The Most Massive Galaxies at Every Epoch: A Comprehensive Spitzer Survey of High-Redshift Radio Galaxies

Details The Most Massive Galaxies at Every Epoch: A Comprehensive Spitzer Survey of High-Redshift Radio Galaxies The Most Massive Galaxies at Every Epoch: A Comprehensive Spitzer Survey of High-Redshift Radio Galaxies

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3329s&link_type=abstract

Spitzer Proposal ID #3329

Computer Science

Scientific paper

We propose a comprehensive survey of 70 high-redshift radio galaxies at 1 < z < 5.2. At each epoch, high-redshift radio galaxies are the most massive galaxies known, as evidenced by their tight observed-frame K-z relation which traces the bright envelope of field galaxies. We propose Spitzer observations to study the rest-frame near-IR stellar luminosity - redshift relation, a more fundamental measurement which provides the stellar masses of these systems. Most z>3 radio galaxies are strong sub-mm sources. MIPS observations will determine if the sub-mm flux is strongly contaminated by hot, AGN-related dust and will probe the on-going star-formation rates of these systems.

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