Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30328f&link_type=abstract
Spitzer Proposal ID #30328
Physics
Scientific paper
Galaxy clusters and protoclusters at high redshifts are very rare objects despite exhausive multi-wavelength searching in the sky. Objects of this kind bear rich information on formation of clusters and evolution of large scale structure. Simulations predict that clusters form in overdense regions in the universe; thus an overdense region is an ideal place to search for clusters. A overdense filament with a linear scale of 56Mpc at z=3.09 is found in the SSA22 region. This filament is traced by Lyman Alpha Emitters, Lyman Break Galaxies , Lyman Alpha Blobs. This region provides various types of galaxies at z=3.09, which may correspond to different stages in galaxy evolution in the dense environment. We propose both deep IRAC and MIPS 24micron imaging of this region. We will be able to analyze the stellar populations and obtain stellar mass for galaxies at different locations in the filament with the IRAC photometries, and also locate galaxies with strong star formation in the filament with the MIPS detection. This anlysis will reveal the formation process of galaxies in a dense environment like this filament.
Ashby Matt
Barmby Pauline
Fazio Giovanni
Huang Jiasheng
Rigopoulou Dimitra
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