NebularContinuumEmission Class Reference

#include <NebularContinuumEmission.hpp>

Static Public Member Functions
static double	continuumLuminosity (double lambda_m, double T, double ne, double nHII, double nHeII, double nHeIII, double V_cm3)

Detailed Description

The NebularContinuumEmission class provides functions for computing the nebular continuum emission spectrum (free-bound, free-free, and two-photon) from ionized hydrogen and helium.

The implementation follows McClymont, Smith & Tacchella (2025), which is based on NEBULAR (Schirmer 2016):

• Free-bound: Ercolano & Storey (2006) recombination coefficients for HI, HeI, HeII
• Free-free: van Hoof et al. (2014) thermally averaged Gaunt factors with 3rd-order Lagrange interpolation on an 81x146 grid in log(gamma^2) x log(u)
• Two-photon: Nussbaumer & Schmutz (1984) spectral shape with Hummer & Storey (1987) effective recombination rates and Pengelly & Seaton (1964) collisional de-excitation

All internal component functions and coefficient tables are file-local to the implementation translation unit; only the full-spectrum entry point is exposed.

Member Function Documentation

continuumLuminosity()

double NebularContinuumEmission::continuumLuminosity ( double lambda_m, double T, double ne, double nHII, double nHeII, double nHeIII, double V_cm3 )

static

Compute the full nebular continuum emissivity at wavelength lambda [m] for a cell with: T [K], ne [cm^-3], nHII [cm^-3], nHeII [cm^-3], nHeIII [cm^-3], V [cm^3]. Returns luminosity per unit wavelength [W/m] at this wavelength. This is what SKIRT's emissionSpectrum() should return for each wavelength bin.

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The documentation for this class was generated from the following file:

• NebularContinuumEmission.hpp