Dust temperture and the submillimetre-radio flux density ratio as a redshift indicator for distant galaxies

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dc.creatorBlain, Andrew W.
dc.date1999-06-28
dc.date1999-08-13
dc.date.accessioned2026-07-07T10:51:31Z
dc.date.available2026-07-07T10:51:31Z
dc.descriptionIt is difficult to identify the distant galaxies selected in existing submillimetre-wave surveys, because their positions are known at best to only several arcseconds. Centimetre-wave VLA observations are required in order to determine positions to subarcsecond accuracy, and so to allow reliable optical identifications to be made. Carilli & Yun pointed out that the ratio of the radio to submillimetre-wave flux densities provides a redshift indicator for dusty star-forming galaxies, when compared with the tight correlation between the far-infrared and radio flux densities observed in low-redshift galaxies. This method does provide a useful, albeit imprecise, indication of the distance to a submillimetre-selected galaxy. Unfortunately, it does not provide an unequivocal redshift estimate, as the degeneracy between the effects of increasing the redshift of a galaxy and decreasing its dust temperature is not broken.
dc.description6 pages, 4 figures, to appear in MNRAS. Minor changes to agree with final proof version
dc.identifierhttps://arxiv.org/abs/astro-ph/9906438
dc.identifierhttp://arxiv.org/abs/astro-ph/9906438
dc.identifierMon.Not.Roy.Astron.Soc.309:955-960,1999
dc.identifierdoi:10.1046/j.1365-8711.1999.02916.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184848
dc.subjectAstrophysics
dc.titleDust temperture and the submillimetre-radio flux density ratio as a redshift indicator for distant galaxies
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