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We develop an automated spectral synthesis technique for the estimation ofmetallicities ([Fe/H]) and carbon abundances ([C/Fe]) for metal-poor stars,including carbon-enhanced metal-poor stars, for which other methods may proveinsufficient. This technique, autoMOOG, is designed to operate on relativelystrong features visible in even low- to medium-resolution spectra, yieldingresults comparable to much more telescope-intensive high-resolution studies. Wevalidate this method by comparison with 913 stars which have existinghigh-resolution and low- to medium-resolution to medium-resolution spectra, andthat cover a wide range of stellar parameters. We find that at lowmetallicities ([Fe/H] < -2.0), we successfully recover both the metallicity andcarbon abundance, where possible, with an accuracy of ~ 0.20 dex. At highermetallicities, due to issues of continuum placement in spectral normalizationdone prior to the running of autoMOOG, a general underestimate of the overallmetallicity of a star is seen, although the carbon abundance is stillsuccessfully recovered. As a result, this method is only recommended for use onsamples of stars of known sufficiently low metallicity. For theselow-metallicity stars, however, autoMOOG performs much more consistently andquickly than similar, existing techniques, which should allow for analyses oflarge samples of metal-poor stars in the near future. Steps to improve andcorrect the continuum placement difficulties are being pursued.

Automated Determination of [Fe/H] and [C/Fe] from Low-Resolution Spectroscopy