Evidence of Absorption Due to Highly Ionized Gas in the Radio‐quiet Quasar PG 1114+445

We present results on the X-ray spectrum of the quasar PG 1114+445 from anASCA observation performed in 1996 June, and a ROSAT observation performed 3years earlier. We show good agreement between all the datasets can be obtainedif the underlying continuum in the 0.2--10 keV band is assumed to be a powerlaw(photon index Gamma approx 1.8) absorbed by photoionized material. The ionizedgas imprints deep absorption edges in the observed spectrum <~ 2 keV due toOvii and Oviii, from which we determine its column density (approx 2E22cm^{-2}) and ionization parameter (Ux approx 0.1) to be similar to thatobserved in Seyfert-I galaxies. Unfortunately these data do not allow anystrong constraints to be placed on the location, or solid angle subtended bythe material at the ionizing source. We also find evidence for absorption inthe Fe K-shell band in excess of that predicted from the lower energy features.This implies an Fe/O abundance ratio approx 10 times the cosmic value, or anadditional screen of more-highly ionized gas, possibly out-flowing from thenucleus. We briefly compare our results with those obtained from other activegalaxies.Comment: Accepted for publication in ApJ (scheduled 1997 Dec 20), LaTeX, 18 page