The search for the magnetic precursor of C-type shocks in young molecular outflows

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Table 3

J = 4 → 3/1 → 0 integrated intensity ratios for H¹³CO⁺ and HN¹³C for each component detected towards each outflow (see Fig. 6).

		4 → 3/1 → 0 ratio
Outflow	Molecule	C1^a	C2	C3


NGC 1333	H¹³CO⁺	0.48	0.07	...
	HN¹³C	≤0.09	≤0.04	...
L1448-IRS3	H¹³CO⁺	0.23	0.26	0.34
	HN¹³C	≤0.29	≤0.03	≤0.18
VLA 1623	H¹³CO⁺	0.59	0.34	...
	HN¹³C	–	≤0.20	...
IRAS 20353	H¹³CO⁺	0.05	≤0.23	...
	HN¹³C	≤0.07	≤0.17	...

Notes. The integrated intensities have been converted to the T_MB scale using the beam efficiencies given in Sect. 3.

^(a)

The approximate central velocities (in km s^-1) of each component for each outflow are 6.9 (C1) and 7.8 (C2) for NGC 1333, 4.0 (C1), 4.7 (C2) and 5.4 (C3) for L1448-IRS3, 2.6 (C1) and 3.5 (C2) for VLA 1623, and 2.6 (C1) and 3.1 (C2) for IRAS 20353.

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