Life in the fast lane: The dark-matter distribution in the most massive galaxy clusters in the Universe at z>0.5

Details Life in the fast lane: The dark-matter distribution in the most massive galaxy clusters in the Universe at z>0.5 Life in the fast lane: The dark-matter distribution in the most massive galaxy clusters in the Universe at z>0.5

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004hst..prop10703e&link_type=abstract

HST Proposal ID #10703

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Hst Proposal Id #10703

Scientific paper

We propose two-filter ACS observations of a complete sample of 12 very X-ray luminous galaxy clusters at 0.50.5. HST's unique capabilities will allow us to: 1} measure accurately the clusters' dark matter distribution on scales from tens to more than 500/h_50 kpc from observations of strong and weak gravitational lensing, 2} use galaxy-galaxy lensing to measure the shape, extent, and mass content of the dark-matter halos of both cluster and field galaxies, and 3} study the color morphology of mergers and the star formation history of galaxies in a high-density environment. The proposed observations are complemented by Chandra observations of all our targets {all 12 awarded, 11 executed to date} which provide independent constraints on the dark matter and gas distribution in the cluster cores, as well a by extensive groundbased observations of weak lensing on yet larger scales, galaxy dynamics, and the SZ effect.

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