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American Astronomical Society, Astrophysical Journal, 1(721), p. 715-737, 2010

DOI: 10.1088/0004-637x/721/1/715

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Reverberation Mapping Measurements of Black Hole Masses in Six Local Seyfert Galaxies

Journal article published in 2010 by Kd D. Denney, Bm M. Peterson, Rw W. Pogge, A. Adair, Dw W. Atlee, K. Au-Yong, Mc C. Bentz, Jc C. Bird, Dj J. Brokofsky, M. L. Comins, E. Chisholm, M. Dietrich, V. T. Doroshenko, J. D. Eastman ORCID, Y. S. Efimov and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present the final results from a high sampling rate, multi-month, spectrophotometric reverberation mapping campaign undertaken to obtain either new or improved Hbeta reverberation lag measurements for several relatively low-luminosity AGNs. We have reliably measured thetime delay between variations in the continuum and Hbeta emission line in six local Seyfert 1 galaxies. These measurements are used to calculate the mass of the supermassive black hole at the center of each of these AGNs. We place our results in context to the most current calibration of the broad-line region (BLR) R-L relationship, where our results remove outliers and reduce the scatter at the low-luminosity end of this relationship. We also present velocity-resolved Hbeta time delay measurements for our complete sample, though the clearest velocity-resolved kinematic signatures have already been published. ; Comment: 52 pages (AASTeX: 29 pages of text, 8 tables, 7 figures), accepted for publication in the Astrophysical Journal