Interaction between the supernova remnant W44 and the infrared dark cloud G034.77-00.55: Shock induced star formation

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Table 2

N₂H⁺ and N₂D⁺ best LTE model parameters, as obtained by MADCUBA (odd lines), towards the three positions and corresponding $D_{frac}^{N_{2} H^{+}}$ $D_{{\rm{frac}}}^{{{\rm{N}}_{\rm{2}}}{{\rm{H}}^ + }}$ .

	N₂H⁺				N₂D⁺				$D_{frac}^{N_{2} H^{+}}$ $D_{{\rm{frac}}}^{{{\rm{N}}_{\rm{2}}}{{\rm{H}}^ + }}$	Reference
	N_tot	T_ex	v₀	Δv	N_tot	T_ex	v₀	Δv
	(10¹³ cm⁻²)	(K)	(km s⁻¹)	(km s⁻¹)	(10¹² cm⁻²)	(K)	(km s⁻¹)	(km s⁻¹)
Shock	0.50±0.04	4.4	42.2	3.0	0.5±0.1	3.9	42.3	3.1	0.080±0.006	This work
	0.36±0.09	9	42.2	3.2	0.3±0.1	9	42.2	3.2	0.07±0.03	Cosentino+23
Ridge	1.10±0.05	4.9	40.9	2.8	0.6±0.07	4.4	41.3	3.1	0.055±0.007	This work
	0.8±0.2	9	40.9	3.1	0.4±0.1	9	41.4	3.1	0.05±0.03	Cosentino+23
Clump	1.70±0.08	4.8	41.7	2.5	1.4±0.08	4.3	42.0	2.7	0.10±0.02	This work
	1.1±0.1	9	41.7	2.8	1.2±0.1	9	42.1	3.0	0.10±0.02	Cosentino+23

Notes. For each position we also report the corresponding values already presented in Cosentino et al. (2023) (Cosentino+23; even lines).

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