New infrared observations of seyfert 2 galaxies and unification theories

M. Ruiz; G. H. Rieke; G. D. Schmidt

doi:10.1086/173838

New infrared observations of seyfert 2 galaxies and unification theories

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

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	608-613
Number of pages	6
Journal	Astrophysical Journal
Volume	423
Issue number	2
DOIs	https://doi.org/10.1086/173838
State	Published - Mar 10 1994

Keywords

Galaxies: Seyfert
Galaxies: active
Infrared: galaxies
Polarization

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/173838

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title = "New infrared observations of seyfert 2 galaxies and unification theories",

abstract = "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.",

keywords = "Galaxies: Seyfert, Galaxies: active, Infrared: galaxies, Polarization",

author = "M. Ruiz and Rieke, {G. H.} and Schmidt, {G. D.}",

year = "1994",

month = mar,

day = "10",

doi = "10.1086/173838",

language = "English (US)",

volume = "423",

pages = "608--613",

journal = "Astrophysical Journal",

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T1 - New infrared observations of seyfert 2 galaxies and unification theories

AU - Ruiz, M.

AU - Rieke, G. H.

AU - Schmidt, G. D.

PY - 1994/3/10

Y1 - 1994/3/10

N2 - 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.

AB - 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.

KW - Galaxies: Seyfert

KW - Galaxies: active

KW - Infrared: galaxies

KW - Polarization

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DO - 10.1086/173838

M3 - Article

AN - SCOPUS:12044256187

SN - 0004-637X

VL - 423

SP - 608

EP - 613

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

New infrared observations of seyfert 2 galaxies and unification theories

Abstract

Keywords

ASJC Scopus subject areas

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