Physics
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8263s&link_type=abstract
HST Proposal ID #8263
Physics
Hst Proposal Id #8263 Distant Galaxies
Scientific paper
Some of the most ambitious and widely-cited extragalactic observations in recent years have been the constraints made on the star formation history of the Universe. Madau et al {1996} combined ground-based samples with photometric redshifts and UV dropout galaxies from the HDF to obtain the evolving UV luminosity density and hence star formation rate {SFR}. From this they inferred a peak and subsequent redshift cutoff in this star formation. If correct this is a major result. However, H-alpha and sub-mm surveys find systematically higher star formation rates, calling into question this behaviour: in essence, by selecting in the UV, Madau et al are highly sensitive to dust reddening. We have recently made a new determination of the comoving star formation density at 0
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