2012/10/12 by M. Rowan-Robinson, Michael Rowan-Robinson, Eduardo Gonzalez-Solares +5 · 1 citation
Physics and Astronomy · #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Infrared #Photometric redshift #Photometry (optics) #Physics #QSOS #Redshift #Torus #astro-ph.CO
paper · pdf · doi:10.1093/mnras/sts163
published as MNRAS 428, 1959 (2013) · 12 pages, 28 figures, accepted for publication MRRAS
arxiv created 2012/10/12 · openalex publication_date 2012/11/14 · arxiv updated 2015/08/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We have revised the Spitzer Wide-Area Infrared Extragalactic survey (SWIRE) Photometric Redshift Catalogue to take account of new optical photometry in several of the SWIRE areas, and incorporating Two Micron All Sky Survey (2MASS) and UKIRT Infrared Deep Sky Survey (UKIDSS) near-infrared data. Aperture matching is an important issue for combining near-infrared and optical data, and we have explored a number of methods of doing this. The increased number of photometric bands available for the redshift solution results in improvements both in the rms error and, especially, in the outlier rate. We have also found that incorporating the dust torus emission into the quasi-stellar object (QSO) templates improves the performance for QSO redshift estimation. Our revised redshift catalogue contains over 1 million extragalactic objects, of which 26 288 are QSOs.