Multicolor CCD photometry of six lenticular and spiral galaxies. Structure of the galaxies

摘要

The results Of multicolor Surface photometry of the S0 galaxies NGC 524, NGC 1138, and NGC 7280 and the spiral galaxies NGC 532, NGC 783, and NGC 1589 are reported. UBV RI observations were acquired with the 1.5-m telescope of the Maidanak Observatory (Uzbekistan), while JHK data were taken from the 2MASS catalog. The overall structure of the galaxies is analyzed and the galaxy images decomposed into bulge and disk components. The parameters of the galaxy components-rings, bars, spiral arms, and dust lanes-are determined. The bulge/disk decompositions based on averaged one-dimensional photometric profiles yield incorrect parameters for the bulges Of the S0-Sa galaxies with bars aud/or rings, whose inner regions are dominated by the radiation of the bulge.