2MASS, SDSS and FIRST fluxes of QSOs J/MNRAS/383/1513 ivo://CDS.VizieR/J/MNRAS/383/1513 doi:10.26093/cds/vizier.73831513 CDS Labita M. Treves A. Falomo R. 2024-07-05T20:16:01Z 2008-06-28T16:34:22Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars infrared-photometry visible-astronomy sloan-photometry redshifted Starting from a sample of Sloan Digital Sky Survey quasars appearing also in the Two-Micron All-Sky Survey, we study the continuum properties of ~1000 objects observed in eight bands, from near-infrared to ultraviolet. We construct the mean spectral energy distribution (SED) and compare and contrast the continua of radio-loud and radio-quiet quasar (RLQ and RQQ, respectively) objects. The SEDs of the two populations are significantly different, in the sense that RLQs are redder with power-law spectral indices <alpha_RLQ_>=0.55+/-0.04 and <alpha_RQQ_>=0.31+/-0.01 in the spectral range between 10^14.5^ and 10^15.35^Hz. This difference is discussed in terms of different extinctions, different disc temperatures, or slopes of the non-thermal component. 2008MNRAS.383.1513L https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/383/1513 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003) http://www.sdss.org : SDSS Home Page https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/383/1513 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/383/1513 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/383/1513 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/383/1513 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/383/1513 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/383/1513 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/383/1513/table1 (Monochromatic fluxes are derived from SDSS, 2MASS and FIRST and corrected for Galactic extinction) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/383/1513/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/383/1513/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/383/1513/table1? GET text/xml+votable 180.0 50000 true 0.2957189 -10.8798519 0.005555555555555556 6/4100 4103 4105 4107 4111 4114 4117 4123 4125 4127 4134 4139 4145 4149-4150 4163 4165 4184 4224 4775 4789-4790 4793 4795-4797 4837 4843-4844 4850-4851 4856 4859-4860 5034-5036 5039 5042 5044-5045 5070 5080 5082 5087 5089 5091 5103-5104 5113 5117 5119 5606 5609 5611 5617 5620 5630 5684-5685 5722 5735 5741-5742 5751-5753 5764-5765 5767 5771 5777 5780 5784 5787 5790-5791 5795 5799 5807 5809 5812 5817 5820 5822 5825 5828 5835 5841 5849-5850 5854 5870 5878-5880 5884 5887 5903 5913-5914 5926-5927 5933 5935 5937 5950 5952 5954 5957 5969 5974 5983-5984 5994 5998 6000 6008 6015 6021 6025 6028 6037-6038 6041-6042 6063 6066-6067 6070 6076 6083 6087 6089 6097 6104 6117 6120 6128 6131 6137 6161 6165 6168 6196 6209 6214 6220 6223-6224 6228-6229 6234 6236 6239 6242 6252 6264 6266 6269 6389 6391 6411 6418-6419 6421 6427-6428 6432 6435-6436 6443 6449-6450 6453 6457 6465-6467 6471 6473 6488 6490 6493 6499 6507 6512 6515 6519 6522 6532 6552 6559 6561 6565 6576 6595 6601 6604 6606 6617 6619 6622-6623 7172 7182 7184 7188 7195 7198 7208 7211 7216 7223 7232 7237-7238 7240 7244 7248 7250-7252 7254 7256-7257 7259 7262-7263 7266 7269 7283 7290-7293 7298 7301 7304 7309 7311 7316 7325 7362 7377 7380 7384 7424 7426-7428 7433 7446 7448 7458-7460 7464 7473 7476 7484 7492 7495 7500 7552 7559 7568 8197 8201 8208 8210 8216 8226 9243 9259 9272 9295 9300 9307 9309 9317-9318 9326 9332-9333 9352 9377 9391 9409 9411 9421-9422 9436-9437 9441 9444-9446 9454-9455 9457 9459-9460 9463-9464 9467 9470 9482-9483 9505 9513 9606-9607 9609 9614 9626 9633 9641-9644 9647 9733 9760 9775 9783 9793 9796-9798 9800 9805-9806 9809 9812-9814 9817 9826 9830 9844 9855 9872 9877 9891-9892 9910-9912 9919 9929-9931 9947-9948 9953-9954 9958 9978 9985 9987 9989 10017 10024 10067 10074 10095 10121 10123 10182 10188 10193 10200 10212 10214 10217 10219 10222 10571 10581 10583 10596 10614 10643 10649 10654 10673 10685 10687-10688 10706 10721-10722 10728 10955 10976 10994-10995 10997 10999 11007 11031 11033-11034 11056 11058 11065-11066 11069 11107 11110-11112 11120 11122-11123 11129 11132-11133 11149 11163-11164 11177 11184 11203 11214 11216 11224 11231 11250 11252 11258 11285-11286 11290-11292 11300 11317 11320 11328 11332 11337 11340-11341 11347 11351 11358 11370 11387 11395-11396 11406-11407 11409 11414 11418 11423 11428-11429 11438-11440 11443 11448 11456 11459 11461 11464 11470 11480-11481 11483 11488 11491 11493 11498 11500 11502 11505 11514 11588 11777 11785-11786 11790 11792 11796 11798-11800 11813 11825 11850 11914 16894 17213 17233 17236 17243-17244 17253-17254 17314 17316-17318 17321-17324 17495 17510 17522 17563 17565 17574-17575 17577 17579 17749-17750 17767 17778 17807 17813 17815-17816 17827 17829 17831 17834 17997 18001 18003-18005 18008 18018 18020 18022-18024 18028-18030 18063 18065 18067 18070 18113 18176 18178 18520 18536 18544 18552 18599 18605 18610 18624-18625 18627-18628 18765 18770 18772 18774 18776-18777 18781 18790 18796 18834 18845 18852 18856 18859 18865 18880 18948 18951 19006 19026 19029 19037 19045-19046 19050 19087 19099 19101 19109 21879 21885-21886 23210 23212 23214 25589 25591 25853 25912-25913 25932 25934 25940 25955 25962 25976 25978 25983 25986 25998-25999 26004 26010 26012 26014 26020 26036-26037 26048 26058 26072-26074 26076 26082 26085 26088 26091 26167-26169 26175 26182 26201 26206 26217 26220 26223-26225 26230 26235 26245 26248 26252 26254 26256 26258 26261 26263 26266 26276-26277 26290 26298 26313 26323 26325 26331-26332 26336-26337 26342 26348 26372 26375 26382 26387 26389 26392 26396 26406-26407 26416 26877 26945 26947 26951 26956 26965-26966 26975 26983 26990 26992 27007 27021 27025 27029-27030 27036-27037 27041 27059 27064 27074 27084-27085 27090-27091 27096-27097 27109-27110 27114-27115 27135 27220 27229 27235 27248 27250-27251 27253-27254 27257 27262-27263 27290 27293 27302 27305 27310 27312-27313 27328 27335 27338 27342 27349 27360 27364 27371 27376 27379 27391 27402 27406 27409 27425 27444 27448-27449 27453 27467 27479 27520 27522-27523 27539 27560 27650-27651 27653 27662 27667 27671 27685 27711 27731-27732 27740 27751 27753 27755 27762 27806 27814 27821 27826 31289 31291 31331 31333 31375 31378 31392 31399 31406 31435 31456 32502 32509 32511 32682 36764 36767 36783 36786 36803 36810 36863 45046 45048 49009 49014-49016 49019 49091 49100 49106 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/383/1513?format=ascii Optical Infrared default J/MNRAS/383/1513/table1 Monochromatic fluxes are derived from SDSS, 2MASS and FIRST and corrected for Galactic extinction F20cm FIRST 20cm flux Jy phot.flux.density;em.radio.750-1500MHz double FH 2MASS H band flux Jy phot.flux.density;em.IR.H double FK 2MASS K band flux Jy phot.mag;em.IR.K double Fz SDSS z band flux Jy phot.mag;em.opt.I double FJ 2MASS J band flux Jy phot.flux;em.IR.J double recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int z Redshift src.redshift float Fu SDSS u band flux Jy phot.mag;em.opt.U double Fg SDSS g band flux Jy phot.mag;em.opt.B double Fr SDSS r band flux Jy phot.mag;em.opt.R double Fi SDSS i band flux Jy phot.mag;em.opt.I double l_F20cm Limit flag on F20cm meta.code.error char l_R(r-o) Limit flag on R(r-o) meta.code.error char R(r-o) Ratio between radio and optical fluxes (1) phot.flux;arith.ratio float SDSS Display the SDSS data meta.ref.url char 2MASS Display the 2MASS data meta.ref.url char FIRST Display the FIRST data (20cm) meta.ref.url char _RA Simbad column added by the CDS deg pos.eq.ra;meta.main _DE Simbad column added by the CDS deg pos.eq.dec;meta.main