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Table 9.

Physical properties of 22″ central regions.

NGC Carbon
Hydrogen
NGC Carbon
Hydrogen
NGC Carbon
Hydrogen
IC NC NH2 Mgas X IC NC NH2 Mgas X IC NC NH2 Mgas X
e17 e21 e7 e17 e21 e7 e17 e21 e7



(%) (cm−2) (M) (X°) (%) (cm−2) (M) (X°) (%) (cm−2) (M) (X°)
(1) (2) (3) (4) (5) (6) (1) (2) (3) (4) (5) (6) (1) (2) (3) (4) (5) (6)
253 30 210 21 8 0.10 2903 36 15 2.2 3 0.07 4457 59 9 1.1 ... 0.10
470 40 5 0.3 12 0.04 3034 39 83 8.1 14 0.06 4527 87 50 ... 18 0.23
520 15 20 1.8 42 0.08 3044 09 3 0.2 ... 0.06 4536 28 10 0.6 18 0.05
613 45 21 1.8 ... 0.13 3079 30 42 4.0 35 0.08 4631 22 4 0.2 ... 0.02
628 60 8 0.7 ... 0.50 3175 34 12 1.0 4 0.11 4666 28 15 1.4 ... 0.09
660 44 55 5.4 22 0.17 3227 28 5 0.3 4 0.02 4736 32 9 0.6 0.4 0.07
891 14 36 3.6 12 0.12 3310 34 2 0.2 2 0.10 4826 47 14 1.2 0.4 0.07
908 42 12 1.0 ... 0.17 3504 39 9 0.8 14 0.08 4945 35 125 15 ... 0.11
972 30 13 0.8 23 0.06 3593 17 19 2.2 2 0.14 5033 21 9 0.6 4 0.06
Maf2 48 34 3.2 2 0.07 3627 48 10 1.1 1 0.08 5055 24 21 1.9 3 0.14
1055 23 26 1.7 ... 0.11 3628 21 80 7.7 11 0.19 5135 20 9 0.7 58 0.09
1068 34 36 3.5 40 0.10 3690 22 22 1.9 ... 0.15 5194 56 24 2.4 ... 0.25
1084 35 6 0.4 ... 0.06 4030 20 12 1.0 ... 0.12 5236 19 31 2.9 0.9 0.08
1097 51 47 4.2 57 0.16 4038 42 15 1.1 15 0.11 5713 23 12 1.0 0.5 0.10
1365 43 60 6.0 98 0.12 4039 14 8 0.6 9 0.06 5775 20 9 0.7 15 0.07
I342 37 21 2.0 2 0.06 4051 23 17 1.6 5 0.35 6000 23 15 1.2 26 0.08
1614 11 11 0.7 82 0.09 4102 30 15 1.3 11 0.09 6240 09 7 0.5 ... 0.04
1792 51 7 0.4 ... 0.08 4254 51 7 0.3 23 0.04 6764 21 11 0.9 ... 0.20
1808 32 16 1.4 7 0.05 4258 22 9 0.7 2 0.08 6946 38 43 3.9 2 0.08
2146 29 31 2.7 27 0.07 4293 24 4 0.4 ... 0.05 6951 22 15 1.4 2 0.24
2273 37 4 0.2 7 0.05 4303 18 10 0.8 4 0.08 7331 61 16 1.4 ... 0.45
2559 16 12 1.0 14 0.07 4321 29 34 3.3 14 0.20 7469 49 6 0.3 ... 0.03
2623 38 4 0.2 50 0.06 4414 23 14 1.2 ... 0.12 7541 83 19 1.5 ... 0.27

Notes. NH = 2000 NC for the adopted gas-phase carbon abundance (Appendix C). Mgas = 1.35 MH allowing for the presence of helium.

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