Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..280b&link_type=abstract
Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,
Physics
Scientific paper
We discuss the selection of star-forming galaxies at z˜ 6 through the Lyman-break technique. Spitzer imaging implies many of these contain older stellar populations (>200 Myr) which produce detectable Balmer breaks. The ages and stellar masses (˜ 10^{10} M_{&sun;}) imply that the star formation rate density at earlier epochs may have been significantly higher than at z˜ 6, and might have played a key role in reionizing the Universe.
Bunker Andrew J.
Chiu Kuenley
Ellis Richard S.
Eyles Laurence P.
Lacy Mark
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