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Paper: A Tentative Detection of [CII] Line Emission in the z = 4.7 QSO BR1202−0725
Volume: 375, From Z-Machines to ALMA: (Sub)Millimeter Spectroscopy of Galaxies
Page: 246
Authors: Iono, D.; Yun, M.S.; Elvis, M.; Peck, A.B.; Ho, P.T.P.; Wilner, D.J.; Hunter, T.R.; Matsushita, S.; Muller, S.
Abstract: Our new SMA ∼ 3″ resolution 900 μm image of the z = 4.7 QSO BR1202−0725 shows two submillimeter continuum components, consistent with previously published mm images. We further tentatively detect the redshifted [CII] line emission from the northern component BR1202N. The derived [CII]-to-FIR luminosity ratio (0.03%) is comparable to the ratios found in local ULIRGs. In addition, by analyzing archival Chandra data, we detect X-ray emission in both submm components. We conclude that BR1202−0725 is likely a pair of AGN host galaxies at z = 4.7, with both galaxies forming stars at exceedingly high rates.
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