Ultra-Deep IRAC Imaging of Massive Lensing Galaxy Clusters: Probing the Reionization Era with Spitzer

Details Ultra-Deep IRAC Imaging of Massive Lensing Galaxy Clusters: Probing the Reionization Era with Spitzer Ultra-Deep IRAC Imaging of Massive Lensing Galaxy Clusters: Probing the Reionization Era with Spitzer

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20439e&link_type=abstract

Spitzer Proposal ID #20439

Physics

Scientific paper

Locating and characterizing the first subgalactic sources that may have been responsible for completing cosmic reionization and ending the ``Dark Ages'' represents the latest frontier in observational cosmology. The remarkable potential of Spitzer to probe the reionzation era was demonstrated dramatically by the IRAC detection of a gravitationally-lensed z~7 galaxy at 3.6 and 4.5 um made by our group. The results have provided a number of significant constraints on the physical properties of this galaxy. Here, we propose to conduct ultra-deep IRAC imaging (10 hrs per band) of two of the most well-studied lensing clusters, Abell 1689 and Abell 2218, in our sample. Our goal is to detect more examples of lensed galaxies at z=6-8 and to explore for systems at higher redshift.

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