AzTEC 1.1 mm images of 16 radio galaxies at 0.5<z<5.2 and a quasar at z=6.3
A. Humphrey, M. Zeballos, I. Aretxaga, D.H. Hughes, M.S. Yun, R., Cybulski, Grant W. Wilson, J. Austermann, H. Ezawa, R. Kawabe, K. Kohno, T., Perera, K. Scott, D. S\'anchez-Arguelles, R. Gutermuth

TL;DR
This study uses 1.1 mm observations to identify luminous star-forming galaxies associated with high-redshift radio galaxies and quasars, revealing their properties and potential as beacons for distant, dusty starbursts.
Contribution
It provides the first extensive millimetre imaging of high-z radio galaxies, linking their properties with star formation and mid-infrared characteristics, and highlights their role in finding luminous high-z galaxies.
Findings
Probable millimetre counterparts detected for 11 of 16 active galaxies.
Star formation rates range from <200 to ~1300 M/yr in detected sources.
Radio galaxy 1.1 mm flux density is anticorrelated with radio source size.
Abstract
We present 1.1 mm observations for a sample of 16 powerful radio galaxies at 0.5<z<5.2 and a radio quiet quasar at z=6.3, obtained using the AzTEC bolometer array mounted on the ASTE or the JCMT. This paper more than doubles the number of high-z radio galaxies imaged at millimetre/sub-millimetre wavelengths. We detect probable millimetre-wave counterparts for 11 of the active galaxies. The 6 active galaxies which do not have a probable millimetre counterpart in our images nevertheless have one or more likely associated millimetric source. Thus, we conclude that powerful (radio-loud) active galaxies at high-z are beacons for finding luminous millimetre/sub-millimetre galaxies at high-z. The flux densities of our AzTEC counterparts imply star formation rates ranging from <200 to ~1300 M./yr. In addition, we find that for the radio galaxoes the 1.1 mm flux density is anticorrelated with…
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Radio Astronomy Observations and Technology · Advanced Adaptive Filtering Techniques
