SIMBAD references

2006ApJ...638..642B - Astrophys. J., 638, 642-652 (2006/February-3)

The first INTEGRAL AGN catalog.

BECKMANN V., GEHRELS N., SHRADER C.R. and SOLDI S.

Abstract (from CDS):

We present the first INTEGRAL AGN catalog, based on observations performed from launch of the mission in 2002 October until 2004 January. The catalog includes 42 AGNs, of which 10 are Seyfert 1, 17 are Seyfert 2, and 9 are intermediate Seyfert 1.5. The fraction of blazars is rather small, with five detected objects, and only one galaxy cluster and no starburst galaxies have been detected so far. A complete subset consists of 32 AGNs with a significance limit of 7 σ in the INTEGRAL ISGRI 20-40 keV data. Although the sample is not flux limited, the distribution of sources shows a ratio of obscured to unobscured AGNs of 1.5-2.0, consistent with luminosity-dependent unified models for AGNs. Only four Compton-thick AGNs are found in the sample. Based on the INTEGRAL data presented here, the Seyfert 2 spectra are slightly harder (Γ=1.95±0.01) than Seyfert 1.5 (Γ=2.10±0.02) and Seyfert 1 (Γ=2.11±0.05).

Abstract Copyright:

Journal keyword(s): Catalogs - Galaxies: Active - Galaxies: Seyfert - Gamma Rays: Observations - X-Rays: Galaxies

Simbad objects: 78

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2006ApJ...638..642B and select 'bookmark this link' or equivalent in the popup menu