Table 4
Best fitting models (χ2 based).
| b/a | Used | Velocity (km s-1) | Spin |
| PA | constraints | (km s-1) | parameter |
|
|
|||
| 0.97 | photometry | 490 (380 to 600) | 0.61 (0.48 to 0.69) |
| N/A | gas | 350 (340 to 360) | 0.35 (0.32 to 0.39) |
| both | 420 (360 to 540) | 0.54 (0.45 to 0.67) | |
|
|
|||
| 0.8 | photometry | 430 (360 to 580) | 0.57 (0.47 to 0.69) |
| 40 | gas | 330 (320 to 340) | 0.39 (0.35 to 0.43) |
| both | 380 (340 to 480) | 0.51 (0.44 to 0.63) | |
|
|
|||
| 0.8 | photometry | 460 ( 370 to 600 ) | 0.58 ( 0.48 to 0.69) |
| var | gas | 330 ( 320 to 340) | 0.39 ( 0.39 to 0.43) |
| both | 390 ( 350 to 390 ) | 0.51 ( 0.51 to 0.62) | |
Notes. Fits were performed within a radial range excluding a bump related to the spiral structure and the bulge (see text). The best fit value of each parameter is given, along with the 68% confidence interval computed as in Avni (1976). The left column provides the geometry (b/a and PA). “var” means a variable PA has been adopted, following Lelli et al. (2010).
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.