Table 1
Summary of the radiative transfer models.
| Model name | Description | N(H2) (1) | J(1) | H(1) | KS (1) | τJ,em (1) | τ250 (1) | KISRF | Tcore (2) |
|---|---|---|---|---|---|---|---|---|---|
| (cm−2) | (MJy sr−1) | (MJy sr−1) | (MJy sr−1) | (× 10−3) | (K) | ||||
| OBS | Values derived from observations | 4.51 × 1021 | 0.08 | 0.15 | 0.10 | 1.50 | 2.56 | – | 7.5 |
| COM models | |||||||||
| Default | Compiègne et al. (2011) | 1.59 × 1022 | 0.055 | 0.047 | 0.054 | 5.80 | 2.67 | 0.447 | 9.34 |
| Scaled2 | Emissivity of λ > 60 μm scaled by 2 | 8.31 × 1021 | 0.074 | 0.057 | 0.053 | 3.03 | 2.80 | 0.515 | 10.31 |
| Scaled4 | Emissivity of λ > 60 μm scaled by 4 | 4.26 × 1021 | 0.082 | 0.051 | 0.040 | 1.55 | 2.87 | 0.663 | 10.66 |
| LG | Included grains up to a size of 5 μm | 1.62 × 1022 | 0.112 | 0.111 | 0.128 | 4.50 | 2.93 | 0.462 | 10.36 |
| LGM | Mass of large grains × 2, PAH mass × 0.5 | 9.21 × 1021 | 0.111 | 0.106 | 0.131 | 5.00 | 3.21 | 0.440 | 10.24 |
| Models with dust evolution | |||||||||
| SIGMA | Two components, diffuse and dense components(3) | 9.58 × 1021 | 0.187 | 0.212 | 0.220 | 3.42 | 3.73 | 0.574 | 10.58 |
| THEMIS | Dust model using the THEMIS framework(4) | 1.44 × 1022 | 0.082 | 0.127 | 0.173 | 1.05 | 2.74 | 0.471 | 7.61 |
| DDust | Two dust components, Default and LG | 1.82 × 1022 | 0.079 | 0.085 | 0.108 | 14.38 | 3.53 | 0.745 | 9.31 |
Notes. Columns are: the column densities, NIR intensities, J band optical depth, 250 μm optical depth, radiation field scaling, and the core temperature. (1)The column density, background subtracted intensity, and the optical depths of J band and 250 μm band have been computed as average values over 5 × 5 map pixels centred on point 1 (see left panel of Fig. 11). (2) The value derived from observationsbased on the N2H+ line observations by Lin et al. (2020). The modelled values are computed as averages over 103 cells centred at the core. (3)The diffuse component is the Default model and the dense component is built with SIGMA (Lefèvre et al., in prep.). (4) For details see Köhler et al. (2015); Ysard et al. (2016).
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