Open Access
Table A.3
Best-fit model parameters obtained for channel maps of the disc of AS 209.
| AS 209(121.0 pc) | ||||||
|---|---|---|---|---|---|---|
| Attribute | Parameter | Unit | 12CO | 13CO | C18O | |
| Orientation | i | [°] | −37.3 [−35.0] | −33.5 [−35.0] | −32.9 [−35.0] | |
| PA | [°] | 85.6 [85.2] | 85.8 [85.9] | 85.5 [85.4] | ||
| xc | [au] | 0.0 [0.6] | −1.5 [−0.7] | −1.3 [−1.8] | ||
| yc | [au] | −1.8 [−1.6] | −2.9 [−0.3] | −3.7 [−6.7] | ||
| Velocity | M* | [M⊙] | 1.14 [1.27] | 1.35 [1.26] | 1.41 [1.28] | |
| υsys | [km s−1] | 4.64 [4.63] | 4.66 [4.66] | 4.66 [4.66] | ||
| Upper surface | z0 | [au] | 36.7 | 10.2 | 7.0 | |
| p | [–] | 3.20 | 1.57 | 3.56 | ||
| Rt | [au] | 105.9 | 190.8 | 153.9 | ||
| q | [–] | 1.30 | 7.04 | 7.05 | ||
| Lower surface | z0 | [au] | 7.4 | 25.3 | -- | |
| p | [–] | 2.03 | 3.63 | -- | ||
| Rt | [au] | 322.4 | 96.0 | -- | ||
| q | [–] | 7.37 | 1.78 | -- | ||
| Peak intensity | I0 | [Jy px−1] | 0.072 | 0.132 | 0.004 | |
| p | [–] | −1.84 | −1.41 | −1.32 | ||
| q | [–] | 0.84 | 1.31 | 0.39 | ||
| Line width | Lw | [km s−1] | 0.33 | 0.17 | 0.27 | |
| p | [–] | −0.42 | −0.24 | 1.83 | ||
| q | [–] | −0.11 | −0.25 | 0.38 | ||
| Line slope | Ls | [–] | 1.71 | 1.46 | 0.82 | |
| p | [–] | 0.14 | 0.48 | 1.52 | ||
Notes. Parameters in brackets result from fixing inclination to the value found for the millimetre continuum in Huang et al. (2018a).
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