Mathematics – Logic
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2587w&link_type=abstract
ATNF proposal C1563, Semester: October, 2009
Mathematics
Logic
Atca
Scientific paper
The South Pole Telescope (SPT) is conducting a deep millimeter-wave survey at 90, 150 and 220 GHz of the extragalactic sky south of decl = -30 degrees from RA = 22h to 24h and 0h to 7h. We have detected a new class of sub-millimeter galaxies (SMGs) that have no previously-known radio, infrared, or optical counterpart. Photometric redshifts for a few of these SMGs show them to be highly redshifted (z>4). They may be unusually bright because of lensing: one of these candidates may be the highest-z SMG ever observed. Multi-wavelength observations are planned. The SPT beam of 1' cannot locate the SMGs with sufficient precision for optical studies: ATCA can provide the requisite resolution and sensitivity to enable followup. Observations with Spitzer have been approved, for which ATCA positions are essential. May 2009 CABB observations at 3mm, made under average-to-poor conditions, detected a small number of SMGs. We now propose further ATCA 3mm studies to locate additional SMGs. A backup project utilizes poor weather to determine the log N-log S relation for radio sources in newly-discovered clusters: data that is essential to make new, highly accurate measures of cosmological parameters.
Carlstrom John
Crawford Thomas
Marrone Dan
McIntyre Vince
Mohr Joseph
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