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Appendix A: Astrometry and photometry data of the visual range measurements

Appendix B: Input fluxes for thermal modelling

We calculate the colour corrected flux from the measured flux using the C_λ colour correction factors and the r_corr,λ flux correction factors. The colour correction factors of the Herschel data are calculated using the actual spectral energy distribution of the target according to Müller et al. (2011), while in the case of WISE data the correction factors are taken from Cutri et al. (2012). Then the corrected flux is: (B.1)and the uncertainty of the corrected flux is: (B.2)

where δC_λ is the uncertainty of the colour correction factor. The final “input flux”, used for the modelling of the thermal emission is the colour corrected flux, F_λ,i = F_λ,cc. However, the uncertainties of the absolute calibration have to be considered in the final “input” uncertainties: (B.3)where r_cal,λ is the calibration uncertainty factor that is given as a certain fraction of the measured point source flux for all bands of the WISE and Herschel/PACS instruments. The actual values of all the factors mentioned above are summarized in Table 3, also listing the final input fluxes used in the thermal emission modelling.

© ESO, 2013