Dark and Luminous Matter in the B2108+213 Group

Details Dark and Luminous Matter in the B2108+213 Group Dark and Luminous Matter in the B2108+213 Group

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.2033f&link_type=abstract

Chandra Proposal ID #07800739

Computer Science

Chandra Proposal Id #07800739

Scientific paper

The goal of the proposed observations is to characterize the distribution of luminous and dark matter in a moderate-redshift rich group of galaxies. What makes the B2108+213 system an especially compelling target is that it contains a strong gravitational lens, and the separation of the lensed images (4.6 arcsec) indicates that the group mass is contributing significantly to the lensing. The requested X-ray observations will complement existing radio and optical datasets to map the mass distribution in the system. These include high-resolution radio imaging with the VLBA, Keck spectroscopy, and imaging with the ACS on HST. The combination of X-ray imaging, strong and weak lensing, and stellar and galaxy dynamics will allow the mass distribution to be determined from pc to Mpc scales.

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