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

D. Grupe·K. Beuermann·K. Mannheim·H. -C. Thomas
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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.

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D. Grupe, K. Beuermann, K. Mannheim, H. -C. Thomas. 1999-08-31. New bright soft X-ray selected ROSAT AGN II. Optical emission line properties. https://arxiv.org/abs/astro-ph/9908347

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