Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori
We revisit the origin of the observed misaligned rings in the circumtriple disk around GW Ori. Previous studies appeared to disagree on whether disk breaking is caused by the differential precession driven in the disk by the triple star system. In this Letter, we show that the previous studies are i...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ada389 |
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| author | Jeremy L. Smallwood Stephen H. Lubow Rebecca G. Martin Rebecca Nealon |
| author_facet | Jeremy L. Smallwood Stephen H. Lubow Rebecca G. Martin Rebecca Nealon |
| author_sort | Jeremy L. Smallwood |
| collection | DOAJ |
| description | We revisit the origin of the observed misaligned rings in the circumtriple disk around GW Ori. Previous studies appeared to disagree on whether disk breaking is caused by the differential precession driven in the disk by the triple star system. In this Letter, we show that the previous studies are in agreement with each other when using the same set of parameters. But for observationally motivated parameters of a typical protoplanetary disk, the disk is unlikely to break due to interactions with the triple star system. We run three-dimensional hydrodynamical simulations of a circumtriple disk around GW Ori with different disk aspect ratios. For a disk aspect ratio typical of protoplanetary disks, H / r ≳ 0.05, the disk does not break. An alternative scenario for the gap's origin consistent with the expected disk aspect ratio involves the presence of circumtriple planets orbiting GW Ori. |
| format | Article |
| id | doaj-art-5b9db6ad049945d58458faf4723affc2 |
| institution | Kabale University |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal Letters |
| spelling | doaj-art-5b9db6ad049945d58458faf4723affc22025-01-17T17:33:54ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019791L1410.3847/2041-8213/ada389Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW OriJeremy L. Smallwood0https://orcid.org/0000-0002-4314-398XStephen H. Lubow1https://orcid.org/0000-0002-4636-7348Rebecca G. Martin2https://orcid.org/0000-0003-2401-7168Rebecca Nealon3https://orcid.org/0000-0003-0856-679XInstitute of Astronomy and Astrophysics , Academia Sinica, Taipei 10617, Taiwan, Republic of China; Homer L. Dodge Department of Physics and Astronomy, The University of Oklahoma , Norman, OK 73019, USASpace Telescope Science Institute , Baltimore, MD 21218, USANevada Center for Astrophysics, University of Nevada , Las Vegas, 4505 South Maryland Parkway, Las Vegas, NV 89154, USA; Department of Physics and Astronomy, University of Nevada , Las Vegas, 4505 South Maryland Parkway, Las Vegas, NV 89154, USACentre for Exoplanets and Habitability, University of Warwick , Coventry CV4 7AL, UK; Department of Physics, University of Warwick , Coventry CV4 7AL, UKWe revisit the origin of the observed misaligned rings in the circumtriple disk around GW Ori. Previous studies appeared to disagree on whether disk breaking is caused by the differential precession driven in the disk by the triple star system. In this Letter, we show that the previous studies are in agreement with each other when using the same set of parameters. But for observationally motivated parameters of a typical protoplanetary disk, the disk is unlikely to break due to interactions with the triple star system. We run three-dimensional hydrodynamical simulations of a circumtriple disk around GW Ori with different disk aspect ratios. For a disk aspect ratio typical of protoplanetary disks, H / r ≳ 0.05, the disk does not break. An alternative scenario for the gap's origin consistent with the expected disk aspect ratio involves the presence of circumtriple planets orbiting GW Ori.https://doi.org/10.3847/2041-8213/ada389Trinary starsProtoplanetary disksHydrodynamical simulationsPlanet formation |
| spellingShingle | Jeremy L. Smallwood Stephen H. Lubow Rebecca G. Martin Rebecca Nealon Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori The Astrophysical Journal Letters Trinary stars Protoplanetary disks Hydrodynamical simulations Planet formation |
| title | Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori |
| title_full | Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori |
| title_fullStr | Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori |
| title_full_unstemmed | Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori |
| title_short | Shedding Light on the Origin of the Broken Misaligned Circumtriple Disk around GW Ori |
| title_sort | shedding light on the origin of the broken misaligned circumtriple disk around gw ori |
| topic | Trinary stars Protoplanetary disks Hydrodynamical simulations Planet formation |
| url | https://doi.org/10.3847/2041-8213/ada389 |
| work_keys_str_mv | AT jeremylsmallwood sheddinglightontheoriginofthebrokenmisalignedcircumtriplediskaroundgwori AT stephenhlubow sheddinglightontheoriginofthebrokenmisalignedcircumtriplediskaroundgwori AT rebeccagmartin sheddinglightontheoriginofthebrokenmisalignedcircumtriplediskaroundgwori AT rebeccanealon sheddinglightontheoriginofthebrokenmisalignedcircumtriplediskaroundgwori |