The 1.6um Bump as a Photometric Redshift Indicator

Details The 1.6um Bump as a Photometric Redshift Indicator The 1.6um Bump as a Photometric Redshift Indicator

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20110006s&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #100.06; Bulletin of the American Astronomical Society, Vol. 34, p.1269

Astronomy and Astrophysics

Astronomy

Scientific paper

I describe the principle of using the 1.6um H- spectral feature as a photometric redshift indicator and demonstrate that the technique holds promise by successfully recovering the redshifts of a small sample of z=0--1 galaxies using only their infrared (JHKL) photometry. I then consider the applicability of the technique to the 3.6--8um SIRTF filter set and investigate the systematic errors that could be present in photometric redshifts of SIRTF galaxies. Overall, it appears that --- with care and caveats --- the 1.6um bump will be a powerful tool for estimating redshifts of distant galaxies in upcoming deep space-borne infrared imaging surveys.

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