ISO Observations of the dusty quasar BR1202-0725
Astrophysics
2009-11-07 v1
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.
Keywords
Cite
@article{arxiv.astro-ph/0109033,
title = {ISO Observations of the dusty quasar BR1202-0725},
author = {K. J. Leech and L. Metcalfe and B. Altieri},
journal= {arXiv preprint arXiv:astro-ph/0109033},
year = {2009}
}
Comments
5 pages, one colour figure