Статья

BOWIE-ALIGN: A <i>JWST</i> comparative survey of aligned versus misaligned hot Jupiters to test the dependence of atmospheric composition on migration history

James KirkDepartment of Physics, Imperial College London , Prince Consort Road, SW7 2AZ London ,Eva-Maria AhrerMax Planck Institute for Astronomy (MPIA) , Königstuhl 17, D-69117 Heidelberg ,Anna B. T. PenzlinDepartment of Physics, Imperial College London , Prince Consort Road, SW7 2AZ London ,James E. OwenDepartment of Physics, Imperial College London , Prince Consort Road, SW7 2AZ London ,Richard A BoothSchool of Physics and Astronomy, University of Leeds , Leeds LS2 9JT ,Lili AldersonSchool of Physics, University of Bristol , HH Wills Physics Laboratory, Tyndall Avenue, Bristol BS8 1TL ,Duncan ChristieMax Planck Institute for Astronomy (MPIA) , Königstuhl 17, D-69117 Heidelberg ,Alastair B ClaringboldCentre for Exoplanets and Habitability, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL ,E. Esparza-BorgesDepartamento de Astrofísica, Universidad de La Laguna , San Cristóbal de La Laguna, E-38200 Tenerife ,Chloe FisherDepartment of Physics, University of Oxford , Keble Road, Oxford OX1 3RH ,Mercedes López‐MoralesCenter for Astrophysics, Harvard and Smithsonian , 60 Garden St, Cambridge, MA 02138 ,Nathan J. MayneDepartment of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter , Exeter EX4 4QL ,Mason McCormackDepartment of Astronomy and Astrophysics, University of Chicago , IL 60657 ,Annabella MeechCenter for Astrophysics, Harvard and Smithsonian , 60 Garden St, Cambridge, MA 02138 ,Vatsal PanwarCentre for Exoplanets and Habitability, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL ,Diana PowellDepartment of Astronomy and Astrophysics, University of Chicago , IL 60657 ,Denis E. SergeevDepartment of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter , Exeter EX4 4QL ,Jake TaylorDepartment of Physics, University of Oxford , Keble Road, Oxford OX1 3RH ,Shang‐Min TsaiDepartment of Earth and Planetary Sciences, University of California , Riverside, CA 92521 ,Daniel T. ValentineSchool of Physics, University of Bristol , HH Wills Physics Laboratory, Tyndall Avenue, Bristol BS8 1TL ,Hannah R. WakefordSchool of Physics, University of Bristol , HH Wills Physics Laboratory, Tyndall Avenue, Bristol BS8 1TL ,P. J. WheatleyCentre for Exoplanets and Habitability, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL ,Maria ZamyatinaDepartment of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter , Exeter EX4 4QL ,

2024en

ABI

Аннотация

ABSTRACT A primary objective of exoplanet atmosphere characterization is to learn about planet formation and evolution, however, this is challenged by degeneracies. To determine whether differences in atmospheric composition can be reliably traced to differences in evolution, we are undertaking a transmission spectroscopy survey with JWST to compare the compositions of a sample of hot Jupiters that have different orbital alignments around F stars above the Kraft break. Under the assumption that aligned planets migrate through the inner disc, while misaligned planets migrate after disc dispersal, the act of migrating through the inner disc should cause a measurable difference in the C/O between aligned and misaligned planets. We expect the amplitude and sign of this difference to depend on the amount of planetesimal accretion and whether silicates accreted from the inner disc release their oxygen. Here, we identify all known exoplanets that are suitable for testing this hypothesis, describe our JWST survey, and use noise simulations and atmospheric retrievals to estimate our survey’s sensitivity. With the selected sample of four aligned and four misaligned hot Jupiters, we will be sensitive to the predicted differences in C/O between aligned and misaligned hot Jupiters for a wide range of model scenarios.

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Идентификаторы

DOI: 10.1093/rasti/rzae043

Цитирования и источники

Цитирований: 2Использованных источников: 0

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