The mass of the black hole in the Seyfert 1 galaxy NGC 4593 from reverberation mapping

Kelly D. Denney, Misty C. Bentz, Bradley M. Peterson, Richard W. Pogge, Edward M. Cackett, Matthias Dietrich, Jeffrey K. J. Fogel, Himel Ghosh, Keith D. Horne, Charles Kuehn, Takeo Minezaki, Christopher A. Onken, Vladimir I. Pronik, Douglas O. Richstone, Sergey G. Sergeev, Marianne Vestergaard, Matthew G. Walker, Yuzuru Yoshii

Research output: Contribution to journalArticlepeer-review

104 Citations (Scopus)

Abstract

We present new observations leading to an improved black hole mass estimate for the Seyfert 1 galaxy NGC 4593 as part of a reverberation-mapping campaign conducted at the MDM Observatory. Cross-correlation analysis of the Ho emission-line light curve with the optical continuum light curve reveals an emission-line time delay of tau(cent) = 3.73 +/- 0.75 days. By combining this time delay with the H beta line width, we derive a central black hole mass of M-BH = (9.8 +/- 2. 1) x 10(6) M circle dot, an improvement in precision of a factor of several over past results.

Original languageEnglish
Pages (from-to)152-158
Number of pages7
JournalAstrophysical Journal Letters
Volume653
DOIs
Publication statusPublished - 10 Dec 2006

Keywords

  • galaxies : active
  • galaxies : nuclei
  • galaxies : Seyfert
  • ACTIVE GALACTIC NUCLEI
  • LINE REGION SIZES
  • DUST TORUS
  • EMISSION
  • VARIABILITY
  • NGC-4151
  • NGC-5548
  • PROJECT

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