Chemical composition of a sample of bright solar-metallicity stars

TL;DR

This paper provides detailed chemical compositions and stellar parameters for seven young solar-metallicity stars, including first-time analyses for two stars, using spectroscopic data and automated pipelines.

Contribution

It introduces an automated pipeline for deriving stellar parameters and chemical compositions of F, G, and K stars, and presents new chemical data for two previously uncharacterized stars.

Findings

Derived stellar parameters generally agree with literature

First chemical analysis of two stars, HIP 80124 shows high lithium abundance

Star HIP 80124's chemical pattern differs from solar sibling expectations

Abstract

We present a detailed analysis of seven young stars observed with the spectrograph SOPHIE at the Observatoire de Haute-Provence for which the chemical composition was incomplete or absent in the literature. For five stars, we derived the stellar parameters and chemical compositions using our automatic pipeline optimized for F, G, and K stars, while for the other two stars with high rotational velocity, we derived the stellar parameters by using other information (parallax), and performed a line-by-line analysis. Chromospheric emission-line fluxes from CaII are obtained for all targets. The stellar parameters we derive are generally in good agreement with what is available in the literature. We provide a chemical analysis of two of the stars for the first time. The star HIP 80124 shows a strong Li feature at 670.8 nm implying a high lithium abundance. Its chemical pattern is not consistent with it being a solar sibling, as has been suggested.