SIMBAD references

2005ApJ...631..720Y - Astrophys. J., 631, 720-726 (2005/October-1)

Dust morphology of hidden broad-line region and non-hidden broad-line region Seyfert 2 galaxies.

YU P.-C. and HWANG C.-Y.

Abstract (from CDS):

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 and non-HBLR Seyfert 2 galaxies are fitted with the Galfit package to probe the inner structures of these galaxies within the central 1 kpc regions. Most of the galaxies show complicated dust features in these regions. However, the dust morphology shows no significant difference between the HBLR and non-HBLR Seyfert 2 galaxies. Dust masses inside the 1 kpc nuclear regions (M1kpc) are estimated from the obscuration levels in the central regions of these galaxies. We compare our results with other observed properties, including [O III], far-infrared, and radio emission. We find that the HBLR and non-HBLR Seyfert 2 galaxies show different near-infrared colors and M1kpc-FIR correlations, indicating that these two classes of Seyfert 2 galaxies are dominated by different emission mechanisms. We suggest that they are intrinsically different and cannot be explained by the standard unification model.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Nuclei - Galaxies: Seyfert

Status at CDS:  

Simbad objects: 32

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