Table 2
Highest abundances of some hydrocarbon species not plotted in Fig. 4, but with an abundance higher than 10-10.
| Species | T 1500 ζ 0.54 | T 1500 ζ 1.1 | T 1000 ζ 0.54 | T 1000 ζ 1.1 | T 500 ζ 0.54 | T 500 ζ 1.1 | ||
|
|
||||||||
| CH | <10-10 | 4.4×10-8 (3×10-3) | <10-10 | 2.0×10-9 (9×10-4) | <10-10 | 1.2×10-10 (2×10-3) | ||
| 1CH2 | 1.7×10-9 (106) | 7.0×10-9 (3×102) | <10-10 | <10-10 | <10-10 | <10-10 | ||
| 3CH2 | 2.4×10-8 (106) | 1.1×10-7 (3×102) | <10-10 | 8.3×10-9 (8×10-3) | 2.1×10-9 (3×10-3) | 4.6×10-9 (3×10-3) | ||
| HCO | 2.5×10-8 (106) | 4.3×10-8 (106) | 1.8×10-10 (106) | 3.4×10-10 (106) | <10-10 | <10-10 | ||
| H2CO | 7.9×10-8 (106) | 1.4×10-7 (106) | 5.7×10-9 (106) | 1.1×10-8 (106) | 1.1×10-9 (2×10-3) | 2.8×10-9 (2×10-3) | ||
| CH2OH | 1.2×10-10 (106) | 2.0×10-10 (106) | <10-10 | <10-10 | <10-10 | |||
| CH3OH | 1.6×10-9 (106) | 2.7×10-10 (106) | 4.5×10-10 (106) | 8.9×10-10 (106) | 1.8×10-10 (106) | 3.6×10-10 (106) | ||
| C2H | <10-10 | 1.6×10-7 (2×102) | <10-10 | 5.0×10-9 (9×10-4) | <10-10 | <10-10 | ||
| CH2CO | 1.9×10-10 (106) | 6.8×10-10 (106) | <10-10 | <10-10 | <10-10 | <10-10 | ||
| CH2CHO | <10-10 | <10-10 | <10-10 | <10-10 | 6.5×10-10 (2×10-3) | 1.6×10-9 (2×10-3) | ||
| C2H3 | 1.1×10-9 (106) | 4.7×10-9 (106) | <10-10 | 2.1×10-10 (7×10-2) | <10-10 | <10-10 | ||
| C2H4 | 8.2×10-8 (106) | 3.6×10-7 (106 ) | 8.1×10-9 (106) | 7.1×10-8 (9×10-2) | 2.0×10-7 (5×10-3) | 7.5×10-7 (5×10-3) | ||
| C2H5 | 8.1×10-10 (106) | 3.4×10-9 (106) | <10-10 | 1.3×10-10 (106) | <10-10 | 3.6×10-10 (2×10-1) | ||
| C2H6 | 5.0×10-9 (106) | 2.1×10-8 (106) | 4.1×10-9 (106) | 1.6×10-8 (106) | 6.2×10-7 (2×10-1) | 2.3×10-6 (2×10-1) | ||
| aC3H4 | <10-10 | <10-10 | <10-10 | <10-10 | 5.5×10-9 (3×10-3) | 1.8×10-8 (2×10-3) | ||
| pC3H4 | <10-10 | 1.6×10-10 (106 ) | <10-10 | <10-10 | 1.1×10-9 (4×10-3) | 3.0×10-9 (4×10-3) | ||
| C3H2 | <10-10 | 6.1×10-9 (2×10-2) | <10-10 | 1.7×10-9 (6×10-3) | 5.3×10-10 (2×10-3) | 1.1×10-9 (2×10-3) | ||
| C3H3 | <10-10 | 2.2×10-9 (2×10-2) | <10-10 | 7.3×10-9 (6×10-3) | 2.5×10-9 (2×10-3) | 5.1×10-9 (2×10-3) | ||
| C2H3CHO | <10-10 | <10-10 | <10-10 | <10-10 | 3.4×10-10 (1×10-3) | 8.1×10-10 (1×10-3) | ||
| 2C3H5 | <10-10 | <10-10 | <10-10 | <10-10 | 2.6×10-10 (8×10-4) | 3.5×10-10 (8×10-4) | ||
| C3H8 | <10-10 | <10-10 | <10-10 | <10-10 | 4.6×10-9 (1×10-3) | 2.9×10-8 (2×10-1) | ||
| C4H2 | <10-10 | 1.1×10-10 (102) | <10-10 | 1.5×10-9 (5×10-3) | 3.6×10-9 (2×10-3) | 6.7×10-9 (10-3) | ||
| C4H4O | <10-10 | <10-10 | <10-10 | <10-10 | <10-10 | 1.4×10-10 (1×10-3) | ||
| 1C4H6 | <10-10 | <10-10 | <10-10 | <10-10 | 2.0×10-10 (3×10-3) | 6.9×10-10 (2×10-3) | ||
| iC4H8 | <10-10 | <10-10 | <10-10 | <10-10 | < 10-10 | 1.4×10-10 (3×10-3) | ||
| C4H10 | <10-10 | <10-10 | <10-10 | <10-10 | <10-10 | 4.4×10-10 (2×10-1) | ||
| cC5H6 | <10-10 | <10-10 | <10-10 | 3.1×10-10 (3×10-2) | 1.3×10-10 (2×10-3) | 3.6×10-10 (10-3) | ||
| lC6H4 | <10-10 | <10-10 | <10-10 | <10-10 | 2.6×10-8 (3×10-3) | 8.4×10-8 (3×10-3) | ||
| cC6H6 | <10-10 | <10-10 | <10-10 | <10-10 | 1.1×10-9 (2×10-3) | 3.1×10-9 (2×10-3) | ||
| cC6H5OH | <10-10 | <10-10 | <10-10 | <10-10 | 2.2×10-8 (3×10-3) | 7.6×10-8 (3×10-3) | ||
Notes. These mixing ratios are obtained using the C0-C6 scheme with the six models including photodissociations. The level pressure (in mbar) at which these abundances are reached is noted between parenthesis. Hydrocarbons that are not indicated in this table have an abundance always lower than 10-10.
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