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Li abundances and chromospheric activity of BY Dra type stars

dc.contributor.authorMISHENINA, Tamara V.
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorSOUBIRAN, C.
dc.contributor.authorKOVTYUKH, Valery V.
dc.contributor.authorBELIK, Stanislav I.
dc.date.issued2010
dc.date.conference2010
dc.description.abstractEnAtmospheric parameters and Li abundances have been determined for 162 stars observed at high resolution, high signal to noise ratio with the ELODIE echelle spectrograph (OHP, France). Among them, about 70 stars are active stars with a large fraction of BY Dra type stars. For all stars, rotational velocities were obtained with a calibration of the cross-correlation function, effective temperatures by the line depth ratio method, surface gravities by the parallaxe method and by the ionization balance of iron. The frequency of stars with observed lithium is significantly higher in active stars than in non active stars. Among active stars, no clear correlation has been found between different indicators of activity for our sample stars, but some correlation of an index R′H K and vsini is observed.
dc.language.isoen
dc.source.titleLight Elements in the Universe
dc.subject.enStars: abundances
dc.subject.enfundamental parameters
dc.subject.enactivity
dc.title.enLi abundances and chromospheric activity of BY Dra type stars
dc.typeCommunication dans un congrès
dc.identifier.doi10.1017/S1743921310004394
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]
bordeaux.page343-344
bordeaux.volume268
bordeaux.countryFR
bordeaux.title.proceedingLight Elements in the Universe
bordeaux.peerReviewedoui
hal.identifierhal-00521984
hal.version1
hal.invitednon
hal.proceedingsoui
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00521984v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Light%20Elements%20in%20the%20Universe&rft.date=2010&rft.volume=268&rft.spage=343-344&rft.epage=343-344&rft.au=MISHENINA,%20Tamara%20V.&SOUBIRAN,%20C.&KOVTYUKH,%20Valery%20V.&BELIK,%20Stanislav%20I.&rft.genre=unknown


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