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
Aggiungi alla tua lista- 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