Gas Cooling and Ionization Rates for Redshifts 0 to 9

HDF5 files contain cooling and heating rates, ion fractions, free electron fractions, and molecule abundances for gas across redshifts from 0 to 9. The data covers hydrogen number densities between 10^{-8} and 10^{6} cm^{-3}, temperatures from 10 to 10^{9.5} K, and metallicities up to log10(Z/Zsol)=0.5. It was created by Sylvia Ploeckinger of Leiden University.

Use Cases

• Modeling galaxy formation based on gas cooling rates across cosmic time.
• Simulating the interstellar medium using ion and molecule abundance data.
• Analyzing the impact of dust, cosmic rays, and radiation fields on gas properties.
• Calibrating cosmological simulations with detailed heating and cooling functions.

Strengths

• Covers a wide parameter space: redshifts from 0 to 9, densities from 10^{-8} to 10^{6} cm^{-3}, and temperatures from 10 to 10^{9.5} K.
• Provides multiple physical variables: cooling/heating rates, ion fractions, free electron fractions, and molecule abundances.
• Variants exist for different physical conditions, including dust, cosmic rays, and radiation fields.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Sylvia Ploeckinger, Leiden University

Collection Method

Likely generated from astrophysical simulations or models.

Time Range

Redshifts between 0 and 9.