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Table 1

Input parameters for the grid of the photoionised H ii region models.

Parameter Value

log Q(H)a 52, 53, 54
Starburst age, Myr 1.0, 2.0, 3.5, 4.0
N e b 10, 102, 103, var
log fc −0.5, −1.0, −1.5, −2.0
Oxygen abundance 12+log O/H 7.3, 7.6, 8.0, 8.3
4He mass fraction Y 0.254



Log of the number of ionising photons in units s-1.


The electron number density in units cm-3. The electron number density in models labelled “var” is varied along the radius according to Eq. (1).


Log of volume-filling factor.

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