The SuperCOSMOS all-sky galaxy catalogue
J.A. Peacock, N.C. Hambly, M. Bilicki, H.T. MacGillivray, L. Miller,, M.A. Read, S.B. Tritton

TL;DR
This paper presents the creation of a comprehensive all-sky galaxy catalogue using SuperCOSMOS photographic data, calibrated with SDSS, achieving high uniformity and depth, and matched with infrared surveys for cosmological research.
Contribution
The paper introduces a new, highly uniform all-sky galaxy catalogue calibrated with SDSS and matched with infrared surveys, covering about 20 million galaxies with improved accuracy.
Findings
Achieved 2% linear photometric calibration accuracy.
Catalogue is approximately 90% complete at high Galactic latitudes.
Matched with 2MASS and WISE, resulting in large, quasi-allsky galaxy samples.
Abstract
We describe the construction of an all-sky galaxy catalogue, using SuperCOSMOS scans of Schmidt photographic plates from the UKST and POSS2 surveys. The photographic photometry is calibrated using SDSS data, with results that are linear to 2% or better. All-sky photometric uniformity is achieved by matching plate overlaps and also by requiring homogeneity in optical-to-2MASS colours, yielding zero points that are uniform to 0.03 mag. or better. The typical AB depths achieved are B_J<21, R_F<19.5 and I_N<18.5, with little difference between hemispheres. In practice, the I_N plates are shallower than the B_J & R_F plates, so for most purposes we advocate the use of a catalogue selected in these two latter bands. At high Galactic latitudes, this catalogue is approximately 90% complete with 5% stellar contamination; we quantify how the quality degrades towards the Galactic plane. At low…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
