Show simple item record

dc.contributor.authorBarnes, J R
dc.contributor.authorCameron, A C
dc.contributor.authorDonati, J F
dc.contributor.authorJames, D J
dc.contributor.authorMarsden, S C
dc.contributor.authorMengel, M
dc.contributor.authorPetit, P
dc.contributor.editorFavata, F
dc.contributor.editorHussain, G A J
dc.contributor.editorBattrick, B
dc.date.accessioned2011-12-20T12:01:12Z
dc.date.available2011-12-20T12:01:12Z
dc.date.issued2005
dc.identifier.citationBarnes , J R , Cameron , A C , Donati , J F , James , D J , Marsden , S C , Mengel , M & Petit , P 2005 , The decrease in differential rotation with decreasing stellar mass in a sample of young rapidly rotating main sequence stars . in F Favata , G A J Hussain & B Battrick (eds) , Proceedings of the 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - Proceedings, Vols 1 and 2 . European Space Agency , PARIS , pp. 95-99 , 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun , Hamburg , 5/07/04 .
dc.identifier.citationconference
dc.identifier.isbn92-9092-871-9
dc.identifier.otherPURE: 497114
dc.identifier.otherPURE UUID: c5c6d39c-535f-4c3d-b431-694b549e50d6
dc.identifier.otherWOS: 000231306900012
dc.identifier.otherScopus: 23844557168
dc.identifier.urihttp://hdl.handle.net/2299/7405
dc.description.abstractIn the Sun, global fluid circulation generates the large-scale magnetic field through cyclic dynamo action. Shear at the solar core/convection zone interface ensures that the convection zone does not rotate as a solid body. At the solar surface, this leads to the equatorial regions completing one more rotation than the polar regions every similar to 120 d. Similar surface rotation patterns axe observable on other stars, allowing us to determine how the fluid circulation patterns that drive their dynamos depend on fundamental stellar parameters such as mass, age and rotation rate. Here we present measurements for the differential rotation in an homogeneous sample of young, rapidly-rotating single G2V to M2V stars. By using Doppler imaging to measure the dependence of starspot rotation rates as a function of latitude, we find that the magnitude of the surface differential rotation shear decreases with decreasing effective temperature. The implied approach to solid body rotation with increasing relative convection zone depth implies that the dynamo mechanism operating in low-mass stars may be substantially different from that in the Sun.en
dc.format.extent5
dc.language.isoeng
dc.publisherEuropean Space Agency
dc.relation.ispartofProceedings of the 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - Proceedings, Vols 1 and 2
dc.subjectstars : imaging
dc.subjectCOOL ACTIVE STARS
dc.subjectM-DWARFS
dc.subjectHK AQR
dc.subjectEVOLUTION
dc.subjectBINARIES
dc.subjectPERIOD
dc.titleThe decrease in differential rotation with decreasing stellar mass in a sample of young rapidly rotating main sequence starsen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2005
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record