Covering factor of warm dust in quasars J/MNRAS/430/3445 ivo://CDS.VizieR/J/MNRAS/430/3445 doi:10.26093/cds/vizier.74303445 CDS Ma X.-C. Wang T.-G. 2024-07-21T20:14:16Z 2014-06-23T12:43:00Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars ultraviolet-astronomy galaxies infrared-sources By combining newly obtained infrared photometric data from the All-Sky Data Release of the Wide-field Infrared Survey Explorer with spectroscopic data from the Seventh Data Release of the Sloan Digital Sky Survey, we study the covering factor of warm dust (CFWD) for a large quasar sample, as well as the relations between CFWD and other physical parameters of quasars. We find a strong correlation between the flux ratio in the mid-infrared to near-ultraviolet and the slope of the near-ultraviolet spectra, which is interpreted as a dust extinction effect. After correcting for dust extinction utilizing the above correlation, we examine the relations between CFWD and active galactic nucleus properties: bolometric luminosity (L_bol_), black hole mass (M_BH_) and Eddington ratio (L/L_Edd_). We confirm the anticorrelation between CFWD and L_bol_. Further, we find that CFWD is anticorrelated with M_BH_ but is independent of L/L_Edd_. Radio-loud quasars are found to follow the same correlations as radio-quiet quasars. Monte Carlo simulations show that the anisotropy of the UV-optical continuum of the accretion disc can have a significant effect, but is not likely to dominate the CFWD-L_bol_ correlation. 2013MNRAS.430.3445M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/430/3445 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/328 : AllWISE Data Release (Cutri+ 2013) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) VIII/90 : The FIRST Survey Catalog, Version 12Feb16 (Becker+ 2012) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/430/3445 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/430/3445 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/430/3445 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/430/3445 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/430/3445 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/430/3445 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/430/3445/tablea1 (Primary data for all 16275 sources in our sample) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/430/3445/tablea1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/430/3445/tablea1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/430/3445/tablea1? 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20287 20452 20466 20474 21771 21843-21844 21849-21850 21852 21854-21855 21862 21866 21868 21885 21952 21959 21964-21966 21969 21971-21973 21975-21976 21981-21983 21991 21998 22001-22003 22008 22010-22013 22353 22355 22361 22363-22364 22366-22367 22384 22388 22390-22391 22396-22397 22399 22711 22714 22716-22718 22762 23043 23045 23048-23049 23060-23062 23065 23076 23099 23101-23104 23138 23144-23146 23181-23183 23186-23187 23196-23198 23201-23203 23212-23214 23216-23218 23232-23233 23272 23341 24251 25312 25335 25567 25581 25583 25585 25588-25589 25593-25595 25598-25599 25823 25838-25839 25841 25843 25846-25848 25850-25851 25853-25855 25887 25901-25902 25907-25909 25911 25913 25915 25928-25929 25931 25934-25935 25940-25941 25943 25945 25947 25956-25957 25959 25969-25971 25980-25982 25985 25987-25988 25991 26001-26002 26010-26012 26014 26016 26018-26019 26025-26026 26029-26032 26034-26037 26045-26047 26053-26057 26072 26074-26075 26078-26081 26084-26085 26087-26088 26090-26091 26096 26099 26101-26103 26113 26115 26157-26159 26163 26168 26173-26175 26177-26182 26184 26188-26190 26196 26201 26209-26212 26217-26219 26224-26225 26227 26242-26243 26248 26250-26253 26256 26258 26260 26262-26263 26265-26267 26269-26271 26273 26275 26281-26283 26285-26286 26289-26292 26294-26297 26299 26304-26306 26316 26319-26320 26322-26323 26325-26328 26330-26331 26333-26334 26340 26343-26346 26349 26351 26354-26355 26357-26361 26363-26366 26369-26370 26372 26374-26375 26377-26379 26384-26385 26387-26390 26396-26397 26399 26401 26403 26408 26410-26413 26416 26418-26420 26422-26423 26429-26431 26433 26435 26438-26439 26441-26443 26448 26451 26453 26457 26459 26473-26475 26480 26482 26485-26488 26490-26491 26498-26499 26501-26502 26505 26507 26515 26517-26520 26522-26523 26526-26527 26532-26533 26537-26538 26546-26550 26553-26555 26557-26560 26562-26563 26571-26572 26574-26575 26578-26579 26581-26583 26592-26594 26597 26600 26602-26606 26612-26613 26615 26617 26619-26621 26878 26909 26911 26933 26942-26943 26945 26947-26948 26950 26965-26970 26976 26978-26981 26983 26985-26988 26990-26991 26997-26999 27001-27003 27021 27023 27025 27027 27034-27037 27039 27041-27043 27045-27046 27048-27050 27053-27054 27065-27070 27074-27076 27078 27084-27086 27088 27090 27092-27093 27095 27097-27099 27101-27103 27105-27106 27108-27110 27117-27119 27121-27123 27126-27128 27131 27133-27135 27217 27219 27225 27227 27235 27240-27241 27277 27279 27282-27283 27288-27290 27299 27301-27303 27312 27314-27317 27319 27329-27334 27336-27337 27339 27344-27345 27347 27356 27358-27359 27381 27383-27386 27392 27394-27395 27400-27402 27405-27406 27421-27422 27437-27439 27441-27442 27444-27445 27447 27449-27452 27455-27457 27472 27474-27477 27479-27480 27482-27483 27487-27489 27491 27520 27522 27529-27530 27536 27539 27541 27543 27545-27547 27550-27551 27564-27566 27568 27570-27571 27580-27581 27583-27584 27586-27587 27589 27591 27597-27599 27604-27606 27617-27618 27621-27622 27625 27627 27629-27631 27633-27637 27639 27644 27646-27649 27651 27653-27654 27672-27674 27677-27678 27684-27686 27690 27697 27708-27709 27711 27721-27722 27724-27725 27727-27730 27732-27733 27739 27745-27746 27754-27755 27758-27759 27761-27762 27764 27766 27773 27775-27778 27781-27783 27789-27794 27796 27798-27799 27801 27803 27810-27812 27814-27815 27820-27821 27823 27825-27830 27832 27834-27835 27842 27849 27852-27854 27864 27866-27867 27869-27874 27885-27887 27889 27891 27893 27895 27897-27898 27900-27901 27903 27908-27909 27911-27912 27914 27920 27922-27923 27925-27930 27932-27934 27936-27937 27939 27943 27945 27947 27952-27953 27955 27968-27970 27973 27976-27977 27979 27982-27986 28005-28007 28016 28018-28020 28022 28025-28027 28036-28037 28039 28041-28042 28045-28047 28052-28054 28056-28058 28060-28061 28063 28072-28074 28076-28077 28079 28081 28088 28093 28095 28097-28101 28103 28105-28107 28112 28114-28115 28121 28123-28126 28128-28129 28131-28133 28135 28138-28139 28144 28146-28147 28149-28151 28160 28162-28163 28166 28174 28176-28178 28180-28182 28189-28191 28193-28198 28200 28213-28215 28220 28222-28223 28232 28234-28237 28239 28245-28246 28248 28250-28252 28254-28256 28258-28260 28262-28263 28276 28278-28280 28282-28283 28285-28288 28291 28297-28299 28301-28305 28307 28309-28311 28320 28322-28323 28328 28330-28331 28334-28335 28340-28342 28349-28350 28356 28358-28359 28372 28374-28377 28379 28393-28394 28396-28398 28405-28409 28413-28415 28427 28432 28434 28436-28437 28440 28442 28446-28450 28457-28459 28464-28466 28472-28474 28476-28478 28483-28485 28488-28489 28491-28493 28495-28497 28499-28500 28502-28504 28506-28508 28510-28511 28513-28514 28516-28517 28519 28521 28536-28538 28540-28541 28543 28545-28548 28550-28551 28558-28562 28568 28570-28571 28588 28590-28591 28605-28608 28611-28612 28614-28615 28621-28622 28624 28627 28629-28631 28633-28635 28637-28641 28643-28645 28647 28649 28655-28656 28658 28660 28663-28665 28667 30031 30033-30035 30044-30046 30064-30065 30973-30975 31144 31289 31291-31292 31295 31313-31314 31317-31319 31324-31326 31329 31331 31336 31338-31340 31342 31344 31346 31354-31355 31357-31358 31365-31367 31369-31371 31373-31376 31378-31382 31391 31393 31395 31404 31407 31409-31413 31416-31417 31419 31430-31431 31436-31438 31440-31441 31443 31456 31459 31461 31466 31468 31470-31474 31482-31484 31489-31490 31529-31530 31533-31534 31544 31546-31547 31551 31611 31616-31617 31619 31624-31625 31627 31632-31633 31636-31638 31640-31641 31643-31644 31646 31656-31657 31659-31661 31663 31665 31667-31668 31670-31671 31673-31674 31689-31691 31697 31710 31720-31721 31724 31726-31727 31732-31733 31881 31886 32180 32391 32397 32399 32407-32410 32420 32422-32423 32430-32434 32436 32438-32439 32444-32446 32462 32486 32492 32495 32556 32558 32674 32680 32682-32684 32697 36717-36719 36721 36723 36725-36728 36730 36759 36761-36763 36765 36767 36772 36774-36776 36778-36779 36784-36786 36789-36790 36792-36794 36808-36810 36812 36816-36817 36861-36863 40959 45039 45043-45046 45049-45054 48983 48989 48991 49007 49009-49013 49015-49016 49018-49022 49084 49086-49087 49093-49095 49098 49100-49101 49104 49120 49122-49124 49128 49130 49149-49151 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/430/3445?format=ascii UV Infrared default J/MNRAS/430/3445/tablea1 Primary data for all 16275 sources in our sample FMIR MIR flux (erg/cm^2^/s/{AA}) cW.m**-2.nm**-1 phot.flux;em.IR.MIR double CFWD [0/2] Covering factor stat.fit.param float recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS SDSS name (HHMMSS.ss+DDMMSS.s, Eq. J2000) meta.id;meta.main char z Redshift src.redshift float alpha [-3.1/0] NUV spectral slope {alpha}: F_{lambda}_{prop.to}{lambda}^{alpha}^ spect.index float FNUV NUV flux (erg/cm^2^/s/{AA}) cW.m**-2.nm**-1 phot.flux;em.UV.200-300nm double logLbol [44.6/47.5] Bolometric luminosity (erg/s) log(1e-07W) phys.luminosity float logMbh ? Black hole mass mass log(solMass) phys.mass float nullable FS [0/1] Flag for non-primary source (1) meta.code int F1 [-1/2] FIRST flag (2) meta.code int Sloan Display the SDSS data for this quasar meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char NED Simbad column added by the CDS meta.ref char _RA Position from SDSS name (right ascension part) deg pos.eq.ra;meta.main _DE Position from SDSS name (declination part) deg pos.eq.dec;meta.main