Flux limited redshift surveys in the optical and submillimeter

Details Flux limited redshift surveys in the optical and submillimeter Flux limited redshift surveys in the optical and submillimeter

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aipc..470..133c&link_type=abstract

The 9th astrophysics conference: After the dark ages, when galaxies were young (the Universe at 2<Z<5). AIP Conference Proceedi

Astronomy and Astrophysics

Astrophysics

1

Observational Cosmology, Astronomical Observations

Scientific paper

While samples of high redshift galaxies may best be found using color or line selection techniques ultimately only flux limited samples can tell us where the bulk of the galaxies lie and what the history of star formation was. With the new 10m telescopes it is now possible to obtain quite complete spectroscopic redshift samples of optically selected samples to AB magnitudes of near 25 in the B band and 24 in the I band. Despite the fact that samples at these faint magnitudes encompass the majority of the starlight energy density at optical and ultraviolet wavelengths only a very small fraction of galaxies lie above the z=2 boundary of the present conference and more than half of the galaxies lie at z<1. However, a roughly comparable amount of the star formation is now known to be reradiated by dust into the submillimeter and we might hope that the new populations of submillimeter galaxies being found at 850 microns with the SCUBA detector on JCMT might contain high redshift objects since the negative K correction at these wavelengths makes high z objects as easy to detect as those at z=1. Preliminary results suggest that the bulk of these objects lie at 1

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