Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

• DOI: 10.48550/arxiv.2411.13825
• Publication Date: 2024-11-20
• Authors: Qinghui Sun; Sharon X. Wang; Tianjun Gan; Chenyang Ji; Zitao Lin; Yuan-Sen Ting; Johanna Teske; Haining Li; Fan Liu; Xinyan Hua; Jiaxin Tang; Jie Yu; J. Zhang; Mariona Badenas-A...; Andrew Vanderburg; G. Ricker; Roland Vanderspek; David W. Latham; Sara Seager; Jon M. Jenkins; Richard P. Schwarz; T. Guillot; Thiam-Guan Tan; Dennis M. Conti; Kevin I. Collins; Gregor Srdoč; Chris Stockdale; Olga Suárez; Roberto Zambelli; Don J. Radford; Khalid Barkaoui; P. A. Evans; Allyson Bieryla
• Keywords: QB460-466; Earth and Planetary Astrophysics (astro-ph.EP); Exoplanet formation; Solar analogs; Astrophysics - Solar and Stellar Astrophysics; FOS: Physical sciences; Planet hosting stars; Astrophysics; Solar and Stellar Astrophysics (astro-ph.SR); Stellar abundances; Astrophysics - Earth and Planetary Astrophysics

The Sun is depleted in refractory elements compared to nearby solar twins, which may be linked the formation of giant or terrestrial planets. Here we present high-resolution, high signal-to-noise spectroscopic data for 17 solar-like stars hosting planets, obtained with Magellan II/MIKE, investigate whether this depletion related planet formation. We derive stellar parameters, including atmosphere, age, radius, mass, and chemical abundances 22 from carbon europium through line-by-line differential analysis. Our uncertainties range 0.01 dex Fe Si 0.08 Sr, Y, Eu. By comparing those stars, abundance ([X/Fe]$_{\rm solar}$ - [X/Fe]$_{\rm star}$) versus condensation temperature ($T_c$) trend. In particular, apply Galactic evolution corrections five twins within full sample. results conform previous studies that relatively volatile elements. For both rest find all known gas planets exhibit negative $T_c$ trend slopes, suggesting similar giant-planet-host stars. Additionally, no correlation between slopes total mass detected each system, not cause element Sun.