Table 1
Observed properties of the filaments.
Filament | d | Length | Width | R out |
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M line | PA |
[pc] | [pc] | [pc] | [pc ] | [1021 cm-2] | [1021 cm-2] | [M⊙ pc-1] | [deg] | |
|
||||||||
Musca ......... | 200 | 10 | 0.75 | 1 | 8 | 2.2 | 30 | 30 |
B211 ......... | 140 | 2.6 | 0.33 | 0.5 | 17 | 3 | 47 | 90 |
L1506 ......... | 140 | 3 | 0.35 | 0.5 | 7 | 2.3 | 26 | 55 |
Notes. Column 3 gives the length along the filament crest. Column 4 gives the filament full width at half maximum (FWHM) derived from a Gaussian fit to the total intensity radial profile. The values given are for the observations, i.e., without beam deconvolution. The outer radius (given in Col. 5) is defined as the radial distance from the filament crest at which its radial profile amplitude is equal to that of the background (without beam deconvolution). Columns 6 and 7 give the observed column density values at the crest of the filament (r = 0) and at r = Rout, respectively. The latter corresponds to the mean value of the background. Column 8 gives the mass per unit length estimated from the radial column density profiles of the filaments. Column 9 gives the position angle (PA) of the segment of the filament that is used to derive the mean profile. The PA (measured positively from north to east) is the angle between the Galactic north (GN) and the tangential direction to the filament crest derived from the I map.
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