HII-CHI-mistry

HII-CHI-mistry is a collection of python subroutines aimed at the calculation of chemical abundances and physical properties using emission line fluxes from ionized gaseous nebulae. A complete description and instructions can be downloaded from here. The code and the different papers can also be inspected in github. These are the available different versions:

• HII-CHI-mistry . Calculation of oxygen, nitrogen-to-oxygen ratio chemical abundances and ionization parameter using optical emission lines both for massive clusters and for Narrow Line Regions of Seyfert 2 galaxies.
• HII-CHI-mistry-UV . Calculation of oxygen, carbon-to-oxygen chemical abundances and ionization parameter using ultraviolet emission lines.
• HII-CHI-mistry-IR . Calculation of oxygen, nitrogen-to-oxygen chemical abundances and ionization parameter using infra-red emission lines.
• HII-CHI-mistry-Teff . Calculation of the equivalent effective temperature of the ionizing source and the ionization parameter using UV and optical emission lines and the metallicity, if available, as inputs. Alternatively it can be used to derive the fraction of absorbed ionizing photons.

Enrique Pérez-Montero. IAA-CSIC
Last update: 2023, April

This program has been made thanks to the financial support from the Spanish AYA project Estallidos