Monitoring of active galactic nuclei. VI. The quasar MKN 876.

U. Erkens, S. J. Wagner, D. Alloin, D. Axon, A. G. de Bruyn, J. Clavel, M. R. Goad, P. Gondhalekar, E. van Groningen, N. Jackson, W. Kollatschny, E. Laurikainen, A. Lawrence, J. Masegosa, P. O'Brien, M. V. Penston, E. Perez, I. Perez-Fournon, A. Robinson, J. M. Rodriguez EspinosaG. M. Stirpe, C. Tadhunter, R. Terlevich, S. Unger

Research output: Contribution to journalArticlepeer-review

Abstract

We present the results of a 6 month monitoring campaign of Mkn 876, a low luminosity quasar with M_abs_=~-24. High resolution spectroscopy and direct imaging in the Johnson filters B, V, R, I was carried out in the first half of 1990. Line and continuum light curves are presented. Mkn 876 showed a decrease of 17% in the continuum over the whole observing period whereas the line flux of Hβ and Hα stayed constant. This implies, that the radius of the Broad Line Region is larger than 6 light months. Coadded spectra of Hβ and Hα are presented which confirm an extreme asymmetry of the line profiles to the red. With respect to much earlier spectra the line profiles changed considerably.
Original languageEnglish
Pages (from-to)90
JournalAstronomy and Astrophysics
Volume296
Publication statusPublished - 1 Apr 1995

Keywords

  • GALAXIES: INDIVIDUAL: MKN 876
  • GALAXIES: SEYFERT
  • QUASARS: GENERAL
  • LINES: PROFILE

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