A Multi-wavelength MOCASSIN Model of the Magellanic-type Galaxy NGC 4449

(2) Mullard Space Science Laboratory; (3) CEA SAp; France); Holmbury St Mary; London; M. J. Barlow (1); M. J. Page (2); O. {\L}. Karczewski (1); Saclay; S. C. Madden (3) ((1) University College London

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A Multi-wavelength MOCASSIN Model of the Magellanic-type Galaxy NGC 4449

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arxiv 1112.2942 v1 pith:26BRX4DL submitted 2011-12-13 astro-ph.CO

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

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(3) CEA SAp Saclay France)

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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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