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

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dc.contributor.authorSucerquia, Mario
dc.contributor.authorAlvarado-Montes, Jaime A.
dc.contributor.authorBayo, Amelia
dc.contributor.authorCuadra, Jorge
dc.contributor.authorCuello, Nicolás
dc.contributor.authorGiuppone, Cristian A.
dc.contributor.authorMontesinos, Matías
dc.contributor.authorOlofsson, Johan
dc.contributor.authorSchwab, Christian
dc.contributor.authorSpitler, Lee
dc.contributor.authorZuluaga, Jorge I.
dc.date.accessioned2022-11-30T02:47:01Z
dc.date.available2022-11-30T02:47:01Z
dc.date.issued2022
dc.description.abstractIn recent years, technical and theoretical work to detect moons and rings around exoplanets has been attempted. The small mass/size ratios between moons and planets means this is very challenging, having only one exoplanetary system where spotting an exomoon might be feasible (i.e. Kepler-1625b i). In this work, we study the dynamical evolution of ringed exomoons, dubbed cronomoons after their similarity with Cronus (Greek for Saturn), and after Chronos (the epitome of time), following the Transit Timing Variations and Transit Duration Variation that they produce on their host planet. Cronomoons have extended systems of rings that make them appear bigger than they actually are when transiting in front of their host star. We explore different possible scenarios that could lead to the formation of such circumsatellital rings, and through the study of the dynamical/thermodynamic stability and lifespan of their dust and ice ring particles, we found that an isolated cronomoon can survive for time-scales long enough to be detected and followed up. If these objects exist, cronomoons’ rings will exhibit gaps similar to Saturn’s Cassini Division and analogous to the asteroid belt’s Kirkwood gaps but instead raised due to resonances induced by the host planet. Finally, we analyse the case of Kepler-1625b i under the scope of this work, finding that the controversial giant moon could instead be an Earth-mass cronomoon. From a theoretical perspective, this scenario can contribute to a better interpretation of the underlying phenomenology in current and future observations.en_ES
dc.facultadFacultad de Cienciasen_ES
dc.file.nameSucerquia_Cro2022.pdf
dc.identifier.doihttps://doi.org/10.1093/mnras/stab3531
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7552
dc.languageen
dc.publisherRoyal Astronomical Society
dc.rights© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.titleCronomoons: origin, dynamics, and light-curve features of ringed exomoons
dc.typeArticulo
uv.departamentoInstituto de Fisica y Astronomia
uv.notageneralNo disponible para descarga

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