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- W1539696520 abstract "We present magnitudes and redshifts of galaxies in the cluster of galaxies CL0017-20 and in the double cluster CL0500-24. Luminosity functions and velocity distributions have been derived. CL0017-20 possesses a virial mass of $2.9 times 10^{14}$ M$_odot$ and a vmag band luminosity of $2.3 pm 0.5 times 10^{12}$ L$_odot$ ($M/L_{rm V} = 127$), much of it in a very compact core of size 113 kpc. Our new velocities and photometry of CL0500-24 confirm its double nature. Our group algorithm clearly detects two subconcentrations with masses 1.9 and $2.2 times 10^{14}$ M$_{odot}$. Its total vmag band luminosity amounts to $2.7 pm 0.8 times 10^{12}$ L$_{odot}$ ($M/L_{rm V}$ of 157). Since the crossing and collapse times in both clusters are smaller than the age of the Universe, they appear bound and virialized. It is surprising that although $M/L$ is small in these clusters, giant arcs have been detected in both." @default.
- W1539696520 created "2016-06-24" @default.
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- W1539696520 date "1994-08-19" @default.
- W1539696520 modified "2023-09-27" @default.
- W1539696520 title "The Medium Redshift Clusters CL0017-20 and CL0500-24" @default.
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