Open Access

Table A.1

Best-fit model parameters obtained for channel maps of the disc of MWC 480.

MWC 480 (162.0 pc)

Attribute Parameter Unit 12CO 13CO C18O
i [°] −38.6 [−37.0] −37.3 [−37.0] −36.1 [−37.0]
Orientation PA [°] 327.9 [328.2] 327.6 [327.6] 327.6 [327.6]
xc [au] −0.9 [−3.2] −3.7 [−0.6] −3.6 [2.3]
yc [au] −1.8 [0.7] −1.9 [−1.0] 0.1 [−3.2]

Velocity M* [M] 1.97 [2.07] 2.08 [2.12] 2.22 [2.16]
υsys [km s−1] 5.10 [5.10] 5.09 [5.10] 5.09 [5.10]

z0 [au] 52.7 12.4 5.4
Upper surface p [–] 1.65 1.51 2.29
Rt [au] 108.6 307.7 82.9
q [–] 0.55 1.32 1.22
z0 [au] 14.2 8.9 --
Lower surface p [–] 1.11 1.08 --
Rt [au] 803.9 510.9 --

q [–] 2.86 3.60 --

I0 [Jy px−1] 2.61 4.08 0.23
Peak intensity p [–] −2.66 −2.29 −0.63
q [–] 2.16 2.03 0.56
Lw [km s−1] 0.32 0.16 0.29
Line width p [–] −0.29 −0.33 −0.84
q [–] −0.36 −0.45 −0.11
Line slope Ls [–] 1.68 1.50 1.58
p [–] 0.31 0.16 0.09

Notes. Parameters in brackets result from fixing inclination to the value found for the millimetre continuum in Liu et al. (2019).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.