Stellar Parameters for a Sample of Stars with Planets

TL;DR

This paper provides a homogeneous analysis of stellar atmospheric parameters for stars with and without planets, revealing that stars with planets tend to be more metal-rich, which informs models of planetary system formation.

Contribution

It introduces a consistent method for determining stellar parameters across a large sample, improving the accuracy of chemical abundance studies in planet-hosting stars.

Findings

Stars with planets are about 0.13 dex more metal-rich.

Homogeneous parameter determination enhances abundance accuracy.

Results support metallicity's role in planet formation.

Abstract

The study of chemical abundances in stars with planets is an important ingredient for the models of formation and evolution of planetary systems. In order to determine accurate abundances, it is crucial to have a reliable set of atmospheric parameters. In this work, we describe the homogeneous determination of effective temperatures, surface gravities and iron abundances for a large sample of stars with planets as well as a control sample of stars without giant planets. Our results indicate that the metallicity distribution of the stars with planets is more metal rich by ~ 0.13 dex than the control sample stars.