Hostname: page-component-5c6d5d7d68-thh2z Total loading time: 0 Render date: 2024-08-18T14:48:05.772Z Has data issue: false hasContentIssue false
  • English
  • Français

Velocity-Resolved Echo Mapping

Published online by Cambridge University Press:  12 April 2016

K. Horne
K. Horne*
Affiliation:
School of Physics and Astronomy, North Hough, St. Andrews KY16 9SS, Scotland, UK

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We probe the structure and kinematics of Seyfert broad-line regions by using a velocity-delay map to fit simultaneously the observed variations in the continuum and the emission-line profiles. The velocity-delay map of C IVλ1550 emission constructed from 44 IUE spectra of NGC 4151 suggests virial motions, with 107M⊙ inside two light days. Pure inflow and outflow kinematics are ruled out by the approximate symmetry of the map. A stronger redshifted response at small delays suggests either a component with free-fall kinematics, or an outflow with CIV being emitted inward by optically thick gas clouds.

Type
III. Broad-Line Profiles and Variability
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 146 - 150
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Done, C., & Krolik, J. 1996, ApJ, 463, 144.Google Scholar
Ferland, G.J., Peterson, B.M., Horne, K., Welsh, W.F., & Nahar, S.N. 1992, ApJ, 387, 95.CrossRefGoogle Scholar
Horne, K. 1994, in Reverberation Mapping of the Broad-Line Region in Active Galactic Nuclei, ed. Gondhalekar, P.M., Horne, K., & Peterson, B.M. (ASP: San Francisco), 23.Google Scholar
Horne, K., Welsh, W.F., & Peterson, B.M. 1991, ApJL, 367, L5.CrossRefGoogle Scholar
O’Brien, P.T., Goad, M.R., & Gondhalekar, P.M. 1994, MNRAS, 268, 845.Google Scholar
Peterson, B.M., Ali, B., Horne, K., Bertram, R., Lame, N.J., Pogge, R.W., & Wagner, R.M. 1993, ApJ, 402, 469.Google Scholar
Pérez, E., Robinson, A., & de la Fuente, L. 1992, MNRAS, 256, 103.Google Scholar
Krolik, J.H., Horne, K., Kallman, T.R., Malkan, M.A., Edelson, R.A., & Kriss, G.A. 1991, ApJ, 371, 541.Google Scholar
Ulrich, M.-H., & Horne, K. 1996, MNRAS, in press.Google Scholar
Wanders, I., & Horne, K. 1994, A&A, 289, 76.Google Scholar
Wanders, I., Goad, M.R., Korista, K.T., Peterson, B.M., Horne, K., Ferland, G.J., Koratkar, A.P., Pogge, R.W., & Shields, J.C. 1995, ApJL, 453, L87.CrossRefGoogle Scholar
Welsh, W.F., & Horne, K. 1991, ApJ, 379, 586.Google Scholar