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CO(1-0) in High-Redshift Radio Galaxies using the ATCA

By J. G. Mangum, Minnie Y. Mao, Bjorn Emonts and Ray P. Norris


Abstract. In 2009, the Compact Array Broadband Backend (CABB) was installed on the Australia Telescope Compact Array (ATCA). ATCA/CABB offers 2 × 2 GHz instantaneous bandwidth, mm-capabilities from 16–106 GHz and versatile array configurations, making it an ideal instrument to detect and spatially resolve high-redshift molecular gas. Our team have observed a representative sample of high-redshift radio galaxies using CABB with the intention of detecting CO(1-0) (Emonts et al. 2011a,b). Here I summarise ATCA’s upgraded spectral line capabilities and present and discuss our work on molecular gas in high-redshift radio galaxies, including the detection of CO(1-0) in four z ∼ 2 radio galaxies. 1

Year: 2013
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