The spine of the swan: a Herschel study of the DR21 ridge and filaments in Cygnus X

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Table 1

Average properties of the DR21 filaments and ridge.

	S	SW	F3S	F3N	F1S	F1N	N	Ridge

Length (pc)	2.6	1.6	1.3	2.7	1.3	6.9	1.1	4.1
Mean crest column density^a (10²² cm^-2)	4.4	1.2	1.6	2.1	7.7	1.9	4.8	41.6
Integration radius (pc)	0.58	0.41	0.24	0.24	0.48	0.39	0.49	1.15
Total mass (M_⊙)	1350	210	130	400	960	1210	610	15 210
Mean line mass (M_⊙/pc)	500	120	100	140	700	170	520	3670
Weighted mean central width^b (pc)	0.28 ± 0.07	0.31 ± 0.07	0.27 ± 0.08	0.32 ± 0.11	0.26 ± 0.07	0.33 ± 0.16	0.34 ± 0.17	0.34 ± 0.12

Notes.

^(a)

Background-subtracted column density.

^(b)

The fit error in width σ_w was used for weighting data points with 1/.

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