2005A&A...439...85E


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.27CET11:36:12

2005A&A...439...85E - Astronomy and Astrophysics, volume 439, 85-91 (2005/8-3)

ISO observations and models of galaxies with hidden broad line regions.

EFSTATHIOU A. and SIEBENMORGEN R.

Abstract (from CDS):

We present ISO mid-infrared spectrophotometry and far-infrared photometry of galaxies with Hidden Broad Line Regions (HBLR). We also present radiative transfer models of their spectral energy distributions which enable us to separate the contributions from the dusty disc of the AGN and the dusty starbursts. We find that the combination of tapered discs (discs whose thickness increases with distance from the central source in the inner part but stays constant in the outer part) and starbursts provide good fits to the data. The tapered discs dominate in the mid-infrared part of the spectrum and the starbursts in the far-infrared. After correcting the AGN luminosity for anisotropic emission we find that the ratio of the AGN luminosity to the starburst luminosity, LAGN/Lsb, ranges from about unity for IRAS 14454-4343 to about 13 for IRAS 01475-0740. Our results suggest that the warm IRAS colours of HBLR are due to the relatively high LAGN/Lsb. Our fits are consistent with the unified model and the idea that the infrared emission of AGN is dominated by a dusty disc in the mid-infrared and starbursts in the far-infrared.

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Journal keyword(s): galaxies: active - infrared: galaxies - radiative transfer

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ICRF J015002.6-072548 Sy2 01 50 02.6969570114 -07 25 48.474391488   16.86 15.62 15.62   ~ 137 0
2 M 77 GiP 02 42 40.771 -00 00 47.84 9.70 9.61 8.87 10.1 9.9 ~ 4162 2
3 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5411 6
4 ESO 273-4 Sy2 14 48 40.5 -43 56 07   15.67 14.72     ~ 36 0
5 3C 321 Sy2 15 31 43.473 +24 04 18.93   16.0   15.40   ~ 310 1
6 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 400 2

    Equat.    Gal    SGal    Ecl

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2021.01.27-11:36:12

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