Galaxy counts at 450 and 850 microns

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dc.creatorBlain, Andrew W.
dc.creatorIvison, Rob
dc.creatorKneib, Jean-Paul
dc.creatorSmail, Ian
dc.date1999-08-03
dc.date.accessioned2026-07-07T02:32:43Z
dc.date.available2026-07-07T02:32:43Z
dc.descriptionSurveys of the distant Universe have been made using the SCUBA submillimeter(submm)-wave camera at the JCMT. 450- and 850-micron data is taken simultaneously by SCUBA in the same 5-square-arcmin field. Deep 850-micron counts of high-redshift dusty galaxies have been published; however, at 450 microns both the atmospheric transmission and antenna efficiency are lower, and the atmospheric noise is higher, and so only upper limits to the 450-micron counts have been reported so far. Here we apply the methods used by Blain et al. (1999) to derive deep 850-micron counts from SCUBA images of lensing clusters to the 450-micron images that were obtained in parallel, in which four sources were detected. We present the first 450-micron galaxy count. This analysis has only just become possible because the volume of data and the difficulty of calibration are both greater for the 450-micron array. In light of recent work, in which the identification of two of the galaxies in our sample was clarified, we also update our deep 850-micron counts.
dc.description4 pages, 1 double-panel figure, uses paspconf.sty. To appear in proceedings of `The Hy-redshift Universe', eds A. J. Bunker and W. J. M. van Breugel
dc.identifierhttps://arxiv.org/abs/astro-ph/9908024
dc.identifierhttp://arxiv.org/abs/astro-ph/9908024
dc.identifierin `The Hy-Redshift Universe: galaxy formation and evolution at high redshift', eds. A. J. Bunker & W. J. M. van Breughel, ASP conference vol. 193 (2000). ASP: San Francisco, p. 246-249
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14561
dc.subjectAstrophysics
dc.titleGalaxy counts at 450 and 850 microns
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