AzTEC/ASTE 1.1-mm Survey of the AKARI Deep Field-South

Details AzTEC/ASTE 1.1-mm Survey of the AKARI Deep Field-South AzTEC/ASTE 1.1-mm Survey of the AKARI Deep Field-South

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..418..307h&link_type=abstract

AKARI, a Light to Illuminate the Misty Universe ASP Conference Series, Vol. 418, proceedings of a conference held 16-19 February

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present the first results of a deep 1.1-mm survey of the AKARI Deep Field-South (ADF-S) with the AzTEC camera on the Atacama Submillimetre Telescope Experiment (ASTE). This survey covers ˜400 arcmin2, of which the central 202 arcmin2 is a uniform low-noise region with an rms noise level of 0.48-0.71 mJy. This is one of the deepest surveys at 1-mm wavelength, to cover such a large contiguous region. We detected 37 sources with a significance of 3.5-10 σ. The expected number of false detections at ≥3.5 σ is at most one, indicating that the detected sources are highly reliable. We construct differential and cumulative number counts and find a difference in number counts among 1-mm blank field surveys: the number counts of the ADF-S are less than those of GOODS-N and COSMOS fields. Most of the sources are not detected in the far-infrared bands of the AKARI, suggesting that they lie mostly at z ga 1 given the detection limits. In this survey, about 10% of cosmic infrared background at 1.1 mm is resolved into discrete sources.

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