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V. Wakelam      June 2024 

kida.uva.2024
Gas-Phase Chemical network for interstellar chemistry in the tradition of the OSU database.
See Wakelam et al. (2024, A&A) for details

This network contains 7667 unique chemical reactions and in total 8278 rate coefficients. These reactions involve 584 different species. 
All the references used to construct this network are provided in an additional file in the bibtex format.

!!!!!!!!!!!!!!!!!!  FORMAT OF KIDA.UVA NETWORK !!!!!!!!!!!!!!!!!!!!!!!!!!!!

The format of the kida.uva file is the following :

Format: 3(a11),1x,5(a11),1x,3(e10.3,1x),e8.2,1x,e8.2,1x,a4,1x,i2,1x,i6,1x,i6,1x,i2,1x,i5,i2,i3
Reactants, Products, alpha, beta, gamma, F, g, Type_of_uncertainty, itype, Trange, Formula, Number, Numbers_of_(alpha, beta, gamma), Recommendation

-> alpha, beta, gamma are the parameters to compute the rate coefficients. The formula depends on the type of reaction. See https://kida.astrochem-tools.org/help.html

-> F is the uncertainty factor on the rate coefficient. g is the temperature dependence of this uncertainty factor. Type of uncertainty : lognormal (logn) , normal (norm) , loguniform (logu) , uniform (unit). (See https://kida.astrochem-tools.org/help.html)

-> Itype is the type of reaction (See https://kida.astrochem-tools.org/help.html)

-> Trange is the range of temperatures the rate coefficient is valid. Extrapolations outside this range has to be done with caution.. When we do not have information on Trange, default values are used: 0, 800K. When Trange is not relevant, we use: -9999,9999.

-> Formula is a number that refers to the formula needed to compute the rate coefficient of the reaction. 
1: Cosmic-ray ionization (direct and undirect)
2: Photo-dissociation (Draine)
3: Kooij 
4: ionpol1 
5: ionpol2 

Correspondances of the names to the mathematical expression can be found at this address: https://kida.astrochem-tools.org/help.html
Note that for photorates, the type of the UV field is contained in the name fo the formula. For example, Draine means standard interstellar radiation field cf Draine (1978, ApJS, 36,595 ). 

-> Number is the number of the reaction in the downloaded network.

-> Numbers of (alpha, beta, gamma) is the number of (alpha, beta, gamma) in the downloaded network when several values are present in KIDA. When a user selects a range of temperature and that several rate coefficients in KIDA can be in agreement with his/her search, all data will be included in the network. We then expect the user to choose one of the values. If the reactions are particularly important, we advise the user to contact KIDA to get advises. 
These reactions that are present more than once in the network are listed below. 

-> Recommendation is the recommendation given by experts in KIDA. 
1 means that there is no recommendation (experts have not looked at the data). 
2 means that the value has been validated by experts over the Trange
3 means that it is the recommended value over Trange.

!!!!!!!!!!!!!!!!!!  FORMAT OF KIDA.UVA SPECIES FILE !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Format of the file: a10 1x 23(i3) 1x i4  
Column 1: Species name  
Column 2:  Charge (0, +1, -1)   
Columns 3 to 16: number of each elements present in the species. Elements are the following: H, He, C, N, O, Si, S, Fe, Na, Mg, Cl, P, F
