Table 3
Best-fit model parameters for the finger components of NGC 6302.
Structure | r | h | offset | PA | i | δV | n | T | Vexp | |
(1016 cm) | (1016 cm) | (1016 cm) | (km s-1) | (cm-3) | (K) | (km s-1) | ||||
|
||||||||||
Finger inner sections | constant value | |||||||||
|
||||||||||
Finger E inner | 2.5 | 1.1 | 20.2 | 155o | 192o | 2 | 3![]() |
80![]() |
20![]() |
|
Finger W inner | 2.8 | 3.5 | 18.4 | 215o | 195o | 4 | 8![]() |
70![]() |
26![]() |
|
|
||||||||||
Finger outer sections | linear V max | |||||||||
|
||||||||||
Finger E outer | 2.5 | 11.4 | 26.8 | 155o | 192o | 2 | 4![]() |
50![]() |
28![]() |
|
Finger W outer | 2.8 | 10.5 | 25.9 | 215o | 195o | 2 | 2![]() |
50![]() |
38![]() |
Notes. The sizes correspond to a distance to the nebula of 1.17 kpc. The uncertainty range is included for every parameter except for those concerning the geometry. Parameters: r is the radius of the cylinder defining the finger, and h its height. “offset” refers to the displacement of the centre of a given structure from the central star, in the direction defined by PA and i. PA and i are the position angle and inclination of the symmetry axis of the structure, as defined within the SHAPE modifier “PA/Inc Rotation”. δV, n, and T are the microturbulence velocity, the density, and the temperature, respectively. Vexp is the expansion velocity of the given structure. The velocity of the inner section of each finger is a constant value. The value of the velocity shown for the outer section is the velocity of the farthest edge from the star, with the velocity following a ballistic expansion pattern.
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