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   51188
   The Unified Seyfert model well describes the characteristics of Seyfert
   2 galaxies. We have observed Seyfert 2 galaxies based on the brightness
   [OIII]5007 line, and found that all of our sample have obscured nuclei.
   The column density of the obscured matter is distributed around log
   NH=23.5, and only a few objects have lager column density. We would
   like to check the distribution using the ionization cone, which is one
   of evidence of obscued nuclei. We will also make clear the total number
   of ionizing photons for an Extended Emission Line Region.
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