出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：It is generally agreed that the rotational velocities of spiral galaxies indicate that a lot of matter is
unseen. Hitherto, the majority of these mass models are all based on spherical symmetry, although
this assumption is obviously not the one that is closest to reality. We present a new method to
derive dynamical mass models from HI-data based on an axisymmetric geometry. To validate our
method, we started a project with the aim to create such models from a combined sample of latetype
Low Surface Brightness galaxies and early-type High Surface Brightness spiral galaxies. The
whole sample spans a wide range of bulge-to-disk ratios and will ultimately allow us to investigate
the orbital distribution as a function of morphology.
