Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.9418s&link_type=abstract
American Astronomical Society Meeting 205, #94.18; Bulletin of the American Astronomical Society, Vol. 36, p.1498
Astronomy and Astrophysics
Astronomy
Scientific paper
RDJ030117+002025, with MB -24 mag ( 3.7 1012 Lo) and z=5.5, is the most distant quasar known with MB > -26 mag. MAMBO observations in the 1.2 mm continuum (185 μ m rest frame wavelength) demonstrate that the host galaxy is an ultraluminous FIR source, with LFIR 4x1012 Lo. This is similar to the LFIR observed in high-z quasars from the SDSS, which are over 100 times brighter at optical wavelengths. Here we present near-infrared J- and K-band photometry obtained with NIRC on the Keck telescope, tracing the rest frame UV spectral index of this quasar. These observations providee strong evidence for the scenario in which the faint rest-frame UV luminosity is due to an intrinsically faint AGN, and not due to obscuration at observed optical wavelengths. The implication is that the FIR luminosity is due to a massive starburst at z>5.
Benford Dominic J.
Bertoldi Frank
Djorgovski Stanislav G.
Staguhn Johannes G.
Stern Daniel
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