An X-Ray Study of a Lens-Selected Group of Galaxies at Z=0.29

Details An X-Ray Study of a Lens-Selected Group of Galaxies at Z=0.29 An X-Ray Study of a Lens-Selected Group of Galaxies at Z=0.29

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1317f&link_type=abstract

Chandra Proposal ID #04800683

Computer Science

Chandra Proposal Id #04800683

Scientific paper

We are conducting a program to study evolution in the properties of galaxy groups. To create our sample, we are using an exciting new method to find moderate-to-high redshift groups -- through their association with gravitational lenses. We request Chandra time to observe the largest (in terms of confirmed members) and best-studied lens-selected group. We will use the observations to measure the group properties with high precision, thereby reducing the uncertainty in the group's effect on the lensing gravitation potential by at least a factor of two and improving the determination of H_0 with this lens system. In addition, we will compare the group properties to those of local groups and massive clusters at similar redshifts and study the X-ray properties of the lensed quasar.

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