New bright soft X-ray selected ROSAT AGN II. Optical emission line properties

Details New bright soft X-ray selected ROSAT AGN II. Optical emission line properties New bright soft X-ray selected ROSAT AGN II. Optical emission line properties

1999-08-31

arxiv.org/abs/astro-ph/9908347v1

Astron.Astrophys. 350 (1999) 805-815

Astronomy and Astrophysics

Astrophysics

13 pages, 5 figures, the paper included all spectra is available at http://www.xray.mpe.mpg.de/~dgrupe/research/refereed.html

Scientific paper

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.

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