A dynamically young, gravitationally stable network of filaments in Orion B

Open Access

Table B.2

Evolution of the skeletons S1 and S2 after successive stages of cleaning in terms of number of pixels (Pix) and filaments (Fil).

Skeleton	S1		S2

	Pix	Fil	Pix	Fil
Raw state	5256	457	4837	447
Geometry cleaning	−646	N/A	−909	N/A
Initial state	4610	291	3928	246
Curvature cleaning	−814	−88	−924	−96
Width cleaning	−472	−43	−675	−67
Intermediate state	3664	157	2833	119
Contrast cleaning	−325	−20	−112	−9
Final state	3315	130	2708	106

Notes. The initial skeleton is first geometrically cleaned of short, isolated filaments, then we exclude filaments with too strong curvatures, too low relative contrasts, too broad or too narrow column density profiles. See text for details on why the numbers do not add up properly.

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