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Table 3
Results of the rotation curve fits for the disk candidates.
| Source | PA(a) | vsys (b) | Line | v200 au | β |  |
|---|---|---|---|---|---|---|
| (°) | (km s−1) | (km s−1) | ||||
| L1448-NB | 29.5 | 4.5 | 13CO (2−1) | 1.35 ± 0.53 | −1.25 ± 1.48 | 0.38 |
| C18O (2−1) | 1.66 ± 0.11 | −1.15 ± 0.20 | 0.05 | |||
| L1448-C | −107 | 5.2 | 13CO (2−1) | 0.88 ± 0.76 | −0.44 ± 0.75 | ...(d) |
| C18O (2−1) | 0.62 ± 0.03 | −0.67 ± 0.09 | 1.11 | |||
| IRAS 2A | 107 | 7.5 | C18O (2−1) | 1.16 ± 0.04 | −0.18 ± 0.09 | ...(d) |
| SVS13B | 77 | 8.4 | C18O (2−1) | 0.42 ± 0.07 | −0.49 ± 0.28 | ...(d) |
| IRAS 4B | −103 | 6.7 | C18O (2−1) | 0.40 ± 0.12 | −2.09 ± 1.78 | ...(d) |
| L1527 | 1.5 | 5.9 | 13CO (2−1) | 0.56 ± 0.04 | −1.11 ± 0.07 | 1.77 |
| C18O (2−1) | 0.25 ± 0.04 | −1.88 ± 0.17 | 3.92 | |||
| SO (56−45) | 0.88 ± 0.10 | -0.57 ± 0.12 | 1.64 | |||
| SerpS-MM18 | 82 | 7.9 | C18O (2−1) | ...(e) | ... | ... |
Notes. (a)Assumed disk major axis position angle for the fit. (b)Assumed disk systemic velocity (in the LSR). (c)Reduced χ2. (d) 
is undefined because the fit is based on only two points. (e)No velocity curve could be fitted (see Appendix C.4).
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