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Description
The Sydney University Molonglo Sky Survey (SUMSS) is a radio imaging survey of the sky south of declination, delta = -30 degrees (a total area of 8100 square degrees) carried out with the Molonglo Observatory Synthesis Telescope (MOST) operating at 843 MHz. The survey consists of 629 4.3 degrees by 4.3 degrees mosaic images with a resolution of 45" by 45" x cosec delta, and a limiting peak brightness of 6 mJy/beam at declinations delta <= 50 degrees, and 10 mJy/beam at delta > 50 degrees. The SUMSS is therefore similar in sensitivity and resolution to the northern NRAO VLA Sky Survey (NVSS). This table based on the latest version of the SUMSS Source Catalog of radio sources (which uses all of the released mosaics). Sources were found by fitting two-dimensional Gaussians to SUMSS mosaics. Positions in the catalog are accurate to within 1-2" for sources with peak brightness >= 20 mJy/beam, and are always better than 10". The internal flux density scale is accurate to within 3%. Image artifacts were classified using a decision tree, which correctly identified and rejected spurious sources in over 96% of cases. Analysis of the catalog shows that it is highly uniform and is complete to 8 mJy at delta <= -50 degrees, and to 18 mJy at delta > -50 degrees. This HEASARC table was initially created in August 2005. It is updated automatically within a week of any detected change to the SUMSS Source Catalog as obtained from the SUMSS Website at the following URL: <pre> <a href="https://web.archive.org/web/20241228020055/">https://web.archive.org/web/20241228020055/</a><a href="http://www.astrop.physics.usyd.edu.au/sumsscat/update">http://www.astrop.physics.usyd.edu.au/sumsscat/update</a> </pre> This is a service provided by NASA HEASARC .
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