Spitzer South Ecliptic Pole Survey

Details Spitzer South Ecliptic Pole Survey Spitzer South Ecliptic Pole Survey

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50581d&link_type=abstract

Spitzer Proposal ID #50581

Physics

Scientific paper

The Balloon-borne Large Aperture Submillimeter Telescope, a precursor to Herschel-SPIRE, had a very successful long duration flight from Antarctica in December 2006. Two extragalactic fields were mapped in exquisite detail, discovering more submillimeter sources than all of the ground-based 'blank sky' surveys put together. One deep field, centered on GOODS-S, already has extensive Spitzer imaging, and here we request MIPS time for the second field, a strip of ~10 square degrees centered near the South Ecliptic Pole. This is a unique extragalactic survey field because of the combination of BLAST 250, 350 and 500 micron maps with deep mutli-band mid- and far-IR imaging from the Akari satellite. The addition of Spitzer data at 24 and 70 microns will enable us to pursue several inter-related science goals. Firstly, we can construct detailed spectral energy distributions for many galaxies, which can then be used as templates for studying the fainter, higher redshift population. Secondly, our proposed MIPS depths of 1 sigma = 56 (3600) micro-Jy at 24 (70) microns, should be sufficient to yield identifications for the bulk of BLAST sources, enabling detailed studies of the evolution of LIRGs and ULIRGs in the crucial z=1-3 range. And thirdly, careful stacking of the MIPS 24 micron sources on the BLAST maps should allow us to resolve most of the far-IR background, and study the populations which are responsible for making it. The SEP field has existing or planned coverage for many ground-based observatories, and is also part of the Herschel HERMES Guaranteed Time project, as well as being ideally placed for ALMA follow-up. The missing ingredient is the deep mid-IR imaging which only MIPS can provide.

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