of which are in the COSMOS field.

Photometric Redshifts {#subsec-zphot}
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Photometric redshifts were determined with the EAZY code [@brammer08], using the full $FUV-8~\mu m$ spectral energy distribution (SEDs) ($FUV-K$ for objects in the $\sim$50% of our AEGIS field that does not have Spitzer coverage) and $z_{\rm max}=6.0$ (the maximum allowed redshift within EAZY). For this study we have used the photometric redshift $z_{\rm peak}$ output by EAZY.[^3] Publicly available redshifts in the COSMOS and AEGIS fields indicate that the redshift errors are very small at $\sigma_{\rm z}/(1+z)<0.02$ at $z_{\rm spec}<1.5$. Specifically, the photometric redshifts in COSMOS are in excellent agreement with the spectroscopic redshifts made publicly available by the zCOSMOS survey [@lilly07], with $\sigma_{\rm z}/(1+z)=0.008$ for 1444 objects at $z_{\rm spec}<1.5$. We also find excellent agreement between the photometric and spectroscopic redshifts for a larger sample of 2313 objects at $z_{\rm spec}<1.5$ in AEGIS from the DEEP2 survey [@davis03], with $\sigma_{\rm z}/(1+z)=0.017$. Both fields have very few catastrophic failures, with only 3% $>5$ $\sigma$ outliers. Although there are very few spectroscopic redshifts of optically-faint $K$-selected galaxies in these fields, we note that we found a similarly small scatter ($\sigma_{\rm z}/(1+z)<0.02$) in a pilot program targeting galaxies from the @kriek08 