Fractionation in young cores: Direct determinations of nitrogen and carbon fractionation in HCN

Open Access

Table 2

Parameters for the HFS fit for H¹³CN.

Source	T_ex (K)	τ_center	τ_left
CB23	3.1±0.1	1.2 ±0.2	0.2 ±0.1
TMC2	3.1±0.3	0.7 ±0.3	0.1 ±0.1
L1495	3.3±0.3	0.4 ± 0.2	0.1 ±0.1
L1495AN	3.3±0.3	0.9 ± 0.2	0.2 ±0.1
L1512	3.3±0.1	1.1 ±0.2	0.2 ±0.1
L1517B	3.1±0.1	1.6 ±0.3	0.3 ± 0.1

Notes. τ_certer refers to the central HFS component at 86.3402 GHz. while τ_left refers to the weakest component at 86.3423 GHz.

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