Obtaining an unbiased redshift distribution for submm galaxies

Details Obtaining an unbiased redshift distribution for submm galaxies Obtaining an unbiased redshift distribution for submm galaxies

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2502i&link_type=abstract

ATNF proposal C2105, Semester: July, 2009

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Extragalactic, Atca

Scientific paper

We request 36hr with ATCA to test a new method for determining an unbiased redshift distribution for submm galaxies (SMGs) - a critical parameter capable of breaking degeneracies in galaxy evolution models. Our method is based on the expectation that dusty ULIRGs will exhibit maser activity similar to that observed in other IR-luminous AGN. As well as determining redshifts, detections will allow us to estimate the mass of the central black hole (to compare with X-ray-based estimates), to pinpoint the maser relative to the synchrotron emission, and to explore any correlation between L(FIR) and L(H2O). The key to our project is the largest deep submm survey undertaken thus far - LESS - in the Extended Chandra Deep Field South. We propose to piggyback on the Huynh et al. 5-GHz survey of ECDFS, going 2.3x deeper in two pointings centred on over-densities of bright SMGs.

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