Active galactic nuclei from He II: a more complete census of AGN in SDSS galaxies yields a new population of low-luminosity AGN in highly star-forming galaxies

@article{Bar2017ActiveGN,
  title={Active galactic nuclei from He II: a more complete census of AGN in SDSS galaxies yields a new population of low-luminosity AGN in highly star-forming galaxies},
  author={Rudolf Bar and Anna K. Weigel and Lia F. Sartori and Kyuseok Oh and Michael Koss and Kevin Schawinski},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2017},
  volume={466},
  pages={2879-2887}
}
  • Rudolf Bar, Anna K. Weigel, +3 authors Kevin Schawinski
  • Published 2017
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • In order to perform a more complete census of active galactic nuclei (AGN) in the local Universe, we investigate the use of the HeII~$\lambda 4685$ emission line diagnostic diagram by Shirazi & Brinchmann (2012) in addition to the standard methods based on other optical emission lines. The He II based diagnostics is more sensitive to AGN ionization in the presence of strong star formation than conventional line diagnostics. We survey a magnitude-limited sample of 63,915 galaxies from the Sloan… CONTINUE READING

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