What question did this study set out to answer?

To investigate the origin, dynamical stability, and transit signatures of ringed exomoons, and to re-evaluate candidates such as Kepler-1625b i.

December 2, 2021Monthly Notices of the Royal Astronomical SocietyOpen Access

Cronomoons : origin, dynamics, and light-curve features of ringed exomoons

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To investigate the origin, dynamical stability, and transit signatures of ringed exomoons, and to re-evaluate candidates such as Kepler-1625b i.
Modeled formation mechanisms and evaluated the dynamical and thermodynamic stability of dust and ice particles forming circumsatellital ring systems.
Calculated transit timing variations (TTV) and transit duration variations (TDV) induced on host planets by ringed exomoons.
Applied dynamical and light-curve models to observational transit data of exomoon candidate Kepler-1625b i.
Simulations reveal that isolated cronomoons can retain ring systems across timescales sufficiently long to permit astronomical detection and follow-up.
Circumsatellital rings develop resonant gaps analogous to Saturn's Cassini Division, carved out by gravitational resonances from the host planet.
Light-curve analyses show that the purported Neptune-sized signal of Kepler-1625b i is consistent with an Earth-mass cronomoon bearing an extended ring system.

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Implication

Dynamical modeling study reveals that ringed exomoons maintain stable rings that magnify transit signatures, suggesting the candidate Kepler-1625b i may be an Earth-mass body.

Cite This Study

Sucerquia et al. (2021) studied this question.

synapsesocial.com/papers/6a8a3d78c2b067567ebd5493 https://doi.org/10.1093/mnras/stab3531

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Implication

Dynamical modeling study reveals that ringed exomoons maintain stable rings that magnify transit signatures, suggesting the candidate Kepler-1625b i may be an Earth-mass body.

Cronomoons : origin, dynamics, and light-curve features of ringed exomoons

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Discussion

Implication

Cite This Study

Cronomoons : origin, dynamics, and light-curve features of ringed exomoons

Key Points

Discussion

Implication

Cite This Study