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3D modelling of star-forming regions : the contribution of the graphical interface GASS to radiative transfer codes

Abstract : The era of interferometric observations leads to the need of a more and more precise description of physical structure and dynamics of star-forming regions, from pre-stellar cores to proto-planetary disks. The molecular and dust continuum emission can be described with multiple physical components. To compare with the observations, a precise and complex radiative transfer modelling of these regions is required. I have developed during this thesis a standalone application called GASS (Generator of Astrophysical Sources Structures, Quénard et al., submitted) for this purpose. Thanks to its interface, GASS allows to create, manipulate, and mix several different physical components such as spherical sources, disks, and outflows. In this thesis, I used GASS to work on different astrophysical cases and, among them, I studied in details the water and deuterated water emission in the pre-stellar core L1544 (Quénard et al., 2016) and the emission of ions in the low-mass proto-star IRAS16293-2422 (Quénard et al., submitted).
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David Quénard. 3D modelling of star-forming regions : the contribution of the graphical interface GASS to radiative transfer codes. Solar and Stellar Astrophysics [astro-ph.SR]. Université Paul Sabatier - Toulouse III, 2016. English. ⟨NNT : 2016TOU30232⟩. ⟨tel-01688045⟩

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