The Mass of the Central Black Hole in the Seyfert Galaxy NGC 3783

Details The Mass of the Central Black Hole in the Seyfert Galaxy NGC 3783 The Mass of the Central Black Hole in the Seyfert Galaxy NGC 3783

2002-02-20

arxiv.org/abs/astro-ph/0202382v2

Astronomy and Astrophysics

Astrophysics

19 pages, 6 figures, accepted for publication in ApJ

Scientific paper

10.1086/340351

Improved analysis of ultraviolet and optical monitoring data on the Seyfert 1 galaxy NGC 3783 provides evidence for the existence of a supermassive, (8.7+/-1.1)x10^6 M_sun, black hole in this galaxy. By using recalibrated spectra from the International Ultraviolet Explorer satellite and ground-based optical data, as well as refined techniques of reverberation mapping analysis, we have reduced the statistical uncertainties in the response of the emission lines to variations in the ionizing continuum. The different time lags in the emission line responses indicate a stratification in the ionization structure of the broad-line region and are consistent with the virial relationship suggested by the analysis of similar active galaxies.

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