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Home All issues Volume 705 (January 2026) A&A, 705 (2026) A261 Full HTML
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Table A.1

Linewidths and velocity gradients within filaments.

HCO+ H13CO+
Core Filament Length [pc] Linewidth [km s−1] Velocity gradient [km s−1 over 0.1 pc] Length [pc] Linewidth [km s−1] Velocity gradient [km s−1 over 0.1 pc]
A 1 1.2 2.0−1.1+1.9$\[2.0_{-1.1}^{+1.9}\]$ 0.8 0.8 1.5−0.7+1.9$\[1.5_{-0.7}^{+1.9}\]$ 1.7(#)
2 0.3 1.7−0.5+0.6$\[1.7_{-0.5}^{+0.6}\]$ - 0.5 1.6−0.7+1.6$\[1.6_{-0.7}^{+1.6}\]$ -
3 2.0 1.7−0.9+1.7$\[1.7_{-0.9}^{+1.7}\]$ 1.3 0.4 1.8−0.7+1.6$\[1.8_{-0.7}^{+1.6}\]$ A1(*)
4 0.6 2.2−1.4+1.3$\[2.2_{-1.4}^{+1.3}\]$ A3(*) 3.1 1.5−1.3+2.2$\[1.5_{-1.3}^{+2.2}\]$ -
5 2.0 1.8−1.0+2.1$\[1.8_{-1.0}^{+2.1}\]$ A3(*) 2.2 1.6−0.9+1.3$\[1.6_{-0.9}^{+1.3}\]$ -
6 - - 0.8 1.4−0.7+1.3$\[1.4_{-0.7}^{+1.3}\]$ A4(−)
B 1 0.4 2.5−1.2+1.3$\[2.5_{-1.2}^{+1.3}\]$ - 1.0 1.8−0.9+1.5$\[1.8_{-0.9}^{+1.5}\]$ 1.4
2 1.0 1.6−0.9+1.7$\[1.6_{-0.9}^{+1.7}\]$ - 1.3 1.6−0.9+1.6$\[1.6_{-0.9}^{+1.6}\]$ B1(*)
3 0.9 2.1−1.1+1.6$\[2.1_{-1.1}^{+1.6}\]$ - - - -
4 1.2 2.2−1.4+1.5$\[2.2_{-1.4}^{+1.5}\]$ - - - -
C 1 0.1 2.2−0.5+0.9$\[2.2_{-0.5}^{+0.9}\]$ - 1.9 1.3−0.4+1.2$\[1.3_{-0.4}^{+1.2}\]$ 0.7
2 1.0 2.1−1.1+1.4$\[2.1_{-1.1}^{+1.4}\]$ - 0.5 2.1−0.9+1.1$\[2.1_{-0.9}^{+1.1}\]$ -
3 0.5 1.6−0.8+1.2$\[1.6_{-0.8}^{+1.2}\]$ 0.5 1.6 1.6−0.8+1.6$\[1.6_{-0.8}^{+1.6}\]$ C2(−)
4 0.7 2.4−1.5+1.3$\[2.4_{-1.5}^{+1.3}\]$ 0.8 - - -
D 1 0.7 1.9−1.1+2.0$\[1.9_{-1.1}^{+2.0}\]$ 0.4 1.7 1.4−0.6+0.7$\[1.4_{-0.6}^{+0.7}\]$ -
2 0.6 1.8−0.8+1.5$\[1.8_{-0.8}^{+1.5}\]$ D1(*) 0.3 1.6−0.8+1.4$\[1.6_{-0.8}^{+1.4}\]$ D1(*)
3 0.4 2.2−1.0+1.4$\[2.2_{-1.0}^{+1.4}\]$ - 0.2 1.2−0.3+0.4$\[1.2_{-0.3}^{+0.4}\]$ -
4 0.7 2.2−1.4+1.7$\[2.2_{-1.4}^{+1.7}\]$ - 1.1 1.6−1.0+2.3$\[1.6_{-1.0}^{+2.3}\]$ 0.7
E 1 0.5 1.9−1.0+2.1$\[1.9_{-1.0}^{+2.1}\]$ 2.4(#) 0.8 1.6−0.8+2.0$\[1.6_{-0.8}^{+2.0}\]$ -
2 0.7 2.2−1.1+1.8$\[2.2_{-1.1}^{+1.8}\]$ 2.0(#) 2.2 1.4−0.7+1.4$\[1.4_{-0.7}^{+1.4}\]$ -
3 0.9 2.3−1.1+1.6$\[2.3_{-1.1}^{+1.6}\]$ E2(*) - - -
4 0.4 2.4−1.2+1.6$\[2.4_{-1.2}^{+1.6}\]$ E2(*) - - -
F 1 0.7 1.7−0.8+2.1$\[1.7_{-0.8}^{+2.1}\]$ - 1.7 1.3−0.5+1.4$\[1.3_{-0.5}^{+1.4}\]$ -
2 0.9 1.9−1.0+2.1$\[1.9_{-1.0}^{+2.1}\]$ - - - -
Arem 1 0.7 1.7−0.8+1.3$\[1.7_{-0.8}^{+1.3}\]$ - - - -
2 1.2 1.6−0.7+2.2$\[1.6_{-0.7}^{+2.2}\]$ - - - -
3 0.5 2.3−1.4+1.5$\[2.3_{-1.4}^{+1.5}\]$ - - - -
4 0.6 2.3−1.4+1.5$\[2.3_{-1.4}^{+1.5}\]$ - - - -
Brem 1 2.2 1.9−1.0+2.0$\[1.9_{-1.0}^{+2.0}\]$ - - - -

(*) has the same spectra (and gradient) close to the core as the mentioned filament.

(-) has the same spectra (without gradient) close to the core as the mentioned filament.

(#) may be the result of two merging velocity components.

Notes. The linewidths are given as mean values and ranges (indicating minimum and maximum values), and the velocity gradients are determined close to each core (within a 0.1 pc distance). All values correspond to the main spectral Gaussian peaks.

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