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astro-ph1998
Properties of new X-ray selected AGN
K. Bischoff, W. Pietsch, T. Boller +3
We present the results of a program to identify so far unknown active nuclei (AGN) in galaxies. Candidate galactic nuclei have been selected for optical spectroscopy from a cross-c…
astro-ph1998
Profile variations in AGN spectra
W. Kollatschny, K. Bischoff
We present results of optical long-term variability campaigns (10 - 20 years) of the two Seyfert galaxies NGC 7603 and Mrk 110. The variations of the continuum, of the individual b…
astro-ph1998
New active galactic nuclei detected in ROSAT All Sky Survey galaxies; Part I: Verification of selection strategy
W. Pietsch, Th. Boller, S. Doebereiner +3
We present the first results of a program to identify so far unknown active nuclei (AGN) in galaxies. Candidate galactic nuclei have been selected for optical spectroscopy from a c…