New infrared observations of seyfert 2 galaxies and unification theories

M. Ruiz, George H. Rieke, G. D. Schmidt

Research output: Contribution to journalArticle

44 Scopus citations


We present infrared spectroscopy of He I 1.083 μm and Paβ for a sample of nine Seyfert 2 galaxies. These galaxies were selected for strong emission at ∼3 μm and spectral energy distributions similar to type 1 Seyferts. We find broad emission lines components (FWHM ∼1500 km s-1) in six galaxies of our sample and evidence for strong dust obscuration. Spectropolarimetry of Mrk 334 reveals that scattering screens are not a universal component of the broad-line region in Seyfert galaxies. The overall results show that the portion of Seyfert 1 galaxies is underestimated significantly in optically based studies and support current unified models for active galactic nuclei.

Original languageEnglish (US)
Pages (from-to)608-613
Number of pages6
JournalAstrophysical Journal
Issue number2
Publication statusPublished - Mar 10 1994



  • Galaxies: active
  • Galaxies: Seyfert
  • Infrared: galaxies
  • Polarization

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this