Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2003)

Details Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2003) Sydney University Molonglo Sky Survey (SUMSS) (Mauch+ 2003)

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat.8070....0m&link_type=abstract

VizieR On-line Data Catalog: VIII/70A. Originally published in: 2003MNRAS.342.1117M

Computer Science

2

Radio Sources, Surveys, Radio Continuum

Scientific paper

The Sydney University Molonglo Sky Survey (SUMSS) is being carried out at 843MHz with the Molonglo Observatory Synthesis Telescope (MOST) in its upgraded wide-field capability. The survey will consist of about 590 4.3x4.3° mosaic images with 45x45''cosecδ resolution, covering 8000 square degrees from -30 degrees declination southwards. The survey resolution and sensitivity (1-sigma noise limit 1mJy) are well-matched to the NRAO VLA Sky Survey (NVSS) so that together NVSS and SUMSS will provide a complete survey of the radio sky.
The version 1.1 of the catalogue consists of 107729 radio sources made by fitting elliptical gaussians in 271 SUMSS mosaics to a limiting peak brightness of 6mJy/beam at declination <-50°, and 10mJy/beam at declination >-50°. Positional accuracies are 1-2'' for sources with Sp>=20mJy/beam, and are always better than 10''. The internal flux density scale is accurate to 3%. Image artefacts have been classified using a decision tree, which correcly identifies and rejects spurious sources in over 96% of cases.
Version 1.0 of SUMSS was dated February 2003 and contained 107765 radio sources; several spurious catalogue entries have been removed, and the declination quoted was changed from 2 decimals to one.
(1 data file).

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