Radiative and mechanical feedback into the molecular gas of NGC 253

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Table 2

Model parameters for the three LVG phases.

Component	Density log(n_H)	Kinetic temp	log	Ω ^a	C _em ^b	C _{N _CO} ^c
	log[cm^-3]	K	log[cm^-2 / km s^-1]

LVG I	3.5	60	17	5.0	0.13	0.48
LVG II	4.5	40	17	5.0	0.27	0.48
LVG III	5.5	110	17	0.5	0.59	0.05

Notes.

^(a)

Ω is the beam filling factor for each ISM phase.

^(b)

C_em is the fractional contribution of each ISM phase to the emission.

^(c)

C_{N_CO} is the fractional contribution of each ISM phase to the column density.

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