a $z=1.7$ dusty star-forming galaxy SED is most consistent with all the photometry. We adopt this redshift and re-fit the optical/near-infrared data using the BC03 models. Results are shown in Table 3. HUDF-JD2 is best fit with a solar metallicity template from the BC03 library with A$_{\rm V}\sim4$ mag of visual extinction using a @Calzetti:01 dust extinction law. We caution that the metallicity is not strongly constrained. The best-fit model is a post-starburst BC03 SED with $t=570$ Myr, $\tau$=30 Myr and a stellar mass of 6$\times$10$^{10}$ M$_{\sun}$. This is similar to the $z\sim2.5$ fits presented in @Mobasher. The result is not surprising since post-starburst galaxies could have significant dust content from dust produced in supernovae and AGB stars. In fact, it has been observationally shown that the host galaxies of core-collapse and Type Ia supernovae are dustier than field galaxies with the same observed optical brightness [@Chary05]. We caution however, that the post-starburst hypothesis, motivated by the large value of $t/\tau$, would be weakened if most of the star-formation takes place in optically thick regions of the galaxy.

From the SED fits, we estimate that the star-formation rate, as measured by the 1500Å flux escaping the galaxy, is very small 