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arXiv · astro-ph/0207054

An Improved uvby-Metallicity Calibration for Metal-Rich Stars

Sarah Martell·Gregory Laughlin
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Abstract

We present an improved uvby-metallicity relation calibrated for F, G, and early K dwarfs, and an analogous uvby-T(eff) 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 uvby-planeticity 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.

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Sarah Martell, Gregory Laughlin. 2002-07-01. An Improved uvby-Metallicity Calibration for Metal-Rich Stars. https://doi.org/10.1086/344165

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