Table 7
Peak gas-phase fractional abundances with respect to H2 and temperatures at which the peak abundance values are achieved, for models with varying activation energy barriers for the grain-surface reaction NH + CO → HNCO.
| M1 | M2 | M3 | M4 | M5 | |||||||||||
| EA = 2500 K | EA = 2000 K | EA = 1500 K | EA = 1250 K | EA = 1000 K | |||||||||||
|
|
|
|
|
|
|||||||||||
| Species | n[i]/n[H2] | T (K) | n[i]/n[H2] | T (K) | n[i]/n[H2] | T (K) | n[i]/n[H2] | T (K) | n[i]/n[H2] | T (K) | |||||
|
|
|||||||||||||||
| CH3NHCHO | 1.4(−8) | 139 | 1.3(−8) | 139 | 1.6(−9) | 139 | 1.5(−9) | 139 | 1.5(−9) | 139 | |||||
| CH3NCO | 2.8(−10) | 74 | 1.6(−9) | 74 | 6.9(−9) | 74 | 6.9(−9) | 74 | 7.0(−9) | 75 | |||||
| NH2CHO | 4.3(−7) | 160 | 4.4(−7) | 160 | 5.3(−7) | 157 | 5.3(−7) | 157 | 5.4(−7) | 157 | |||||
| HNCO | 1.3(−8) | 398 | 1.3(−8) | 398 | 2.2(−8) | 56 | 2.2(−8) | 56 | 2.2(−8) | 56 | |||||
| CH3CONH2 | 3.0(−8) | 138 | 3.0(−8) | 138 | 3.1(−8) | 138 | 3.1(−8) | 138 | 3.2(−8) | 138 | |||||
Notes. Model M1 uses the value adopted in previous hot-core models. X(Y) means X × 10Y.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.