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The influence of clumping on surface brightness fits of edge-on spiral galaxies | | A. Misiriotis & S. Bianchi
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17 Dec 2001 | | Subject: | astro-ph | | Abstract: | We have used a Monte Carlo radiative transfer code to produce edge-on images of dusty galactic disks, allowing a fraction of the dust to be distributed in clumps. Synthetic images of edge-on galaxies have been constructed for different amounts of dust, distributions of clumps and fractions of dust in clumps, following the formalism of Bianchi et al. (1999). We have also considered models with stellar emission embedded in the clumps. The synthetic images have been fitted with analytical models made with smooth distributions of dust, adopting the procedure developed by Xilouris et al. (1999) to fit optical images of real edge-on galaxies. We have compared the parameters determined by the fit with the input parameters of the models. For the clumping distributions adopted in this paper, the neglect of clumping results in underestimating the amount of dust in a galaxy. However, the underestimation is never larger than 40%. | | Source: | arXiv, astro-ph/0201287 | | Services: | Forum | Review | PDF | Favorites | |
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