Table B.1
Model comparisons between a flat (
) and an ascending (
) longitude-velocity curve for the four different ROI sets.
 |
 |
Δχ2 | σ | vbulk | ξ511 | |
|---|---|---|---|---|---|---|
| L1 | 5.4 (4) | 2.7 (3) | 2.7 | 1.6 |  |
 |
| L2 | 5.7 (4) | 2.4 (3) | 3.3 | 1.8 |  |
 |
| L3 | 9.0 (5) | 5.7 (4) | 3.3 | 1.8 |  |
 |
| L4 | 7.0 (4) | 3.0 (3) | 4.0 | 2.0 |  |
 |
Notes.The χ2 -values have been determined by a fit to the l-v-diagram, Fig. 4, with ν degrees of freedom. By comparing the fitted values in a χ2-test (Δχ2 -values), the significancesin units of σ are derived. In the last two columns, the best fit parameters of an ascending curve are provided, with vbulk as the intersect at l = 0° in units of km s−1, and ξ511 as the velocity gradient in units of km s−1 deg−1.
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