J/A+A/520/A52ivo://CDS.VizieR/J/A+A/520/A52doi:10.26093/cds/vizier.35200052CDSStrassmeier K.G.Granzer T.Kopf M.Weber M.Kueker M.Reegen P.,Rice J.B.Matthews J.M.Kuschnig R.Rowe J.F.Guenther D.B.,Moffat A.F.J.Rucinski S.M.Sasselov D.Weiss W.W.2017-07-03T14:25:20Z2010-10-04T09:18:29ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgiant-starsradial-velocityThe single rapidly-rotating G0 giant 31 Comae has been a puzzle because of the absence of photometric variability despite its strong chromospheric and coronal emissions. As a Hertzsprung-gap giant, it is expected to be at the stage of rearranging its moment of inertia, hence likely also its dynamo action, which could possibly be linked with its missing photospheric activity. Our aim is to detect photospheric activity, obtain the rotation period, and use it for a first Doppler image of the star's surface. Its morphology could be related to the evolutionary status.2010A&A...520A..52Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/520/A52CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/520/A52https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/520/A52http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/520/A52https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/520/A52https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/520/A52http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/520/A52GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/520/A52/table2Radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservation datestime.epoch;obsnullableHJDHeliocentric Julian date of observationdtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatJ/A+A/520/A52/table3KPNO radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateUT Datetime.epochnullableHJDHeliocentric Julian datedtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RV (1)km/sstat.errorfloatRefStarReference star (2)meta.idchar