Cold gas as an ice diagnostic toward low mass protostars

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Table 2:

Observed frequencies and targeted molecules at the four different settings.
Frequency	Frequency	Transition^a	$E_{\rm u}$ (K)	rms (mK)	Integrated intensity [uncertainty] (K km s^-1)
range (GHz)	(GHz)				IRAS 03254	B1-b	L1489 IRS	SVS 4-5
CH₃OH
1) 96.739-96.756	96.739 (E^-)	2_{1 2} - 1_{1 1}	20.0	11-15	0.11 [0.03]	1.65 [0.22]	0.10 [0.03]	1.47 [0.33]
	96.741 (A⁺)	2_{0 2}- 1_{0 1}	14.4		0.16 [0.04]	2.18 [0.21]	0.17 [0.05]	2.72 [0.58]
	96.745 (E⁺)	2_{0 2}- 1_{0 1}	27.5		0.017 [0.017]	0.37 [0.20]	0.024 [0.024]	0.64 [0.39]
	96.756 (E⁺)	2_{1 1} - 1_{1 0}	35.4		<0.01	0.09 [0.26]	<0.024	0.074 [0.030]
2) 251.360-251.811	251.738 (A $^{\rm\pm}$ )	6_{3 3} - 6_{2 4}	98.6	28-40	<0.033	-	<0.079	<0.26
HNCO
3) 109.872-109.938	109.906	5_{0 5} - 4_{0 4}	15.4	15-23	0.038 [0.030]	-	<0.027	0.22 [0.07]
4) 131.885-131.886	131.886	6_{0 6} - 5_{0 5}	18.6	19-29	<0.021	0.43 [0.06]	<0.037	0.22 [0.07]

^a The quantum numbers for the pure rotational transitions of CH₃OH and HNCO are $J_{\rm K_aK_c}$ and $J_{\rm K_{-1}K_{+1}}$ , respectively.

Source LaTeX | All tables | In the text

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