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dc.contributor.authorVIDOTTO, ALINEen
dc.date.accessioned2017-01-27T12:40:04Z
dc.date.available2017-01-27T12:40:04Z
dc.date.created2016en
dc.date.issued2016en
dc.date.submitted2016en
dc.identifier.citationSee V, Jardine M, Vidotto A.A, Donati J.-F, Boro Saikia S, Bouvier J, Fares R, Folsom C.P, Gregory S.G, Hussain G, Jeffers S.V, Marsden S.C, Morin J, Moutou C, do Nascimento J.D, Petit P, Waite I.A, The connection between stellar activity cycles and magnetic field topology, Monthly Notices of the Royal Astronomical Society, 462, 4, 2016, 4442 - 4450en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/79171
dc.description.abstractZeeman Doppler imaging has successfully mapped the large-scale magnetic fields of stars over a large range of spectral types, rotation periods and ages. When observed over multiple epochs, some stars show polarity reversals in their global magnetic fields. On the Sun, polarity reversals are a feature of its activity cycle. In this paper, we examine the magnetic properties of stars with existing chromospherically determined cycle periods. Previous authors have suggested that cycle periods lie on multiple branches, either in the cycle period-Rossby number plane or the cycle period-rotation period plane. We find some evidence that stars along the active branch show significant average toroidal fields that exhibit large temporal variations while stars exclusively on the inactive branch remain dominantly poloidal throughout their entire cycle. This lends credence to the idea that different shear layers are in operation along each branch. There is also evidence that the short magnetic polarity switches observed on some stars are characteristic of the inactive branch while the longer chromospherically determined periods are characteristic of the active branch. This may explain the discrepancy between the magnetic and chromospheric cycle periods found on some stars. These results represent a first attempt at linking global magnetic field properties obtained form ZDI and activity cyclesen
dc.format.extent4442en
dc.format.extent4450en
dc.relation.ispartofseriesMonthly Notices of the Royal Astronomical Societyen
dc.relation.ispartofseries462en
dc.relation.ispartofseries4en
dc.rightsYen
dc.subjectZeeman Doppler imagingen
dc.subject.lcshZeeman Doppler imagingen
dc.titleThe connection between stellar activity cycles and magnetic field topologyen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/vidottoaen
dc.identifier.rssinternalid144420en
dc.identifier.doihttp://dx.doi.org/10.1093/mnras/stw2010en
dc.rights.ecaccessrightsopenAccess
dc.identifier.rssurihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84994493539&doi=10.1093%2fmnras%2fstw2010&partnerID=40&md5=5fe5e44d433489f7746279a126639ceeen
dc.identifier.orcid_id0000-0001-5371-2675en


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