view Abstract Citations (6) References (16) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Surface photometry of Virgo cluster galaxies NGC 4321. Benedict, G. F. Abstract A procedure to obtain B and V photographic surface photometry of Virgo Cluster galaxies utilizing the well-observed cD galaxy M87 (N4486) as a calibration source is discussed. Luminosity and color profiles and standard photometric parameters for the galaxy N432 1 [SAB (s)bc] are presented. The colors and surface magnitudes of the two major spiral arms are sampled at 14 points from r =0.08 to r =4.0 arcmin. The data suggest that for the spiral component of N432 1 the luminosity generally decreases with r while the color index is low near the center, peaks broadly, and then slowly decreases with r. Publication: The Astronomical Journal Pub Date: February 1976 DOI: 10.1086/111857 Bibcode: 1976AJ.....81...89B Keywords: Astronomical Photometry; Galactic Clusters; Luminous Intensity; Ubv Spectra; Virgo Galactic Cluster; Calibrating; Error Analysis; Galactic Structure; Microdensitometers; Spiral Galaxies; Astronomy full text sources ADS | data products NED (1)