Enhanced rotational mixing in the radiative zones of massive stars
| cam.issuedOnline | 2018-08-01 | |
| dc.contributor.author | Jermyn, AS | |
| dc.contributor.author | Tout, CA | |
| dc.contributor.author | Chitre, SM | |
| dc.contributor.orcid | Tout, Christopher [0000-0002-1556-9449] | |
| dc.date.accessioned | 2018-12-01T00:30:23Z | |
| dc.date.available | 2018-12-01T00:30:23Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | Convection in the cores of massive stars becomes anisotropic when they rotate. This anisotropy leads to a misalignment of the thermal gradient and the thermal flux, which in turn results in baroclinicity and circulation currents in the upper radiative zone. We show that this induces a much stronger meridional flow in the radiative zone than previously thought. This drives significantly enhanced mixing, though this mixing does not necessarily reach the surface. The extra mixing takes on a similar form to convective overshooting, and is relatively insensitive to the rotation rate above a threshold, and may help explain the large overshoot distances inferred from observations. This has significant consequences for the evolution of these stars by enhancing core-envelope mixing. | |
| dc.identifier.doi | 10.17863/CAM.33499 | |
| dc.identifier.eissn | 1365-2966 | |
| dc.identifier.issn | 0035-8711 | |
| dc.identifier.uri | https://www.repository.cam.ac.uk/handle/1810/286187 | |
| dc.language.iso | eng | |
| dc.publisher | Oxford University Press (OUP) | |
| dc.publisher.url | http://dx.doi.org/10.1093/mnras/sty1831 | |
| dc.subject | stars - evolution | |
| dc.subject | stars - interiors | |
| dc.subject | stars - rotation | |
| dc.title | Enhanced rotational mixing in the radiative zones of massive stars | |
| dc.type | Article | |
| dcterms.dateAccepted | 2018-07-08 | |
| prism.endingPage | 5446 | |
| prism.issueIdentifier | 4 | |
| prism.publicationDate | 2018 | |
| prism.publicationName | Monthly Notices of the Royal Astronomical Society | |
| prism.startingPage | 5427 | |
| prism.volume | 480 | |
| rioxxterms.licenseref.startdate | 2018-01-01 | |
| rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
| rioxxterms.type | Journal Article/Review | |
| rioxxterms.version | AM | |
| rioxxterms.versionofrecord | 10.1093/MNRAS/STY1831 |
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