G183: An outer galaxy filament feeding a massive protostar

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Table A.1

Properties of the analyzed spectral lines

Molecule	Quantum Numbers	ν^a (GHz)	log(A_ul)^a (log s⁻¹)	$E_{u} / k_{B}^{a}$ $\[E_{\mathrm{u}} / k_{\mathrm{B}}^{a}\]$ (K)	$n_{crit}^{b}$ $\[n_{\text {crit}}^{b}\]$ (cm⁻³)	$n_{eff}^{c}$ $\[n_{\text {eff}}^{c}\]$ (cm⁻³)
CO	2 − 1	230.538	−6.16	11.5
CO	3 − 2	345.796	−5.60	23.1
¹³CO	1 − 0	110.201	−7.20	5.3
¹³CO	2 − 1	220.399	−6.22	11.0
C¹⁸O	1 − 0	109.782	−7.20	5.3
C¹⁸O	2 − 1	219.560	−6.22	11.0
SO	5₅ − 4₄	215.220	−3.92	34.0
SO	5₆ − 4₅	219.949	−3.87	27.0
HCN	1 − 0	88.631	−4.62	4.3	3 10⁵	4.5 10³
HNC	1 − 0	90.663	−4.57	4.4	1.1 10⁵	2.3 10³
HCO⁺	1 − 0	89.188	−4.38	4.3	4.5 10⁴	5.3 10²
N₂H⁺	1 − 0	93.173	−4.40	4.5	4.1 10⁴	5.5 10³
H₂CO	3_0,3 − 2_0,2	218.222	−3.55	21.0	7.8 10⁵	2.0 10⁵
H₂CO	3_2,2 − 2_2,1	218.476	−3.80	68.1
H₂CO	3_2,1 − 2_2,0	218.760	−3.80	68.1
HC₃N	12 − 11	109.173	−3.99	34.1	2.1 10⁵	1.1 10⁵
HC₃N	10 − 9	90.979	−4.24	24.0	1.2 10⁵	4.3 10⁴
CH₃CN	5₀ − 4₀	91.987	−4.21	13.2	1.7 10⁵	7.4 10⁴
CH₃CN	5₁ − 4₁	91.985	−4.23	20.4
CH₃CN	5₂ − 4₂	91.980	−4.29	41.8
CH₃CN	5₃ − 4₃	91.971	−4.41	77.5
CH₃CN	5₄ − 4₄	91.959	−4.67	127.5
CH₃CN	6₀ − 5₀	110.383	−3.96	18.5	3.1 10⁵	1.5 10⁵
CH₃CN	6₁ − 5₁	110.381	−3.98	25.7
CH₃CN	6₂ − 5₂	110.374	−4.01	47.1
CH₃CN	6₃ − 5₃	110.364	−4.09	82.8
CH₃CN	6₄ − 5₄	110.350	−4.21	134.3

Notes. ^a ν, log A_ul, E_u/k_B from Cologne Database for Molecular Spectroscopy (CDMS Müller et al. 2001, 2005; Endres et al. 2016), ^b $n_{crit}^{thin,nobg}$ $\[n_{\text {crit}}^{\text {thin,nobg}}\]$ for T_k=20 K (Shirley 2015), ^c n_eff for T_k = 20 K (Shirley 2015)

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