A photometric study of M104

Abstract

view Abstract Citations (60) References (34) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A photometric study of M 104. Burkhead, M. S. Abstract Surface photometry in UBVRI is presented for the galaxy M104 (NGC 4594). Galaxy luminosity is represented by an ellipsoid described by a modified Hubble law with a ratio of minor to major axis b/a constant (b/a = 0.639) from the nucleus to the inner edge of the dust lane (a is approximately 160 arcsec) and increasing to b/a = 1 at 500 arcsec. The underlying disk structure was found to be similar to other galaxy disks; it does not continue to the nucleus. Fitting parameters for the disk and ellipsoid are presented, and it is found that the colors for the two systems are nearly equal and very uniform. Nuclear image modification revealed a galaxy nuclear core possessing a minor-axis core radius of 0.83 arcsec. Magnitude and color profiles of the nucleus and dust lane are given, and no absorption by dust is evident within b = 5 arcsec. The integrated magnitude of the galaxy to a = 1200 arcsec (B = 27.8 mag/sq arcsec) is B = 8.71. To a = 500 arcsec, where the galaxy image becomes circular, the disk contributes 10 percent of the B light. Assuming a distance of 18.2 Mpc and an extinction correction of 0.12 mag, the absolute magnitude of the galaxy is -22.71 and the absolute magnitude of the disk is -19.93. Publication: The Astronomical Journal Pub Date: April 1986 DOI: 10.1086/114059 Bibcode: 1986AJ.....91..777B Keywords: Astronomical Photometry; Elliptical Galaxies; Galactic Radiation; Astronomical Maps; Cosmic Dust; Galactic Structure; Magnitude; Ubv Spectra; Astrophysics full text sources ADS | data products SIMBAD (3) NED (1)