Classification of molecules according to their sensitivity to the initial abundances.
|#||Conditions||[X]i = [X]f||[X]i ≠ [X]f|
|1||[X]i,A = [X]i,B [X]f,A = [X]f,B||c-C3 H, c-C3H2, C3H8, CCS, CH2OH, CH3CN, CH3OH, CH3S, CH3SH, CH4, CH5+, H2CO, H2CS, H2O, H2S, HC3N, HCS, HCl, HF, l-C3H2, N2, P, SiC4H, SiC6H, SiC8H, SiH4||C4H, CCH, CH3, CN, CS, H3+, H5C2O2+, l-C3H, N2H+|
|2||[X]i,A = [X]i,B [X]f,A ≠ [X]f,B||CH3O, HCO, HCO+, OH, PCH3+|
|3||[X]i,A ≠ [X]i,B [X]f,A = [X]f,B||CH3CCH, CH3CHO, CH3OCH3, H2CCO, HCOOCH3, OCS|
|4||[X]i,A ≠ [X]i,B [X]f,A ≠ [X]f,B||CH2 NH, CH3COCH3b, COb, CO2, H2S3, HCN, HCOOH, HCPa, HCSi, (HNC), HNCO, HNOb, HOOH, HSO, N2O, NH2CHO, NH2CH2OH, (NH3), NS, PN, POa, SiO, SO, SO2||C2 H7+, CH3COCH3a, CH3NH2, COa, HCPb, HNOa, NH, NH2, NO, O2, POb|
Notes. [X]i,x and [X]f,x correspond, respectively, to the initial and final abundances for the set of initial abundances x (A or B). We consider the total gas and ice abundances. On the last row, some molecules are found with both [X]i = [X]f and [X]i ≠ [X]f. The category depends on the set of initial abundances. To differentiate them, we used a for set A and b for set B. NH3 and HNC (within brackets) have been moved to a different category, as their initial abundances differ by almost an order of magnitude.
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