An Improved uvby-Metallicity Calibration for Metal-Rich Stars

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.

9 pages, 4 figures, accepted in ApJ Letters

References in corpus (7)

• The metal-rich nature of stars with planets
• Catalogue of [Fe/H] determinations for FGK stars : 2001 edition
• Ten Low Mass Companions from the Keck Precision Velocity Survey
• A revision of the solar neighbourhood metallicity distribution
• On the Nature of Stars with Planets
• Are Stars with Planets Polluted?
• Photometric Abundances for G-Dwarfs: A Cautionary Tale

Cited by in corpus (16)

• Spectroscopic [Fe/H] for 98 extra-solar planet-host stars: Exploring the probability of planet formation
• The N2K Consortium. IV. New temperatures and metallicities for 100,000+ FGK dwarfs
• Parent Stars of Extrasolar Planets VII: New Abundance Analyses of 30 Systems
• Abundance Analysis of Planetary Host Stars I. Differential Iron Abundances
• SPECIES I: Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars
• Accurate fundamental parameters of CoRoT asteroseismic targets: the solar-like stars HD 49933, HD 175726, HD 181420 and HD 181906
• The N2K Consortium. VII. Atmospheric Parameters of 1907 Metal-Rich Stars: Finding Planet-Search Targets
• On the metallicity of open clusters I. Photometry
• The ability of intermediate-band Stromgren photometry to correctly identify dwarf, subgiant, and giant stars and provide stellar metallicities and surface gravities
• uvby-$\beta$ photometry of solar twins: the solar colors, model atmospheres, and the Teff and metallicity scales
• Kinematics, ages and metallicities for F and G type stars in the solar neighbourhood
• Chemical Composition of the Planet-Harboring Star TrES-1
• Asteroseismology of exoplanets hosts stars : tests of internal metallicity
• The uvbyHbeta Metallicity Calibration for G and K Dwarfs
• Identifying Very Metal-Rich Stars with Low-Resolution Spectra: Finding Planet-Search Targets
• Stellar Activity and the Stromgren Photometric Metallicity Calibration of Intermediate-Type Dwarf Stars