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Warping away gravitational instabilities in protoplanetary discs
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Rowther, Sahl, Nealon, Rebecca and Meru, Farzana (2022) Warping away gravitational instabilities in protoplanetary discs. The Astrophysical Journal, 925 (2). 163. doi:10.3847/1538-4357/ac3975 ISSN 0004-637X.
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Official URL: https://doi.org/10.3847/1538-4357/ac3975
Abstract
We perform three-dimensional smoothed-particle hydrodynamics simulations of warped, non-coplanar gravitationally unstable discs to show that as the warp propagates through the self-gravitating disk, it heats up the disk rendering it gravitationally stable, thus losing their spiral structure and appearing completely axisymmetric. In their youth, protoplanetary discs are expected to be massive and self-gravitating, which results in nonaxisymmetric spiral structures. However recent observations of young protoplanetary discs with the Atacama Large Millimeter/submillimeter Array have revealed that discs with large-scale spiral structure are rarely observed in the midplane. Instead, axisymmetric discs, with some also having ring and gap structures, are more commonly observed. Our work invloving warps, non-coplanar disk structures that are expected to commonly occur in young discs, potentially resolves this discrepancy between observations and theoretical predictions. We demonstrate that they are able to suppress the large-scale spiral structure of self-gravitating protoplanetary discs.
| Item Type: | Journal Article | |||||||||||||||
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| Subjects: | Q Science > QB Astronomy | |||||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||
| Library of Congress Subject Headings (LCSH): | Protoplanetary disks, Sun -- Gravity | |||||||||||||||
| Journal or Publication Title: | The Astrophysical Journal | |||||||||||||||
| Publisher: | Institute of Physics Publishing, Inc. | |||||||||||||||
| ISSN: | 0004-637X | |||||||||||||||
| Official Date: | 3 February 2022 | |||||||||||||||
| Dates: |
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| Volume: | 925 | |||||||||||||||
| Number: | 2 | |||||||||||||||
| Number of Pages: | 10 | |||||||||||||||
| Article Number: | 163 | |||||||||||||||
| DOI: | 10.3847/1538-4357/ac3975 | |||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||
| Publication Status: | Published | |||||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
| Date of first compliant deposit: | 26 April 2022 | |||||||||||||||
| Date of first compliant Open Access: | 27 April 2022 | |||||||||||||||
| RIOXX Funder/Project Grant: |
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