At close inspection every galaxy appears to have its own individuality.A
galaxy can be warped, lop-sided, doubly-nucleated, boxy or disky, ... in
its own specific, peculiar way. Hence, for a complete description,
galaxy taxonomy may ask for finer and finer classification schemes.
However, for some applications it may be more fruitful to let details
aside and focus on some global properties of galaxies. One is then
seeking to measure just a few quantities for each galaxy, a minimum set
of globalobservables that yet captures some essential aspect of these
objects. One very successful example of this approach is offered by the
scaling rela- tions of galaxies, the subject of the international
workshop held at ESO head- quarters in Garching on November 19-21, 1996.
Discovered in the late 1970's, the Tully-Fisher relation for the spirals
and the Faber-Jackson relation, or its more recent version the
Fundamental Plane, for ellipticals have now become flourishing fields of
astronomical research in their own right, as well as being widely used
tools for a broad range of astronomical investigations. The work- shop
was designed to address three key issues on galaxy scaling relations,
i.e., their Origins, Evolution, and Applications in astronomy. The
Origins of galaxy scaling relations still escape our full understanding.