Galaxies 09: Assembly, Gas Content and Star Formation History of Galaxies
Kotaro Kohno
University of Tokyo
AzTEC-on-ASTE survey of dusty extreme starburst galaxies
In order to unveil the hidden part of the cosmic star formation, we have conducted unprecedentedly wide and deep $\lambda$ 1100 $\mu$m imaging surveys of dusty extreme starburst galaxies or submillimeter-bright galaxies (SMGs) using the bolometer camera AzTEC mounted on the submillimeter-wave telescope ASTE in Northern Chile.
The total coverage of the survey area exceeds a few deg$^2$
with a typical noise level (1 $\sigma$) of 0.5 - 1.0 mJy at $\lambda$ 1100 $\mu$m
(or roughly equivalent to 1 - 2 mJy at $\lambda$ 850 $\mu$m),
that is deep enough to uncover ULIRG-class dusty violent starbursts lying $z>1$.
Major blank fields, such as Subaru XMM-Newton Deep Field (SXDF),
Subaru Deep Field (SDF), AKARI Deep Field South (ADF-S),
GOODS-S, and COSMOS, have been extensively observed,
and $\sim$ 40 over density regions traced by high-$z$ radio galaxies
and clusters of optically selected galaxies such as LAEs and LABs
have also been mapped. In this presentation, the emphasis will be placed
on (1) the on-going efforts to investigate the multi-wavelengths properties
of the newly detected SMGs mainly in SXDF, SDF, and ADF-S, and
(2) a plan to explore the energy sources of them using our newly developed diagnostic method, based on high angular resolution, high sensitivity mm/submm molecular spectroscopy accomplished by ALMA.
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