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SkyMapper Southern Survey: First Data Release (DR1)

  • Christian Wolf (a1) (a2), Christopher A. Onken (a1) (a2), Lance C. Luvaul (a1), Brian P. Schmidt (a1) (a2), Michael S. Bessell (a1), Seo-Won Chang (a1) (a2), Gary S. Da Costa (a1), Dougal Mackey (a1), Tony Martin-Jones (a1), Simon J. Murphy (a1) (a3), Tim Preston (a1) (a4), Richard A. Scalzo (a1) (a2) (a5), Li Shao (a1) (a6), Jon Smillie (a7), Patrick Tisserand (a1) (a8), Marc C. White (a1) and Fang Yuan (a1) (a2) (a9)...


We present the first data release of the SkyMapper Southern Survey, a hemispheric survey carried out with the SkyMapper Telescope at Siding Spring Observatory in Australia. Here, we present the survey strategy, data processing, catalogue construction, and database schema. The first data release dataset includes over 66 000 images from the Shallow Survey component, covering an area of 17 200 deg2 in all six SkyMapper passbands uvgriz, while the full area covered by any passband exceeds 20 000 deg2. The catalogues contain over 285 million unique astrophysical objects, complete to roughly 18 mag in all bands. We compare our griz point-source photometry with Pan-STARRS1 first data release and note an RMS scatter of 2%. The internal reproducibility of SkyMapper photometry is on the order of 1%. Astrometric precision is better than 0.2 arcsec based on comparison with Gaia first data release. We describe the end-user database, through which data are presented to the world community, and provide some illustrative science queries.


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Publications of the Astronomical Society of Australia
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  • EISSN: 1448-6083
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