Computer Science – Performance
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21112103b&link_type=abstract
American Astronomical Society, AAS Meeting #211, #121.03; Bulletin of the American Astronomical Society, Vol. 39, p.951
Computer Science
Performance
Scientific paper
The technology for mega-pixel mm/submm-wave cameras is being developed, and 10,000-pixel cameras are close to being deployed. These parameters correspond to degree-sized fields, and challenge the optical performance of current telescopes. Next-generation cameras will enable a survey of a large fraction of the sky, to detect active and star-forming dust-enshrouded galaxies. However, to avoid being limited by confusion, and finding only `monsters' it is necessary to push to large telescopes and short wavelengths. The CCAT project will enable the necessary performance to survey the sky to detect ultraluminous galaxies at z>2, each of which can then be imaged in detail with ALMA. The combination of image quality, collecting area and field-of-view will also enable CCAT to probe much deeper, to detect all the sources in legacy fields from the Spitzer and Herschel Space Telescopes. Unlike ALMA, CCAT will still be limited to detecting `normal' galaxies at z 3-5; however, by generating huge catalogs, CCAT will enable a dramatic increase in ALMA's efficiency, and almost completely remove the need for ALMA to conduct its own imaging survey. I will discuss the nature of galaxy surveys that will be enabled by CCAT, the issues of prioritizing and executing follow-up imaging spectroscopy with ALMA, and the links with the forthcoming NASA WISE mission, and future space-based far-infrared missions.
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