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Sensitive Radio Observations of High Redshift Dusty QSOs

M. S. Yun·C. L. Carilli·R. Kawabe·Y. Tutui·K. Kohno·K. Ohta
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Abstract

We present sensitive radio continuum imaging at 1.4 GHz and 4.9 GHz of seven high redshift QSOs selected for having a 240 GHz continuum detection, which is thought to be thermal dust emission. We detect radio continuum emission from four of the sources: BRI 0952-0115, BR 1202-0725, LBQS 1230+1627B, and BRI 1335-0417. The radio source in BR 1202-0725 is resolved into two components, coincident with the double mm and CO sources. We compare the results at 1.4 GHz and 240 GHz to empirical and semi-analytic spectral models based on star forming galaxies at low redshift. The radio-to-submm spectral energy distribution for BR 1202-0725, LBQS 1230+1627B, and BRI 1335-0417 are consistent with that expected for a massive starburst galaxy, with implied massive star formation rates of order 1000 solar masses per year (without correcting for possible amplification by gravitational lensing). The radio-to-submm spectral energy distribution for BRI 0952-0115 suggests a low-luminosity radio jet source driven by the AGN.

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M. S. Yun, C. L. Carilli, R. Kawabe, Y. Tutui, K. Kohno, K. Ohta. 1999-09-21. Sensitive Radio Observations of High Redshift Dusty QSOs. https://doi.org/10.1086/308164

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