Dynamics of the TrES-2 system

TL;DR

This paper studies the dynamical stability of potential additional planets in the TrES-2 system, highlighting regions where they could exist and the challenges in detecting them due to possible high inclinations.

Contribution

It identifies stable orbital regions for lower-mass planets in the TrES-2 system and analyzes how initial conditions affect their stability and detectability.

Findings

Stable regions exist inside and outside TrES-2b's orbit.

Additional planets can have high orbital inclinations.

Detection via transit is challenging for inclined planets.

Abstract

The TrES-2 system harbors one planet which was discovered with the transit technique. In this work we investigate the dynamical behavior of possible additional, lower-mass planets. We identify the regions where such planets can move on stable orbits and show how they depend on the initial eccentricity and inclination. We find, that there are stable regions inside and outside the orbit of TrES-2b where additional, smaller planets can move. We also show that those planets can have a large orbital inclination which makes a detection with the transit technique very difficult.