SIMBAD references

We present the analysis of a CCD survey of 31 nearby (≤110Mpc) edge-on spiral galaxies. The three-dimensional one-component best fit models provide their disk-scalelengths h and for the first time their disk cut-off radii R_co. We confirm for this sample the existence of such sharp truncations, and find a significantly lower mean value of the distance independent ratio R_co/h=2.9±0.7 than the standard value of 4.5 often used in the literature. Our data show no correlation of these parameters with Hubble type, whereas we report a correlation between R_co/h and the distance based scalelength in linear units. Compared to the Milky Way we find only lower values of R_co/h, explained either by possible selection effects or by the completely different techniques used. We discuss our data in respect to present models for the origin of the cut-off radii, either as a relict of the galaxy formation process, or as an evolutionary phenomenon.