Tracing the evolutionary stage of Bok globules: CCS and NH3

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Table 3

Results of the NH₃(1, 1) and NH₃(2, 2) observations.

Source	υ_{LSR(1, 1)}	T_{mb(1, 1)}	Δυ_{obs(1, 1)}	υ_{LSR(2, 2)}	T_{mb(2, 2)}	Δυ_{obs(2, 2)}	τ_{m(1, 1)}	T_ex
	[km s^-1]	[K]	[km s^-1]	[km s^-1]	[K]	[km s^-1]	[K]	[K]

CB 6	−12.45 ± 0.09	0.15 ± 0.05	0.62 ± 0.18	...	<0.14	...	...	6*
CB 17	−4.65 ± 0.01	1.71 ± 0.10	0.34 ± 0.02	−4.70 ± 0.06	0.17 ± 0.04	0.79 ± 0.18	2.8 ± 0.6	5.4 ± 0.4
CB 222	−2.71 ± 0.04	0.29 ± 0.05	0.72 ± 0.10	...	<0.11	...	...	6*
BHR 13	6.44 ± 0.06	0.30 ± 0.07	1.25 ± 0.18	...	...	...	...	6*
BHR 34	4.78 ± 0.04	0.50 ± 0.10	0.69 ± 0.11	...	...	...	...	6*
BHR 36	5.27 ± 0.02	1.21 ± 0.07	0.52 ± 0.04	...	...	...	1.9 ± 0.5	4.3 ± 0.2
BHR 41	5.46 ± 0.05	0.36 ± 0.08	0.92 ± 0.16	...	...	...	...	6*
BHR 55	−5.50 ± 0.01	1.45 ± 0.11	0.51 ± 0.04	...	...	...	1.2 ± 0.3	5.1 ± 0.4
BHR 71	−4.39 ± 0.02	3.56 ± 0.11	0.71 ± 0.03	...	...	...	1.5 ± 0.3	8.0 ± 0.6
BHR 121-1	−12.61 ± 0.04	0.26 ± 0.06	0.61 ± 0.08	...	...	...	...	6*
BHR 121-2	−12.52 ± 0.05	0.27 ± 0.07	0.68 ± 0.15	...	...	...	...	6*
BHR 138	...	<0.21	...	...	...	...	...	6*
BHR 139-1	...	<0.20	...	...	...	...	...	6*
BHR 148	...	<0.36	...	...	...	...	...	6*

Notes. (*) T_ex is adopted as average value from Lemme et al. (1996) and Bourke et al. (1995b).

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