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dc.contributor.authorBarnes, J.R.
dc.contributor.authorCollier Cameron, A.
dc.contributor.authorJames, D.J.
dc.contributor.authorWatson, C.A.
dc.contributor.authorVincent, F.
dc.contributor.authorDonati, J-F.
dc.date.accessioned2008-01-30T10:42:49Z
dc.date.available2008-01-30T10:42:49Z
dc.date.issued2000
dc.identifier.citationBarnes , J R , Collier Cameron , A , James , D J , Watson , C A , Vincent , F & Donati , J-F 2000 , Starspot coverage and differential rotation on PZ Tel . in In: Stellar Clusters and Associations: Convection, Rotation, and Dynamos - ASP Conf Series 198 . Astronomical Society of the Pacific , pp. 345-8 .
dc.identifier.isbn1-58381-025-0
dc.identifier.otherPURE: 143180
dc.identifier.otherPURE UUID: 0b5afcaf-6caa-4f12-b9c1-997b93919e1b
dc.identifier.otherdspace: 2299/1476
dc.identifier.otherScopus: 0033750942
dc.identifier.urihttp://hdl.handle.net/2299/1476
dc.descriptionOriginal paper can be found at: http://www.astrosociety.org/pubs/cs/195-221.html--Copyright Astronomical Society of the Pacific
dc.description.abstractWe present Doppler images of the young, late-type star, PZ Tel from spectroscopic observations at two epochs. The 0.95d period necessitated dual-site observations in order to obtain full phase coverage. By making use of the large number of spectral lines available in an echelle spectrum, least squares deconvolution is used to derive a series of low noise absorption profiles. The high S:N ratio profiles enable increased latitude discrimination in Doppler imaging. The resulting maximum entropy reconstructions reveal the presence of starspots at all latitudes. Since the lifetimes of individual spots are greater than the two day gap between data sets, we cross-correlated constant-latitude strips from the images, in order to derive a measure of rotation as a function of latitude. The close agreement with the solar and AB Doradus (K0V) values, suggests that the differential rotation rate is at most only weakly dependent upon rotation rate and spectral type.en
dc.language.isoeng
dc.publisherAstronomical Society of the Pacific
dc.relation.ispartofIn: Stellar Clusters and Associations: Convection, Rotation, and Dynamos - ASP Conf Series 198
dc.rightsOpen
dc.titleStarspot coverage and differential rotation on PZ Telen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2000
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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