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

ABSTRACT 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 mod...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2020-12, Vol.499 (4), p.5059-5074
Main Authors: Xuan, Jerry W, Kennedy, Grant M, Wyatt, Mark C, Yelverton, Ben
Format: Article
Language:English
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Summary:ABSTRACT 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 (ΔI) solutions. The most aligned solutions give ΔI = 17°–32° for HD 113337 and ΔI = 21°–45○ for HD 38529 (both 1σ). In both systems, there is a small probability (
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/staa3155