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HIGH-RESOLUTION SURFACE PHOTOMETRY OF MARKARIAN 231 IN THE U BAND
K. KODAIRA, S. OKAMURA and A. STOCKTON
Publications of the Astronomical Society of the Pacific
Vol. 99, No. 615 (May 1987), pp. 375-379
Published by: Astronomical Society of the Pacific
Stable URL: http://www.jstor.org/stable/40678905
Page Count: 5
You can always find the topics here!Topics: Luminosity, Spiral galaxies, Galaxies, Isophotes, Surface photometry, A giants, Red shift, Astronomical photometry, Nuclear structure, Printing plates
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Surface photometry of Markarian 231 has been obtained from high-resolution plates in the 17 band. The nuclear region (τ ≲ 10") is found to show a clear two-component structure. The two-dimensional luminosity distribution has been decomposed into the two nuclear components and the main body, and characteristic parameters have been derived for each component. The results of the present study suggest that the host galaxy of Mrk 231 is not a giant elliptical galaxy in the process of assimilating an irregular or late-type spiral galaxy, but a giant spiral galaxy disturbed by the tidal interaction.
Publications of the Astronomical Society of the Pacific © 1987 The University of Chicago Press