A hunt for X-ray absorbed Narrow Line Seyfert 1s using the FeII/Hbeta ratio

We propose to observe a sample of four Narrow Line Seyfert 1 galaxies withstrong Fe II emission (FeNLS1s) for a total allocation time of 115 ks. The goalof this proposal is to test how common is the spectral hard Xray (Evirgul78 keV)absorption feature in FeNLS1s, recently observed in two objects of this class.This feature appears as a clear signature of dense matter outflowing from thenucleus. If our opticallybased criterion (i.e. Fe II4570/Hbeta higher than 1.5)would be efficient in selecting objects with deep sharp Xray edges, the originof this feature in outflowing clouds would be supported. A frequent occurrenceof this spectral drop will therefore provide clues of an intimate link betweenNLS1s and BAL QSOs phenomena. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]