1999A&A...352L...5M

Using the FORS1 focal reducer camera at the VLT UT1 (Antu) a multi-color surface photometry has been carried out for the southern Sc galaxies NGC 1232 and NGC 1288. Two-dimensional functions for the disk and the bulge were fitted to the surface-brightness distribution, yielding a high-precision disk-bulge decomposition. Nearly linear correlations for the characteristic scale parameters of disk and bulge in the different colors were found, as well as similar correlations for the central surface brightness of the disk and the effective surface brightness of the bulge. This seems to indicate that there exist connections between disk and bulge properties in spiral galaxies and their stellar density and population distributions.