The SARG Planet Search

TL;DR

This paper summarizes the SARG Planet Search's efforts to study planets in binary star systems, including radial velocity detection, abundance anomaly analysis, and preliminary findings on planet frequency in such systems.

Contribution

It introduces the SARG survey focusing on planets in binaries, detailing the methodology, sample selection, and initial results, highlighting differences from planets around single stars.

Findings

Preliminary detection of planets in binary systems.

Evidence of abundance anomalies related to planetary ingestion.

Insights into the frequency of planets in binary star systems.

Abstract

In this chapter of the book "Planets in binaries" we summarize our recent work on the statistical properties of planets in binaries and the differences with respect to planets orbiting single stars. We then present the radial velocity planet search on moderately wide binaries with similar components (twins) ongoing at TNG using the high resolution spectrograph SARG. We discuss the sample selection, the observing and analysis procedures, and the preliminary results of the radial velocity monitoring. We also discuss the second major science goal of the SARG survey, the search for abundance anomalies caused by the ingestion of planetary material by the central star, considering the two samples of twins and the planet hosts in binaries with similar components. Finally, we present some preliminary conclusions on the frequency of planets in binary systems.