New prospects for observing and cataloguing exoplanets in well detached binaries

TL;DR

This paper explores the potential to detect and catalog exoplanets in well detached binary star systems using eclipse timing variations, through numerical simulations and analysis of observational prospects.

Contribution

It provides a comprehensive analysis of ETV detectability in well detached binaries, including new statistical catalog data and dynamical stability assessments.

Findings

Many ETV amplitudes are detectable with current and future telescopes.

Both circumstellar and circumbinary planets can produce observable ETVs.

The study offers a catalog-based statistical framework for exoplanet detection in binary systems.

Abstract

This paper is devoted to study the circumstances favourable to detect circumstellar and circumbinary planets in well detached binary-star-systems using eclipse timing variations (ETVs). We investigated the dynamics of well detached binary star systems with a star separation from 0.5 to 3~AU, to determine the probability of the detection of such variations with ground based telescopes and space telescopes (like former missions CoRoT and Kepler and future space missions Plato, Tess and Cheops). For the chosen star separations both dynamical configurations (circumstellar and circumbinary) may be observable. We performed numerical simulations by using the full three-body problem as dynamical model. The dynamical stability and the ETVs are investigated by computing ETV maps for different masses of the secondary star and the exoplanet (Earth, Neptune and Jupiter size). In addition we changed the planet's and binary's eccentricities. We conclude that many amplitudes of ETVs are large enough to detect exoplanets in binary star systems. As an application, we prepared statistics of the catalogue of exoplanets in binary star systems which we introduce in this article and compared the statistics with our parameter-space which we used for our calculations. In addition to these statistics of the catalogue we enlarged them by the investigation of well detached binary star systems from several catalogues and discussed the possibility of further candidates.