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Table 1

Main physical parameters of the identified molecular clouds.

13CO clouds

Parameters a1 a2 a3

Center position:
RA(J2000) (hms) 09 56 30 09 54 30 09 53 00
Dec(J2000) (°′′′) –57 37 30 –57 59 30 –57 57 00
(Peak) (K) 0.45 0.53 0.32
τ(13CO) ~0.09 ~0.11 ~0.07
τ(CO) ~1.7 ~2.5 ~1.1
Ω (10-6 ster) 7.4 9.7 5.1
N(13CO)LTE(1015 cm-2) ≲0.7 ≲1.1 ≲0.15
N(H2)LTE (1020 cm-2) ≲3.4 ≲5.3 ≲0.8
M(H2)LTE (102M) ~2.8 ~5.6 ~0.5

CO clouds

Parameters b1 b2

Center position:
RA(J2000) (hms) 09 56 00 09 54 30
Dec(J2000) (°′′′) –57 43 00 –58 02 00
(Peak) (K) 3.9 4.1
Texc (K) 7.1 7.3
(average) (K) 2.1 2.2
I(CO) (K km s-1) ~6.3 ~6.6
Ω (10-6 ster) 22.8 24.3
N(H2)X (1020 cm-2) 10.1 10.6
M(H2)X (103M) 2.6 ± 1.1 2.9± 1.3
Δvcld (km s-1) 3.3 4.1
Δvth (km s-1) 0.10 0.11
R (pc) 2.9 3.1
Mvir (103M) ~6.1 ~9.9

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