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16 April 2024

» arxiv » 2004.1204

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Disk tearing in a young triple star system with misaligned disk/orbit planes
Stefan Kraus ; Alexander Kreplin ; Alison K. Young ; Matthew R. Bate ; John D. Monnier ; Tim J. Harries ; Henning Avenhaus ; Jacques Kluska ; Anna S. E. Laws ; Evan A. Rich ; Matthew Willson ; Alicia N. Aarnio ; Fred C. Adams ; Sean M. Andrews ; Narsireddy Anugu ; Jaehan Bae ; Theo ten Brummelaar ; Nuria Calvet ; Michel Curé ; Claire L. Davies ; Jacob Ennis ; Catherine Espaillat ; Tyler Gardner ; Lee Hartmann ; Sasha Hinkley ; Aaron Labdon ; Cyprien Lanthermann ; Jean-Baptiste LeBouquin ; Gail H. Schaefer ; Benjamin R. Setterholm ; David Wilner ; Zhaohuan Zhu ;
Date:	2 Apr 2020
Abstract:	In young multiple stellar systems the gravitational influence of the stars shapes the circumstellar disk, controlling accretion and the material available for planet formation. Our observations of the triple system GW Orionis provide direct evidence for disk tearing, where the gravitational torques due to misaligned disk/orbit planes warp the disk and break the inner disk into precessing rings. We image an eccentric ring that is misaligned with respect to the orbital planes and outer disk, and casts shadows on the strongly warped intermediate disk. Our ring/warp geometry constraints and the fully characterized perturber orbits make the system a potential Rosetta Stone for studying disk hydrodynamics. The ring might offer suitable conditions for planet formation, providing a mechanism for forming wide-separation planets on highly oblique orbits.
Source:	arXiv, 2004.1204
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