Physical conditions of molecular gas in the Circinus galaxy Multi-J CO and Ci 3PP0 observations

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Table 5

Parameter restrictions for the LVG modeling.

1) T_kin = 10–1000 K

2) n(H₂) = 10²–10⁷cm^-3

3) (dv/dr) = 1–360kms^-1 pc^-1,x_CO= 8 × 10^-5

4) K_vir> 1

5) M_H₂ ≤ 1.4 × 10⁹M_⊙

6) For Low-J CO lines: F_18′′ ≤ F_45′′^a

7) φ_A< 1^b

Notes.

^(a)

F_18′′ and F_45′′ denote modeled fluxes in an 18′′ beam and measured fluxes in a 45′′ beam, respectively.

^(b)

φ_A is the area filling factor.

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