Table 4.
Characteristics of the 12 selected molecular clumps.
| ID | Offsets | Req |  |
MH2 | ΣH2 | αvir | NH2 |
|---|---|---|---|---|---|---|---|
| (arcsec) | pc | K km s−1 pc2 | 103 M⊙ | M⊙pc−2 | 1020 cm−2 | ||
| 1 | −5.2, −32.5 | 11.0 ± 0.7 | 3321 ± 138 | 14.5 ± 0.6 | 36.4 ± 6.3 | 68 ± 11 | 20.2 ± 3.5 |
| 2 | 30.8, 2.3 | 10.3 ± 0.9 | 2202 ± 137 | 9.6 ± 0.6 | 27.8 ± 6.5 | 44 ± 10 | 15.4 ± 3.6 |
| 3 | 34.4, −3.8 | 15.8 ± 0.7 | 2119 ± 77 | 9.2 ± 0.3 | 11.3 ± 1.4 | 121 ± 15 | 6.2 ± 0.8 |
| 4 | 28.9, 10.8 | 12.4 ± 0.6 | 1644 ± 84 | 7.2 ± 0.4 | 14.3 ± 2.1 | 71 ± 13 | 7.9 ± 1.2 |
| 5 | 13.1, −22.7 | 12.4 ± 0.5 | 1709 ± 70 | 7.5 ± 0.3 | 14.9 ± 1.9 | 87 ± 12 | 8.3 ± 1.1 |
| 6 | 0.9, −45.9 | 9.2 ± 0.7 | 2940 ± 107 | 12.8 ± 0.5 | 46.6 ± 8.4 | 35 ± 6 | 25.9 ± 4.7 |
| 7 | 19.8, 5.9 | 11.1 ± 0.5 | 1087 ± 49 | 4.7 ± 0.2 | 11.8 ± 1.7 | 311 ± 45 | 6.6 ± 0.9 |
| 8 | 35.7, 0.4 | 13.1 ± 0.8 | 1112 ± 65 | 4.8 ± 0.3 | 8.6 ± 1.6 | 236 ± 47 | 4.7 ± 0.9 |
| 9 | 2.1, −9.9 | 17.5 ± 0.6 | 650 ± 30 | 2.8 ± 0.1 | 2.8 ± 0.3 | 142 ± 23 | 1.5 ± 0.2 |
| 10 | 7.6, −24.0 | 19.8 ± 1.1 | 968 ± 41 | 4.2 ± 0.2 | 3.3 ± 0.5 | 209 ± 30 | 1.8 ± 0.3 |
| 11 | −22.3, −33.7 | 18.0 ± 0.7 | 852 ± 40 | 3.7 ± 0.2 | 3.5 ± 0.4 | 66 ± 12 | 1.9 ± 0.2 |
| 12 | 1.5, 1.7 | 17.0 ± 0.9 | 579 ± 37 | 2.5 ± 0.2 | 2.7 ± 0.4 | 294 ± 56 | 1.5 ± 0.2 |
Notes. The descriptive properties are shown in Table 3. The offsets are calculated according to the optical centre of M 31 at J2000 coordinates 00h 42m 44.37s and +41 ° 16′ 8.34″. The calculation of Req is explained in Sect. 2.3. The CO luminosity 
, luminous mass MH2, surface density ΣH2, virial parameter αvir, and H2 column density NH2 calculations are detailed in Sect. 3.
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