ASCA OBSERVATIONS OF TYPE-2 SEYFERT-GALAXIES .2. THE IMPORTANCE OF X-RAY-SCATTERING AND REFLECTION

We discuss the importance of X-ray scattering and Compton reflection i n type 2 Seyfert Galaxies, based upon the analysis of ASCA observation s of 25 such sources. Consideration of the iron K alpha complex, [O II I] line, and X-ray variability suggest that NGC 1068, NGC 4945, NGC 29 92, Mrk 3, Mrk 463E, and Mrk 273 are dominated by reprocessed X-rays. We examine the properties of these sources in more detail. We find tha t the iron K alpha complex contains significant contributions from neu tral and high-ionization species of iron. Compton reflection, hot gas and starburst emission all appear to make significant contributions to the observed X-ray spectra. Mrk 3 is the only source in this subsampl e that does not have a significant starburst contamination. The ASCA s pectrum below 3 keV is dominated by hot scattering gas with U-X simila r to 5, N-H similar to 4 x 10(23) cm(-2). This material is more highly ionized than the zone of material comprising the warm absorber seen i n Seyfert 1 galaxies, but may contain a contribution from shock-heated gas associated with the jet. Estimates of the X-ray scattering fracti on cover 0.02%-5%. The spectrum above 3 keV appears to be dominated by a Compton reflection component, although there is evidence that the p rimary continuum component becomes visible close to similar to 10 keV.