B1933+503, a dusty radio quasar at z>2: implications for blank field sub-mm surveys?

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dc.creatorChapman, Scott C.
dc.creatorScott, Douglas
dc.creatorLewis, Geraint F.
dc.creatorBorys, Colin
dc.creatorFahlman, Gregory G.
dc.date1998-10-28
dc.date1998-11-12
dc.date.accessioned2026-07-07T02:28:46Z
dc.date.available2026-07-07T02:28:46Z
dc.descriptionWe present a detailed mm-wave and optical study of the gravitational lens system B1933+503, discovered by Sykes et al.(1998) in the radio. This object is probably the most complex lens system known, with 10 lensed components within a radius of one arcsecond. It is potentially important as a probe of the Hubble constant, although no optical counterpart has thus far been observed down to I=24.2. We have obtained new sub-millimetre detections at 450, 850 and 1350 microns. We have also constrained the possible dust emission from the proposed foreground lensing galaxy using a K-band adaptive optics image and CO(5-4) measurements. A lensing model is constructed, taking the foreground elliptical galaxy at z=0.755 as the lensing mass. From this we derive a scenario from which to model the sub-millimetre emission. Several arguments then point to the source in the B1933+503 system lying above a redshift of 2. We speculate that unlensed relatives of this source may constitute a sizable fraction of the 850 micron source counts.
dc.description9 pages, 8 figures, submitted to MNRAS. Revised version, minor points and references updated
dc.identifierhttps://arxiv.org/abs/astro-ph/9810444
dc.identifierhttp://arxiv.org/abs/astro-ph/9810444
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13200
dc.subjectAstrophysics
dc.titleB1933+503, a dusty radio quasar at z>2: implications for blank field sub-mm surveys?
dc.typetext

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