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Table 2

Gas mass per phase and per component in solar masses towards the GC within −0.8° < l < 1.4° and |b| < 0.3°.

H I(a) H2(b) Htot
Disk(c) 1.20.3+0.0×107$1.2_{ - 0.3}^{ + 0.0} \times {10^7}\$ 8.91.8+1.8×106$8.9_{ - 1.8}^{ + 1.8} \times {10^6}\$ 2.10.5+0.2×107$2.1_{ - 0.5}^{ + 0.2} \times {10^7}\$
CMZ 2.70.6+0.0×106$2.7_{ - 0.6}^{ + 0.0} \times {10^6}\$ 2.00.3+0.3×107$2.0_{ - 0.3}^{ + 0.3} \times {10^7}\$ 2.30.3+0.3×107$2.3_{ - 0.3}^{ + 0.3} \times {10^7}\$
Total(c) 1.40.3+0.0×107$1.4_{ - 0.3}^{ + 0.0} \times {10^7}\$ 2.90.3+0.3×107$2.9_{ - 0.3}^{ + 0.3} \times {10^7}\$ 4.40.7+0.3×107$4.4_{ - 0.7}^{ + 0.3} \times {10^7}\$

Notes. (a)The lower uncertainty corresponds to a milder H I absorption correction. (b)Positive/negative errors correspond to the min/max deviation from the average NH2 estimate between the two CO isotopes considered. (c)The mass in the disk is only computed considering the distance of the CMZ in order to evaluate the bias on the total mass estimate that would be introduced by the absence of component separation.

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