Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009noao.prop..457v&link_type=abstract
NOAO Proposal ID #2009B-0457
Astronomy and Astrophysics
Astrophysics
Scientific paper
We propose to obtain RIJK imaging with the 4m Southern Astrophysical Research (SOAR) telescope of 16 millimeter-bright sources discovered by the South Pole Telescope (SPT). We also propose to obtain optical spectroscopy and imaging with the 8m Gemini telescope of an additional 3 sources, also discovered by the SPT, and identified in the Blanco Cosmology Survey (BCS) as strong z>4 candidates via griz photometry. Together, these 19 sources are the empirically brightest and rarest members of the population commonly referred to as sub-millimeter galaxies (SMGs). Our targets are expected to have a higher median redshift than objects currently in the literature. Theoretical estimates suggest that we are detecting a significant number of lensed sources, some of which should lie at z>5. Our proposed photometric observations will allow us to identify the optical counterparts out to z~5 and maximize return by taking advantage of previous imaging of half of these objects by the BCS survey. The proposed observations will provide optical identification, characterization, and spectroscopic redshifts for this unique sample of galaxies. It is likely that one of these candidates will be the highest redshift SMG ever observed.
Ashby Matthew
Brodwin Mark
Carlstrom John
Crawford Tom
Gladders Mike
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