A Gap-sharing Planet Pair Shaping the Crescent in HD 163296: A Disk Sculpted by a Resonant Chain

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dc.contributor.authorGarrido-Deutelmoser, Juan
dc.contributor.authorPetrovich, Cristobal
dc.contributor.authorCharalambous, Carolina
dc.contributor.authorGuzman, Viviana V.
dc.contributor.authorZhang, Ke
dc.date.accessioned2025-01-20T20:16:31Z
dc.date.available2025-01-20T20:16:31Z
dc.date.issued2023
dc.description.abstractThe Atacama Large Millimeter Array observations of the disk around HD 163296 have resolved a crescent-shape substructure at around 55 au, inside and off-center from a gap in the dust that extends from 38 to 62 au. In this work we propose that both the crescent and the dust rings are caused by a compact pair (period ratio similar or equal to 4:3) of sub-Saturn-mass planets inside the gap, with the crescent corresponding to dust trapped at the L (5) Lagrange point of the outer planet. This interpretation also reproduces well the gap in the gas recently measured from the CO observations, which is shallower than what is expected in a model where the gap is carved by a single planet. Building on previous works arguing for outer planets at approximate to 86 and approximate to 137 au, we provide a global model of the disk that best reproduces the data and shows that all four planets may fall into a long resonant chain, with the outer three planets in a 1:2:4 Laplace resonance. We show that this configuration is not only an expected outcome from disk-planet interaction in this system, but it can also help constrain the radial and angular position of the planet candidates using three-body resonances.
dc.fuente.origenWOS
dc.identifier.doi10.3847/2041-8213/acbea8
dc.identifier.eissn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://doi.org/10.3847/2041-8213/acbea8
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92335
dc.identifier.wosidWOS:000950388400001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal letters
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleA Gap-sharing Planet Pair Shaping the Crescent in HD 163296: A Disk Sculpted by a Resonant Chain
dc.typeartículo
dc.volumen945
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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