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ISO Observations of the dusty quasar BR1202-0725

K. J. Leech·L. Metcalfe·B. Altieri
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Abstract

We present mid- and far-IR photometry of the high-redshift (z=4.69) dusty quasar BR1202-0725. The quasar was detected in the near-IR, at a flux level (0.7+/-0.2 mJy) consistent with an average Radio-Quiet Quasar at it's redshift. Only upper limits for the emission were obtained in the far-IR. These upper limits, when combined with data from ground-based telescopes, are the first direct evidence for a turn-over in the far-IR emission and hence confirm that a black-body dominates the SED at FIR wavelengths. This black-body is most probably cool dust, constrained to have a temperature below 80K, for a beta of 1.5.

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K. J. Leech, L. Metcalfe, B. Altieri. 2001-09-03. ISO Observations of the dusty quasar BR1202-0725. https://doi.org/10.1046/j.1365-8711.2001.04941.x

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