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   PR #   104
   Zw3146 is one of the most luminous clusters known, about 2e45 erg/s,
   and has the highest H alpha line luminosity yet recorded (Allen at al
   MNRAS 259, 67,1992). It was detected in the RASS at about 0.5 ct/s and
   can be expected to be well detected by ASCA. A strong cooling flow is
   suspected.
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