fiesta.properties.calc_chem_density#
- fiesta.properties.calc_chem_density(chem, ndens, unit=Unit('1 / cm3'))[source]#
Calculates chemical densities \(n_\mathrm{HI}\), \(n_\mathrm{H^+}\), \(n_\mathrm{H_2}\), \(n_\mathrm{CO}\), \(n_\mathrm{tot}\).
- Parameters:
chem (
Quantity
) – See variablechem
inArepoVoronoiGrid
.ndens (
Quantity
) – Number density \(n\).unit (
Unit
, optional) – Unit to output the result in. Default value isu.cm**-3
.
- Returns:
nHI (
Quantity
) – Neutral hydrogen number density \(n_\mathrm{HI}\).nHp (
Quantity
) – Ionized hydrogen number density \(n_\mathrm{H^+}\).nH2 (
Quantity
) – Molecular hydrogen number density \(n_\mathrm{H_2}\).nCO (
Quantity
) – CO number density \(n_\mathrm{CO}\).nTOT (
Quantity
) – Total number density \(n_\mathrm{tot}\).