Ultra-Deep MIPS-70 Imaging of GOODS CDF-S

Details Ultra-Deep MIPS-70 Imaging of GOODS CDF-S Ultra-Deep MIPS-70 Imaging of GOODS CDF-S

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20147f&link_type=abstract

Spitzer Proposal ID #20147

Computer Science

Scientific paper

We propose ultra-deep MIPS 70um imaging of the GOODS Chandra Deep Field South (CDF-S). The goal of these observations is to determine the infrared properties of the highest redshift sources detectable by Spitzer with MIPS-70. In particular, we will derive source counts at the faintest possible depths and measure the infrared luminosity function out to z~1.5. We will also measure the 70um/24um flux density ratios to constrain what fraction of the infrared background arises from infrared-cool, starburst dominated luminous infrared galaxies versus infrared-warm AGN. Ultraluminous infrared galaxies contribute significantly to the total star-formation at high-redshift and are expected to be detected at flux levels near the confusion limit of the MIPS-70 band (~1-3 mJy). These observations are motivated by the GOODS philosophy of obtaining the deepest possible images from NASA's Great Observatories (HST, Chandra, and Spitzer) and will greatly build upon our knowledge of the high-redshift universe. The observations of GOODS CDF-S will complement the GO-1 70um observations of GOODS HDF-N. Observations in the south will allow us to constrain the cosmic variance in the faint counts and will provide a list of southern high-z infrared luminous galaxies for follow-up studies with future telescopes, such as ALMA.

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