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

C. Lovis; N. C. Santos; S. Udry; X. Dumusque

arxiv: 1011.5581 · v1 · pith:ZBM6YFJHnew · submitted 2010-11-25 · 🌌 astro-ph.EP

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

X. Dumusque , C. Lovis , S. Udry , N. C. Santos This is my paper

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keywords correlationcyclesindexmagneticnoiseradial-velocitystarsteff

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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.

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