Abstract.
It is well-known that the low surface brightness (LSB) galaxies are
gas-rich and yet have a very low star formation rate. The particular
case of UGC 7321 will be discussed where high gas dispersion, as
deduced from our dynamical study, is argued to be responsible for
the low star formation rate. This article highlights some of the
dynamical issues including the low star formation seen in the LSB
galaxies, and points out the open problems in this topic.
Key words: galaxies: halos -- galaxies: individual -- UGC 7321 --
galaxies: kinematics and dynamics -- stars : formation