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We compare the redshifts, host galaxy metallicities, and isotropic(E_gamma,iso) and beaming-corrected (E_gamma) gamma-ray energy release of 16long-duration gamma-ray bursts (LGRBs) at z < 1. From this comparison, we findno statistically significant correlation between host metallicity and redshift,E_gamma,iso, or E_gamma. These results are at odds with previous theoreticaland observational predictions of an inverse correlation between gamma-rayenergy release and host metallicity, as well as the standard predictions ofmetallicity-driven wind effects in stellar evolutionary models. We consider theimplications that these results have for LGRB progenitor scenarios, and discussour current understanding of the role that metallicity plays in the productionof LGRBs.

No Correlation Between Host Galaxy Metallicity and Gamma-Ray Energy Release for Long-Duration Gamma-Ray Bursts