Evidence for an accretion disc in AKN 120

Details Evidence for an accretion disc in AKN 120 Evidence for an accretion disc in AKN 120

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...200...17a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 200, no. 1-2, July 1988, p. 17-20.

Astronomy and Astrophysics

Astronomy

42

Accretion Disks, Active Galactic Nuclei, Balmer Series, Black Holes (Astronomy), Line Shape, Emission Spectra, Iue, Line Spectra

Scientific paper

The geometry of the broad line region in Akn 120 is discussed. The Balmer and C IV line profiles at two light-months from the center are derived, taking advantage of the variability properties of Akn 120. A quantitative analysis of these profiles reveals that the broad-line region is made of two distinct regions. One in particular appears as a disklike structure, a couple of light-months in size, which is interpreted as an accretion disk orbiting a massive object. The characteristics of this disk line emission provide constraints on the inclination of the disk, i not greater than 60 deg, and on the mass of the central object M(BH) not less than 7 x 10 to the 7th solar masses.

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