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   PR # 41243
   Abundance of hot gas in elliptical galaxies generally indicate much
   lower value than theoretically expected one. One way to address this
   problem is to observe small group of galaxies which can contain hot
   gas ejected from just one elliptical galaxy. NGC4104 group is the
   best object which satisfy following conditions. (1) grope has just
   one giant elliptical and there is no interaction to other member
   (2)dust emission of this elliptical is well measured so that we can
   estimate stellar mass loss ratio (3)there are measurements on
   abundance of stellar component, thus we can calculate total amount of
   heavy elements ejected by given stellar mass loss ratio.
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