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Table 3

Properties of the 12CO (2–1) detected in emission.

Parameter Value
SCO (2−1) total 174 ± 17 Jy km s−1
7.3 × 107 K km s−1 pc2
M (H2) αCO  = 0.8 M ⋅ (K km s−1 pc−2)−1 3.2 × 108  M
αCO  = 4.6 M ⋅ (K km s−1 pc−2)−1 1.9 × 109  M
SCO (2−1) Circumnuclear disk 29 ± 3 Jy km s−1
1.2 × 107 K km s−1 pc2
M (H2) αCO  = 0.8 M ⋅ (K km s−1 pc−2)−1 5.3 × 107  M
αCO  = 4.6 M ⋅ (K km s−1 pc−2)−1 3.1 × 108  M

Notes. We estimate the total H2 mass assuming two different conversion factors between the luminosity of the 12CO (2–1) line and the mass of the molecular gas. The lower values of the mass are obtained adopting the typical value for the optically thick gas in ULIRG and AGN (αCO = 0.8 M ⋅ (K km s−1 pc−2)−1) and the upper limit are given for a Galactic conversion factor (αCO = 4.6 M ⋅ (K km s−1 pc−2)−1).

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