New Infrared Observations of Seyfert 2 Galaxies and Unification Theories

Details New Infrared Observations of Seyfert 2 Galaxies and Unification Theories New Infrared Observations of Seyfert 2 Galaxies and Unification Theories

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...423..608r&link_type=abstract

Astrophysical Journal v.423, p.608

Astronomy and Astrophysics

Astronomy

48

Galaxies: Active, Galaxies: Seyfert, Infrared: Galaxies, Polarization

Scientific paper

We present infrared spectroscopy of He 1 1.083 microns and Paβ for a sample of nine Seyfert 2 galaxies. These galaxies were selected for strong emission at ˜3 microns 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.

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