An Improved uvby-Metallicity Calibration for Metal-Rich Stars

We present an improved uvby-metallicity relation calibrated for F,G, and early K dwarfs, and an analogous uvby-Teff relation, both derived using a Levenberg-Marquardt minimization scheme. Our calibrations are based on 1533 stars which appear in both the Cayrel de Strobel (2001) metallicity compilation, and in the Hauck-Mermilliod (1998) catalog of uvby photometry. We also examine the speculative possibility of using uvby photometry to produce a uvbyplaneticity calibration. We conclude that while there is likely no strong photometric indicator of the presence or absence of short-period planets, the possibility of a spectroscopic indicator of planeticity is well worth examining. Subject headings: stars: planetary systems — stars: metallicity