Very long baseline interferometry detection of an Infrared-Faint Radio Source |
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| Authors: | Ray P Norris Steven Tingay Chris Phillips Enno Middelberg Adam Deller Philip N Appleton |
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| Institution: | CSIRO Australia Telescope National Facility, PO Box 76, Epping NSW 1710, Australia;Swinburne University of Technology, PO Box 218, Hawthorn, Victoria 3122, Australia;Spitzer Science Centre, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA |
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| Abstract: | Infrared-Faint Radio Sources represent a new and unexpected class of object which is bright at radio wavelengths but unusually faint at infrared wavelengths. If, like most mJy radio sources, they were either conventional active or star-forming galaxies in the local Universe, we would expect them to be detectable at infrared wavelengths, and so their non-detection by the Spitzer Space Telescope is surprising. Here, we report the detection of one of these sources using very long baseline interferometry, from which we conclude that the sources are driven by active galactic nuclei. We suggest that these sources are either normal radio-loud quasars at high redshift or abnormally obscured radio galaxies. |
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| Keywords: | techniques: high angular resolution galaxies: active galaxies: evolution galaxies: high-redshift radio continuum: galaxies |
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