Review of techniques for photometric redshift estimation

Hongwen Zheng; Yanxia Zhang

doi:10.1117/12.925314

24 September 2012 Review of techniques for photometric redshift estimation

Hongwen Zheng, Yanxia Zhang

Proceedings Volume 8451, Software and Cyberinfrastructure for Astronomy II; 845134 (2012) https://doi.org/10.1117/12.925314
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

A photometric redshift provides an estimate for the distance of an astronomical object, such as a galaxy or quasar, which is a powerful statistical tool for studies of evolutionary properties of galaxies, in particular of faint galaxies, since their spectroscopic data are hard or impossible to obtain. At present, there are amounts of methods to estimate photometric redshifts of galaxies and quasars. These methods are grouped into two kinds: template fitting methods and empirical methods. The commonly used techniques about these two kinds are narrated. The difference of approaches between quasars and galaxies are pointed out. The methods show superiorities in galaxies and maybe show poor performance in quasars. Template-fitting methods and empirical methods have their pros and cons.

Citation Download Citation

Hongwen Zheng and Yanxia Zhang "Review of techniques for photometric redshift estimation", Proc. SPIE 8451, Software and Cyberinfrastructure for Astronomy II, 845134 (24 September 2012); https://doi.org/10.1117/12.925314

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