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Table 1
Proper motion measurements calculated from the MUSE data and the two X-shooter epochs.
| Knots | xt MUSE 2017 (″) | xt XSh 2013 (″) | xt XSh 2012 (″) | Proper motion (″yr−1) | Vrad MUSE 2017 (kms−1) | Vrad XSh 2012 (km s−1) |
|---|---|---|---|---|---|---|
| Blue Arm | ||||||
| A | 15.67 ± 0.05 | – | 13.85 ± 0.03 | 0.35 ± 0.01 | 255 ± 20 | 260 ± 20 |
| A2 | – | – | 12.12 ± 0.02 | – | – | – |
| A3a | 10.91 ± 0.05 | – | 9.18 ± 0.13 | 0.33 ± 0.01 | 270 ± 17 | – |
| A3 | 8.34 ± 0.05 | – | 6.53 ± 0.02 | 0.35 ± 0.01 | 280 ± 11 | 260 ± 20 |
| A4 | 4.61 ± 0.05 | – | – | – | 280 ± 30 | – |
| Red Arm | ||||||
| B2 | 4.77 ± 0.05 | 3.2 ± 0.03 | – | 0.37 ± 0.02 | 125 ± 20 | – |
| B2a | 8.83 ± 0.87 | – | 6.4 ± 0.14 | 0.46 ± 0.05 | 150 ± 18 | – |
| B | 11.11 ± 0.13 | 9.6 ± 0.03 | 9.18 ± 0.03 | 0.36 ± 0.01 | 160 ± 15 | 170 ± 15 |
| C | 15.80 ± 0.23 | – | 13.89 ± 0.06 | 0.36 ± 0.01 | 160 ± 15 | 160 ± 15 |
| D | 19.68 ± 0.68 | – | 17.9 ± 0.64 | 0.34 ± 0.01 | 145 ± 25 | 145 ± 25 |
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