Far-red surface photometry of the X-ray emitting BL Lacertae object PKS 0548-322

Abstract

view Abstract Citations (21) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Far-red surface photometry of the X-ray emitting BL Lacertae object PKS 0548-322. Weistrop, D. ; Smith, B. A. ; Reitsema, H. J. Abstract Surface photometry of the X-ray emitting BL Lac object PKS 0548-322 at V, 0.75 i m, and 1.01 m is presented. The observations can be reproduced by models consisting of a point source plus elliptical galaxy with de Vaucouleurs intensity distribution. The absolute magnitude Mv = -22.1 mag and spectral flux distribution of the galaxy indicate that it is a giant elliptical. The visible and far-red spectral index of the point source is a = 0.3 + 0.2, where Fv V - a The spectral flux distribution in the radio, optical, and high-energy X-ray regions suggests the radio and optical radiation is due to synchrotron emission, while the high-energy X-ray flux may be due to inverse Compton scattering. Subject headings: BL Lacertae objects - galaxies: nuclei - galaxies: photometry - synchrotron radiation - X-rays: sources Publication: The Astrophysical Journal Pub Date: October 1979 DOI: 10.1086/157410 Bibcode: 1979ApJ...233..504W Keywords: Astronomical Photometry; Bl Lacertae Objects; Synchrotron Radiation; X Ray Sources; Compton Effect; Elliptical Galaxies; Galactic Nuclei; Radiant Flux Density; Spectral Energy Distribution; Astronomy; BL Lacertae Objects:Surface Photometry; BL Lacertae Objects:Synchrotron Radiation; BL Lacertae Objects:X Rays full text sources ADS |