EVOLUTION OF THE NUCLEAR ACCRETION DISK EMISSION IN NGC 1097: GETTING CLOSER TO THE BLACK HOLE

@article{StorchiBergmann2003EVOLUTIONOT,
  title={EVOLUTION OF THE NUCLEAR ACCRETION DISK EMISSION IN NGC 1097: GETTING CLOSER TO THE BLACK HOLE},
  author={Thaisa Storchi-Bergmann and Rodrigo Nemmen and Michael Eracleous and Jules P. Halpern and Alexei V. Filippenko and Mar'ia Teresa Ruiz and Robert Connon Smith and Neil M. Nagar},
  journal={The Astrophysical Journal},
  year={2003},
  volume={598},
  pages={956-968}
}
We study the evolution of the broad, double-peaked Hα emission-line profile of the LINER/Seyfert 1 nucleus of NGC 1097, using 24 spectra obtained over a time span of 11 years—from 1991 November through 2002 October. While in the first 5 years the main variation was in the relative intensity of the blue and red peaks, in the last years we have also observed an increasing separation between the two peaks, at the same time as the integrated flux in the broad line has decreased. We propose a… Expand
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