Planets around stars in young nearby associations *** radial Velocity searches: a feasibility study, and first results

TL;DR

This study assesses the feasibility of detecting planets around young nearby stars using radial velocity, highlighting the potential and challenges due to stellar activity, and compares this with direct imaging methods.

Contribution

It provides the first results and feasibility analysis of radial velocity planet searches around young stars in nearby associations.

Findings

Radial velocity can detect planets around young stars despite stellar activity.

Young stars' rapid rotation and activity pose challenges for RV detection.

Complementarity between RV and direct imaging enhances planet detection prospects.

Abstract

Stars in young nearby associations are the only targets allowing giant planet searches at all separations in the near future, by coupling indirect techniques such as radial velocity and deep imaging. These stars are first priorities targets for the forthcoming planets imagers on 10-m class telescopes. Young stars rotate more rapidly and are more active than their older counterparts. Both effects can limit the capability to detect planets using RV. We wish to explore the planet detection capabilities of a representative sample of stars in close and young associations with radial velocity data and explore the complementarity between this technique and direct imaging. We observed 26 such targets with spectral types from A to K and ages from