A Multi-wavelength MOCASSIN Model of the Magellanic-type Galaxy NGC 4449
O. {\L}. Karczewski (1), M. J. Barlow (1), M. J. Page (2), S. C., Madden (3) ((1) University College London, London, UK, (2) Mullard Space, Science Laboratory, Holmbury St Mary, UK, (3) CEA SAp, Saclay, France)
TL;DR
This paper presents a comprehensive multi-wavelength model of the dwarf galaxy NGC 4449 using the MOCASSIN code, successfully reproducing its optical emission lines and spectral energy distribution from UV to sub-mm wavelengths.
Contribution
It introduces a detailed multi-wavelength radiative transfer model of NGC 4449, integrating photoionisation and dust emission to match observed data.
Findings
Model accurately reproduces optical emission line fluxes.
Spectral energy distribution from UV to sub-mm is well fitted.
Derived stellar luminosity and dust properties are consistent with observations.
Abstract
We use the photoionisation and dust radiative transfer code MOCASSIN to create a model of the dwarf irregular galaxy NGC 4449. The best-matching model reproduces the global optical emission line fluxes and the observed spectral energy distribution (SED) spanning wavelengths from the UV to sub-mm, and requires the bolometric luminosity of 6.25e9 Lsolar for the underlying stellar component, M_d/M_g of 1/680 and M_d of 2.2e6 Msolar.
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