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Galaxy Cluster MS10081-1224 Center
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Galaxy Cluster MS1008.1-1224 (Center)

April 28, 2005
Central part of the cluster of galaxies MS1008.1-1224 . It is based on the same data as Photo 09a/99 and the field measures about 200 x 200 arcsec2.

It shows the intricate structure of this fine cluster and reveal the presence of a substantial number of gravitational effects. The strong gravitational potential of the cluster acts as a gravitational lens and distorts the images of several background galaxies, while magnifying their luminosity. The mapping of this "gravitational shear" and the study of the numerous "gravitational arclets" that are produced by the cluster will allow to determine its mass and mass distribution.

Some of the magnified galaxies may be very distant, lying at very high redshift. For them the cluster works as a "gravitational telescope", facilitating the study of these otherwise very faint primordial galaxies.


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