Mathematics – Logic
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20923601k&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #236.01; Bulletin of the American Astronomical Society,
Mathematics
Logic
Scientific paper
Observing the star formation rate (SFR) and metallicity since the earliest times in the universe is crucial to understanding galaxy formation and evolution. Current cosmic star formation history studies are hindered by significant discrepancies between star formation rate density estimates at different wavelengths: the discrepancy between the H-alpha and IR SFRs results from a lack of correction for stellar absorption and reddening, while the discrepancy between SFR([OII]) and SFR(H-alpha) is due to the effects of reddening and metallicity. I derive a new theoretical SFR([OII]) calibration that successfully removes the SFR discrepancies in both nearby and distant samples. A truly reliable [OII] star formation history requires knowledge of the metallicity history of star forming galaxies. I present the latest results from our new observational investigation into the metallicity history of star-forming galaxies between 0
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