Mutual inclinations between giant planets and their debris discs in HD 113337 and HD 38529

HD 113337 and HD 38529 host pairs of giant planets, a debris disc, and wide M-type stellar companions. We measure the disc orientation with resolved images from Herschel and constrain the three-dimensional orbits of the outer planets with Gaia DR2 and Hipparcos astrometry. Resolved disc modelling le...

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Published in:arXiv.org 2020-10
Main Authors: Xuan, Jerry W, Kennedy, Grant M, Wyatt, Mark C, Yelverton, Ben
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Language:English
Subjects:
Alignment
Astrometry
Debris
Extrasolar planets
Inclination
Misalignment
Planet formation
Planetary orbits
Protoplanetary disks
Saturn
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description HD 113337 and HD 38529 host pairs of giant planets, a debris disc, and wide M-type stellar companions. We measure the disc orientation with resolved images from Herschel and constrain the three-dimensional orbits of the outer planets with Gaia DR2 and Hipparcos astrometry. Resolved disc modelling leaves degeneracy in the disc orientation, so we derive four separate planet-disc mutual inclination (\(\Delta I\)) solutions. The most aligned solutions give \(\Delta I=17-32\deg\) for HD 113337 and \(\Delta I=21-45\deg\) for HD 38529 (both 1\(\sigma\)). In both systems, there is a small probability (
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subjects Alignment
Astrometry
Debris
Extrasolar planets
Inclination
Misalignment
Planet formation
Planetary orbits
Protoplanetary disks
Saturn
title Mutual inclinations between giant planets and their debris discs in HD 113337 and HD 38529
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