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Some brief explanations

• This utility allows to estimate the consequences ram pressure stripping of a galaxy - described by its parameters - in the long pulse limit, i.e. when the duration and the time scale for the ram pressure pulse are long compared to the period for vertical oscillations of matter in the galactic plane.
• In the long pulse limit the outcome depends on the maximum ram pressure that the galaxy has been subjected to (also known as the Gunn & Gott criterion). As a function of this maximum value we show the stripping radius - the outer radius of the gas remeining in the disk, the stripped mass fraction, and the deficiency (= log10(initial gas mass/remaining gas mass)).
• The gas column density follows an exponential profile of specified column density at the centre and a radial scale.
• Alternatively, one may select Bernd Vollmers's recipe, where the column density to compute the stripping radius follows a different formula, which takes into account the presence of molecular clouds in the inner part of the gas disk.
• Hit the Enter key to recompute the mass and density; this will not draw the corresponding curve ... which is done by the plot/overplot buttons.