SIMBAD references

2004AJ....127..156G - Astron. J., 127, 156-179 (2004/January-0)

A complete sample of soft X-Ray-Selected AGNs. I. The data.

GRUPE D., WILLS B.J., LEIGHLY K.M. and MEUSINGER H.

Abstract (from CDS):

We present the optical spectra and simple statistical analysis for a complete sample of 110 soft X-ray-selected AGNs. About half of the sources are narrow-line Seyfert 1 galaxies (NLS1's), which have the steepest X-ray spectra, the strongest Fe II emission, and slightly weaker [O III] λ5007 emission than broad-line Seyfert 1's (BLS1's). Kolmogorov-Smirnov tests show that NLS1's and BLS1's have clearly different distributions of the X-ray spectral slope αX, X-ray short-term variability, and Fe II equivalent widths and luminosity and Fe II/Hβ ratios. The differences in the [O III]/Hβ and [O III] equivalent widths are only marginal. We found no significant differences between NLS1's and BLS1's in their rest-frame 0.2-2.0 X-ray luminosities, rest-frame 5100 monochromatic luminosities, bolometric luminosities, redshifts, and their Hβ equivalent widths.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - Galaxies: Quasars: General

VizieR on-line data: <Available at CDS (J/AJ/127/156): table1.dat table2.dat table3.dat>

Simbad objects: 112

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