Fragmentation and kinematics of dense molecular cores in the filamentary infrared-dark cloud G011.11–0.12

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Table 2

Cores and line parameters from PdBI-only and PdBI+MOPRA N₂H⁺ (1−0) datasets.

		Angular	Linear	PdBI only		PdBI+MOPRA

Core	Offset^a	Size^b	Size^c	v _lsr	FWHM	v _lsr	FWHM	τ	M _vir ^d
	[′′, ′′]	[′′]	[pc]	[km s^-1]	[km s^-1]	[km s^-1]	[km s^-1]		[M_⊙]

1a	−0.75, −12.00	10	0.17	29.7 ± 0.2	0.53 ± 0.67	29.7 ± 0.03	0.73 ± 0.05	7.1	6.5
1a′				32.2 ± 0.2	1.19 ± 0.67	32.0 ± 0.08	1.56 ± 0.02	0.1	29.5
1b	−8.25, −22.50	5	0.08	31.6 ± 0.02	0.58 ± 0.04	31.3 ± 0.04	0.99 ± 0.08	1.8	6.0

2a	−23.25, 3.75	6	0.10	30.3 ± 0.03	0.89 ± 0.05	30.1 ± 0.04	1.05 ± 0.06	11.2	8.0
2b	−27.75, 7.50	4	0.07	...	...	29.8 ± 0.08	1.48 ± 0.24	1.7	10.6

3a	23.25, 3.00	10	0.17	30.4 ± 0.01	1.45 ± 0.06	30.1 ± 0.02	1.89 ± 0.06	3.8	43.2
3b	9.75, 3.00	9	0.15	30.0 ± 0.03	0.61 ± 0.04	29.7 ± 0.03	1.28 ± 0.09	7.9	17.9
3c	33.75, 5.25	5	0.08	30.3 ± 0.02	0.52 ± 0.03	30.1 ± 0.03	1.80 ± 0.11	1.9	19.7
3d	42.00, 2.25	5	0.08	31.8 ± 0.03	2.08 ± 0.20	30.2 ± 0.06	2.70 ± 0.17	2.8	44.1

Notes.

^(a)

Offsets from the map centre position 18^h10^m17.9^s−19°24′24.̋9.

^(b)

Average angular diameter of core in the merged dataset.

^(c)

Linear diameter of core in the merged dataset assuming a distance of 3.41 kpc.

^(d)

The virial mass is computed assuming a ρ ∝ R^-1.8 density profile (Shirley et al. 2002) and using the size and linewidth from the merged dataset.

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