Fig. 2
Above: Spitzer IRAC [3.6–4.5] vs. [5.8–8.0] colour–colour figure derived from the Luhman et al. (2008) photometry. Below: Spitzer IRAC-MIPS [3.6–4.5] vs. [8.0–24] colour–colour figure of the Luhman et al. (2008) YSOs. Grey dots indicate the Luhman et al. (2008) identified YSOs. The black symbols indicate those YSOs detected with Herschel. The group of YSOs clustered around [0,0] in both diagrams are the class III sources.
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