Photometric Redshifts: A Comparison of Methods

Details Photometric Redshifts: A Comparison of Methods Photometric Redshifts: A Comparison of Methods

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ingn....3...16b&link_type=abstract

The Newsletter of the Isaac Newton Group of Telescopes (ING Newsl.), issue no. 3, p. 16-18

Astronomy and Astrophysics

Astronomy

Photometric Redshift, Large-Scale Structure.

Scientific paper

The advantages of being able to accurately extract red-shifts from photometric data is of great importance when wanting to complete large scale surveys of the night sky. In an exposure of minutes, rather than the hours needed for spectroscopy, we are able to gain colour data from a great number of astronomical sources at once. This is especially apparent with the advent of large format panoramic cameras such as the INT WFC, MegaCam at the Canada-France-Hawaii Telescope (CFHT) and, in the future, VISTA (Visible & Infrared Survey Telescope for Astronomy). If this data can then be used to accurately calculate the distribution of galaxies with red-shift, the large scale structure of the universe can be more readily determined.

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