The shape of dark matter haloes - II. The GALACTUS HI modelling & fitting tool
Peters, S. P C; van der Kruit, P C; Allen, R J; Freeman, Kenneth
We present a new HI modelling tool called GALACTUS. The program has been designed to perform automated fits of disc-galaxy models to observations. It includes a treatment for the self-absorption of gas. The software has been released into the public domain.We describe the design philosophy and inner workings of the program. After this, we model the face-on galaxy NGC 2403 using both self-absorption and optically thin models, showing that self-absorption occurs even in face-on galaxies. These...[Show more]
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|Source:||Monthly Notices of the Royal Astronomical Society|
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