# Hidden Broad-Line Seyfert 2 Galaxies in the CfA and 12 μm Samples

@article{Tran2001HiddenBS,
title={Hidden Broad-Line Seyfert 2 Galaxies in the CfA and 12 $\mu$m Samples},
author={Hien D. Tran},
journal={The Astrophysical Journal Letters},
year={2001},
volume={554},
pages={L19 - L23}
}
• H. Tran
• Published 25 May 2001
• Physics
• The Astrophysical Journal Letters
We report the results of a spectropolarimetric survey of the CfA and 12 μm samples of Seyfert 2 (S2) galaxies. Polarized (hidden) broad-line regions (HBLRs) are confirmed in a number of galaxies, and several new cases (F02581-1136, MCG -3-58-7, NGC 5995, NGC 6552, NGC 7682) are reported. The 12 μm S2 galaxy sample shows a significantly higher incidence of HBLRs (50%) than its CfA counterpart (30%), suggesting that the latter may be incomplete in hidden active galactic nuclei. Compared to the…
• Physics
• 2002
We present a compilation of radio, infrared, optical, and hard X-ray (2-10 keV) data for a sample of 90 Seyfert 2 galaxies (Sy2s) with spectropolarimetric observations (41 Sy2s with detection of
We present a study of the local environment (≤200 h −1 kpc) of 31 hidden broad line region (HBLR) and 43 non-HBLR Seyfert 2 (Sy2) galaxies in the nearby universe (z ≤ 0.04). To compare our findings,
• Physics
• 2008
New XMM-Newton data of seven Seyfert 2 galaxies with optical spectropolarimetric observations are presented. An analysis of the 0.5–10 keV spectra shows that four Seyfert 2 galaxies with polarized
• Physics
• 2005
We investigate the nuclear dust properties of hidden broad-line region (HBLR) and non-HBLR Seyfert 2 galaxies. Optical images obtained from the Hubble Space Telescope for a selected sample of HBLR
• Physics
• 2015
We analyse the mid-infrared (MIR) spectra of 39 Seyfert galaxies observed with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope. Our sample consists of 19 Seyfert type 1 (Sy1)
• Physics
• 2011
We present a multi-waveband analysis of a 126-galaxy sub-sample of the 12 μm galaxy sample ( 12MGS), for which we have carried out a detailed X-ray spectral analysis in a previous paper. We determine
• Physics
• 2003
We present sub-arcsec near-infrared 1.5 – 2.5 µm moderate resolution long-slit spectra of eight nearby Seyfert galaxies (z <0.01), both parallel to the ionization cone and perpendicular to it. These
• Physics
• 2009
We study the nature of the extended near-UV emission in the inner kiloparsec of a sample of 15 Seyfert (Sy) galaxies which have both near-UV (F330W) and narrow-band [O iii] high-resolution Hubble
• Physics
• 2006
Aims. It is well known that the [O iii]λ5007 emission line and hard X-ray (2−10 keV) luminosities are good indicators of AGN activities and that the near and mid-infrared emission of AGN originates
• Physics
• 2009
We have examined the physical conditions within a bright emission-line knot in the inner narrow-line region (NLR) of the Seyfert 2 galaxy Mrk 573 using optical spectra and photoionization models. The

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