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Stellar noise and planet detection. II. Radial-velocity noise induced by magnetic cycles

Dumusque, Xavier ; Lovis, Cristophe ; Udry, Stephane ; Santos, Nuno C.

In: Proceedings of the International Astronomical Union, 2010, vol. 6, no. S276, p. 530-532

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    Titre
    • Stellar noise and planet detection. II. Radial-velocity noise induced by magnetic cycles
    Auteur
    • Dumusque, Xavier. Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch
    • Lovis, Cristophe. Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch
    • Udry, Stephane. Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch
    • Santos, Nuno C.. Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Proceedings of the International Astronomical Union, 2010, vol. 6, no. S276, p. 530-532. Cambridge University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:302559
    Summary
    For the 451 stars of the HARPS high precision program, we study correlations between the radial-velocity (RV) variation and other parameters of the Cross Correlated Function (CCF). After a careful target selection, we found a very good correlation between the slope of the RV-activity index (log(R'HK)) correlation and the Teff for dwarf stars. This correlation allow us to correct RV from magnetic cycles given the activity index and the Teff