Far IR spectral energy distribution of IC 63 and IC 59 compared to that of the Horsehead PDR (G0 = 100 and Tdust = 23.3 K for a spectral index β = 0.99; Ochsendorf & Tielens 2015), and NGC7023 eastern (E) and north (N) PDRs (G0 = 250 and 2600, and Tdust ~ 20 and 30 K, respectively assuming β = 2; Köhler et al. 2014). Also shown is the SED derived for the cirrus cloud in the diffuse ISM (Compiègne et al. 2010). For IC 63 we found G0 = 150 and Tdust ~ 30 K, while for IC 59 we derive values of G0 = 25 and Tdust = 27 K.
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