Revised SWIRE photometric redshifts
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Abstract
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.
Description
Keywords
Galaxies: evolution, Ggalaxies: starburst, Galaxies: star formation, Cosmology: observations, Infrared: galaxies
Citation
Rowan-Robinson, M. et al. (2013). Revised SWIRE photometric redshifts. Monthly Notices of the Royal Astronomical Society, 428: 1958–1967