W)phys.luminosityfloatnullablee_logLbol? Error in logarithm of bolometric luminosity (e_log_Lbol)log(1e-07W)stat.errorfloatnullablelogedd? logarithm of Eddington ratio (log_edd)phys.luminosity;arith.ratiofloatnullablef_FIRST[0/1] Flag, DR7/FIRST match (DR7_FIRST_detected)meta.codeintRP20? Peak radio power at 1.4GHz - DR7 (DR7_20cm_peak_power)W/Hzphys.luminosity;em.radio.750-1500MHz;stat.maxdoublenullablee_RP20? Error in Peak radio power at 1.4GHz (e_DR7_20cm_peak_power)W/Hzstat.errordoublenullableLDR1Source name in LDR1 (Cat. J/A+A/598/A104) catalogue (ILTJHHMMSS.ss+DDMMSS.s) (LDR1_Source_Name)meta.idcharRAdeg? Right ascension of LDR1 source (J2000) (LDR1_RA)degpos.eq.ranullableDEdeg? Declination of LDR1 source (J2000) (LDR1_DEC)degpos.eq.decnullableMaj? Deconvolved major axis in LDR1 (DC_Maj)arcsecphys.angSizedoublenullableSize? LOFAR Galaxy Zoo size in LDR1 (LGZ_Size)arcsecphys.angSizedoublenullableLLS? Projected largest linear size (LLS)kpcphys.size.diameterdoublenullableRes[RU] LDR1 resolved or unresolved (Resolved)meta.codecharL144? Radio power at 144MHz (L_144)W/Hzphys.luminosity;em.radio.100-200MHzdoublenullablee_L144? error in radio power at 144MHz (e_L_144)W/Hzstat.errordoublenullablelogR144? Radio loudness at 144MHz (log_R_144)phot.flux.density;em.radio.100-200MHzdoublenullableLDR1optName of LDR1 optical ID (PSO JHHMMSS.sss+DDMMSS.sss) (LDR1_opt_ID_name)meta.idcharRAodeg? Right ascension of LDR1 optical ID (LDR1_opt_ID_ra)degpos.eq.ranullableDEodeg? Declination of LDR1 optical ID (LDR1_opt_ID_dec)degpos.eq.decnullableFIRSTFIRST source (Cat. VIII/92) matched with LDR1 (Cat. J/A+A/598/A104) (JHHMMSS.s+DDMMSS) (FIRST_Name)meta.idcharL1400? Total power at 1.4GHz (L_1400)W/Hzphys.luminosity;em.radio.750-1500MHzdoublenullablee_L1400? Error in total power at 1.4GHz (e_L_1400)W/Hzstat.errordoublenullableFIRSTLLS? FIRST projected largest linear size (FIRST_LLS)kpcphys.size.diameterdoublenullableSloanDisplay the online SDSS data for this sourcemeta.ref.urlchar_RAPosition from SDSS name (right ascension part)degpos.eq.ra;meta.mainindexed_DEPosition from SDSS name (declination part)degpos.eq.dec;meta.mainindexed