Star forming regions linked to RCW 78 and the discovery of a new IR bubble

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Table 5

Dust and molecular gas parameters.

LABOCA results:
	Size	S₈₇₀	M_dust^a	M_tot^b
	[arcsec]	[mJy]	[M_⊙]	[M_⊙]

Southern clump	50	1060 ± 300	1.3	130
Filament	270 × 27	400 ± 100	0.43	43
Clump 1	180 × 110	2520 ± 340	3.2	320
Clump 2	30 × 48	230 ± 50	0.24–0.43	24–43

Molecular gas parameters:
	I(¹³CO)	τ _13CO	Ω	R	N(¹³CO)	N(H₂)	M _mol	n _H₂
	[K km s^-1]		[10^-6 sr]	[pc]	[10¹⁵ cm^-2]	[10²⁰ cm^-2]	[M_⊙]	[cm^-3]

Filament	3.7	0.10	0.96	–	2.4 ± 0.4	10.0 ± 0.4	640 ± 120	200
Southern clump	5.9	0.9	0.23	1.35	5.3 ± 0.1	26 ± 1	340 ± 10	500

Notes.

^(a)

Derived from the emission at 870 μm. For the southern clump, the filament, and clump 1 we used T_dust derived from the SEDs. For clump 2, the first value corresponds to T_dust = 30 K, and the second to T_dust = 20 K.

^(b)

Derived adopting a gas-to-dust ratio equal to 100.

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