The Metallicity Dependence of Giant Planet Incidence

Abstract

We describe three corrections that should be applied to the observed relative incidence of nearby stars hosting giant planets. These are diffusion in the stellar atmosphere, use of the [Ref] index in place of [Fe/H] for metallicity, and correction for local sampling with the W velocity. We have applied these corrections to a subset of the SPOCS exoplanet survey with uniform giant planet detectability. Fitting the binned data to a power law of the form, $\alpha 10^{\beta [Fe/H]}$, we derived $\alpha =0.022\pm 0.007$ and $\beta =3.0\pm 0.5$; this value of $\beta$ is 50\% larger than the value determined by \citet{fv05}. While the statistical significance of this difference is marginal, given the small number statistics, these corrections should be included in future analyses that include larger samples.

arXiv commentaccepted for publication in MNRAS

References in corpus (11)

• Local Kinematics and the Local Standard of Rest
• Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the Solar neighbourhood
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program.Galactic stellar populations and planets
• On the Estimation of Confidence Intervals for Binomial Population Proportions in Astronomy: The Simplicity and Superiority of the Bayesian Approach
• Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog
• Stellar mass and age determinations - I. Grids of stellar models from Z=0.006 to 0.04 and M=0.5 to 3.5 Msun
• Metallicity of M dwarfs III. Planet-metallicity and planet-stellar mass correlations of the HARPS GTO M dwarf sample
• On the functional form of the metallicity-giant planet correlation
• A peculiarity of metal-poor stars with planets ?
• The OSACA Database and a Kinematic Analysis of Stars in the Solar Neighborhood
• The local standard of rest and the well in the velocity distribution

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