The SCUBA HAlf Degree Extragalactic Survey (SHADES) - III. I(15)

Determining an accurate position for a submm galaxy (SMG) is the crucial step that enables us to move from the basic properties of an SMG sample - source counts and 2-D clustering - to an assessment of their detailed, multi-wavelength properties, their con

Identi cationofsubmillimetregalaxiesintheSHADESSourceCatalogue

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Figure9.S24µm/S8µmversusS8µm/S4.5µmcolour-colourdiagramforafaint24-µm-selectedsampleof4,457galaxies(dots)with4.5-and8.0-µmdetections.Robustlyidenti edSMGsareplottedas lledcirclesandlesssecurelyidenti edSMGsasopencircles.Arepresentativeerrorbarisshown,topright.TheredshifttracksofArp220,Mrk231andNGC6240areshown(adoptingSEDsfromRigopoulouetal.1999andSpoonetal.2004),withsquarestoindicateredshift.Hatchedregionsindicateregionsofcolour-colourspacewhereonemightexpectto ndthemostdistantSMGs.

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