Characterizing the line emission from molecular clouds - II. A comparative study of California, Perseus, and Orion A

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Table 7

Dense gas masses, HCN(1−0) luminosities, and global HCN conversion factors.

Cloud	M₀₈ (M_⊙)	L_T[HCN(1−0)] (K km s⁻¹ pc²)	L08[HCN(1−0)] (K km s⁻¹ pc²) (K km s⁻¹ pc²)	f₀₈	α₀₈ (HCN) (M_⊙ (K km s⁻¹ pc²)⁻¹)
California	4800	210	16	0.08	23
Perseus	5600	77	28	0.37	73
Orion A	24000	524	290	0.55	46

Notes. M₀₈ represents the mass of gas over the A_K = 0.8 mag threshold, L_T the total line luminosity, L₀₈ the line luminosity from gas over the A_K = 0.8 mag threshold, f₀₈ = L₀₈/L_T, and α₀₈ the dense gas conversion factor (=M₀₈/L_T).

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