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• W3100843144 abstract "Near-IR photometry for 20 radio-loud z>3 quasars, 16 of which are radio- selected, are presented. These data sample the rest-frame optical/UV continuum, which is commonly interpreted as emission from an accretion disk. In a previous study, we compared the rest-frame optical/UV continuum shapes of 15 optically bright (V 3 quasars with those of 27 low redshift (z~0.1) ones that were matched to the high redshift sample in evolved luminosity (i.e. having luminosities ranging from 1-7 times the characteristic luminosity, L*, where L*~(1+z)^{~3}) to look for signs of evolution in the central engines. We found the continuum shapes at z~0.1 and z>3 similar, consistent with no significant change in the ratio mdot/M, where mdot is the accretion rate with respect to the Eddington rate and M is the black hole mass. This study expands our earlier high redshift sample to lower luminosity, away from extreme objects and towards a luminosity overlap with lower redshift samples. The distribution of rest-frame optical/UV continuum shapes for this fainter sample is broader, extending further to the red than that of the brighter z>3 one. Three quasars from this fainter sample, two radio-selected and one optically-selected, have optical continuum slopes alpha<-1 (F_{nu}~nu^{alpha}). The optically-selected one, LBQS0056+0125, appears to be reddened by dust along the line of sight or in the host galaxy, whereas the radio-selected ones, PKS2215+02 and TXS2358+189, could derive their red continua from the contribution of a relatively strong synchrotron component to the rest-frame optical. These objects may represent a bridge to a population of very red high redshift quasars to which ongoing or future near-IR, optical and deep X-ray surveys will be sensitive." @default.
• W3100843144 created "2020-11-23" @default.
• W3100843144 creator A5042491527 @default.
• W3100843144 date "2004-02-01" @default.
• W3100843144 modified "2023-10-14" @default.
• W3100843144 title "Rest-frame optical continua ofL∼L*,z> 3 quasars: probing the faint end of the high-zquasar luminosity function" @default.
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• W3100843144 doi "https://doi.org/10.1111/j.1365-2966.2004.07386.x" @default.
• W3100843144 hasPublicationYear "2004" @default.
• W3100843144 type Work @default.
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• W3100843144 hasAuthorship W3100843144A5042491527 @default.

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