New bright soft X-ray selected ROSAT AGN II. Optical emission line properties
Astrophysics
2007-05-23 v1
Abstract
We present the emission line properties of a sample of 76 bright soft X-ray selected ROSAT Active Galactic Nuclei. All optical counterparts are Seyfert 1 galaxies with rather narrow permitted lines, strong optical FeII line blends, and weak forbidden lines. By selection, they also have steep soft X-ray spectra when compared with typical Seyfert 1 galaxies. We discuss possible origins of these peculiar trends employing detailed correlation analyses, including a Principal Component Analysis. The optical spectra are presented in the Appendix.
Cite
@article{arxiv.astro-ph/9908347,
title = {New bright soft X-ray selected ROSAT AGN II. Optical emission line properties},
author = {D. Grupe and K. Beuermann and K. Mannheim and H. -C. Thomas},
journal= {arXiv preprint arXiv:astro-ph/9908347},
year = {2007}
}
Comments
13 pages, 5 figures, the paper included all spectra is available at http://www.xray.mpe.mpg.de/~dgrupe/research/refereed.html