Artículo
Cronomoons: Origin, dynamics, and light-curve features of ringed exomoons
Sucerquia, Mario; Alvarado Montes, Jaime A.; Bayo, Amelia; Cuadra, Jorge; Cuello, Juan Nicolás
; Giuppone, Cristian Andrés
; Montesinos, Matías; Olofsson, J.; Schwab, Christian; Spitler, Lee; Zuluaga, Jorge I
![Icon](/themes/CONICETDigital/images/conicet.png)
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
05/2022
Editorial:
Oxford Univ Press Inc
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In 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.
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Articulos(IATE)
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Citación
Sucerquia, Mario; Alvarado Montes, Jaime A.; Bayo, Amelia; Cuadra, Jorge; Cuello, Juan Nicolás; et al.; Cronomoons: Origin, dynamics, and light-curve features of ringed exomoons; Oxford Univ Press Inc; Monthly Notices of the Royal Astronomical Society; 512; 1; 5-2022; 1032-1044
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