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Home All issues Volume 658 (February 2022) A&A, 658 (2022) A168 Full HTML
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Table D.1

List of updated and new reactions added to the UGAN network.

Num Reaction α β γ Status Comment
s−1 K
1 NH S NS H 1.000E-10 0.000E+00 0.000E+00 New
2 SH N NS H 1.000E-10 0.000E+00 0.000E+00 New
3 NS N N2 S 4.000E-11 -2.000E-01 2.000E+01 New
4 NS O NO S 3.000E-11 0.000E+00 0.000E+00 New
5 NS C CN S 2.000E-10 0.000E+00 0.000E+00 New
6 NS C+ CS+ N 1.300E-09 -5.000E-01 0.000E+00 New (3)
7 NS C+ NS+ C 1.300E-09 -5.000E-01 0.000E+00 New (3)
8 NS H+ NS+ H 8.000E-09 -5.000E-01 0.000E+00 New (3)
9 NS He+ N+ S He 2.900E-09 -5.000E-01 0.000E+00 New (3)
10 NS He+ S+ N He 2.900E-09 -5.000E-01 0.000E+00 New (3)
11 NS H3+ HNS+ H2 4.800E-09 -5.000E-01 0.000E+00 New (3)
12 NS HCO+ HNS+ CO 2.000E-09 -5.000E-01 0.000E+00 New (3)
13 NS SECPHO‡ N S 3.000E+02 0.000E+00 0.000E+00 New (1)
14 N SH+ H NS+ 7.400E-10 0.000E+00 0.000E+00 New
15 N SO+ O NS+ 5.000E-11 0.000E+00 0.000E+00 New
16 N H2S+ H2 NS+ 7.900E-10 0.000E+00 0.000E+00 New
17 S H3+ SH+ H2 2.000E-09 0.000E+00 0.000E+00 Updated
18 S H2O+ OH SH+ 4.000E-10 0.000E+00 0.000E+00 New
19 S NH+ N SH+ 6.900E-10 0.000E+00 0.000E+00 New (3)
20 H2S H+ H2 SH+ 7.100E-10 -5.000E-01 0.000E+00 New
21 H2S H+ H H2S+ 4.000E-09 -5.000E-01 0.000E+00 Updated
22 H2O SH+ H3O+ S 2.300E-09 -5.000E-01 0.000E+00 Updated
23 SH+ H2 H3S+ PHOTON 1.400E-16 -6.000E-01 0.000E+00 Updated
24 HNS+ ELECTR NS H 3.000E-07 -5.000E-01 0.000E+00 New (3)
25 HNS+ Gr† NS Gr+ H 2.400E-07 5.000E-01 0.000E+00 New (2)
26 NS+ O NO+ S 6.100E-10 0.000E+00 0.000E+00 New
27 NS+ C CN S+ 6.000E-10 0.000E+00 0.000E+00 New
28 NS+ N N2 S+ 6.000E-10 0.000E+00 0.000E+00 New
29 NS+ ELECTR N S 2.000E-07 -5.000E-01 0.000E+00 New (3)
30 S NH+ H NS+ 6.900E-10 0.000E+00 0.000E+00 New (3)
31 S NH+ N SH+ 6.900E-10 0.000E+00 0.000E+00 New (3)

NOTES—All reaction rates were taken from KIDA2018 unless specified. The reaction rates are computed as , except for reactions with secondary photons (see Hily-Blant et al. 2018).

† The species denoted Gr and Gr+ are not involved in gas-grain chemistry but only in determining the charge of the gas.

‡ SECPHO are secondary photons;

(1) guess based on NO + SECPHO from Heays et al. (2017);

(2) guess based on HCS+ + Gr;

(3) Not validated by the KIDA committee (Wakelam et al. 2015).

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