Volatile and refractory abundances of solar analogs with planets

TL;DR

This study analyzes the chemical abundances of 95 solar analogs to determine if the presence of planets influences volatile and refractory element ratios, finding no significant differences after accounting for galactic chemical evolution.

Contribution

It provides a comprehensive abundance analysis of solar analogs with and without planets, highlighting that planetary presence does not significantly alter volatile-to-refractory ratios after corrections.

Findings

No clear abundance differences between stars with and without planets.

Abundance ratios are similar to solar values after removing galactic evolution effects.

Stars with super-Earth-like planets show no distinct abundance pattern.

Abstract

We present a detailed abundance analysis of high-quality HARPS, UVES and UES spectra of 95 solar analogs, 33 with and 62 without detected planets. These spectra have S/N > 350. We investigate the possibility that the possible presence of terrestrial planets could affect the volatile-to-refratory abundance ratios. We do not see clear differences between stars with and without planets, either in the only seven solar twins or even when considering the whole sample of 95 solar analogs in the metallicity range -0.3< [Fe/H] < 0.5 . We demonstrate that after removing the Galactic chemical evolution effects the possible differences between stars with and without planets in these samples practically disappear and the volatile-to-refractory abundance ratios are very similar to solar values. We investigate the abundance ratios of volatile and refractory elements versus the condensation temperature of this sample of solar analogs, in particular, paying a special attention to those stars harbouring super-Earth-like planets.