On the stability of additional moons orbiting Kepler-1625 b

ABSTRACT Since it was proposed, the exomoon candidate Kepler-1625 b-I has changed way we see satellite systems. Because of its unusual physical characteristics, many questions about stability and origin this have been raised. Currently, enough theoretical studies to show that if is indeed confirmed, will be stable. Regarding origin, previous works indicated most likely scenario capture, although conditions for in situ formation also investigated. In work, assume an study possibility additional, massive being stable same system. To model scenario, perform N-body simulations a system including planet, b-I, one extra Earth-like satellite. Based on results, satellites our exposed tidal interactions with planet gravitational effects owing rotation planet. We find around b capable harbouring two satellites. The can various locations between preference regions inside $25\, R_{\rm p}$. Our results suggest strong interaction important mechanism ensure circular orbits closer while 2:1 mean motion resonance would provide wider orbits.