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Table 1

Parameters of the model and their fiducial values.

Parameter Units Range Fiducial
Shape of the UV field . See text Lyα
Φ ≡ N(H2O)k cm−2 s−1 104–1010 107
N(OH) cm−2 1012–1016 1014
nH cm−3 105–1013 107
TK K 500
TIR K 50, 120 120

s−1 10−12–10−2 10−7

Notes. (1) the chemical pumping rate is not considered as a free parameter here since OH).

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