Parent Stars of Extrasolar Planets. XII. Additional evidence for trends with vsini, condensation temperature, and chromospheric activity

TL;DR

This study provides additional evidence supporting differences in stellar rotation, elemental abundance trends, and chromospheric activity between stars with and without detected exoplanets, clarifying previous disputes.

Contribution

It consolidates and supports prior claims of differences in vsini, abundance-condensation temperature trends, and chromospheric activity in planet-hosting stars.

Findings

Support for differences in vsini between star samples

Confirmation of abundance-condensation temperature trend differences

Evidence of chromospheric activity variations

Abstract

Several recent studies have reported differences in vsini, abundance-condensation temperature trends, and chromospheric activity between samples of stars with and without Doppler-detected planets. These findings have been disputed, and the status of these results remains uncertain. We evaluate these claims using additional published data and find support for all three.