Hostname: page-component-7dd5485656-wxk4p Total loading time: 0 Render date: 2025-10-30T23:43:14.226Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  10 November 2011

Xavier Dumusque ,
Cristophe Lovis ,
Stephane Udry  and
Nuno C. Santos
Xavier Dumusque
Affiliation:
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
Cristophe Lovis
Affiliation:
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch
Stephane Udry
Affiliation:
Observatoire de Genève, 51 ch. des Maillettes, 1290 Sauverny, Switzerland email: xavier.dumusque@unige.ch
Nuno C. Santos
Affiliation:
Centro de Astrofísica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

planetary systemsstars: activitytechniques: radial velocities

References

Noyes, R., et al. 1984, ApJ, 279, 763CrossRefGoogle Scholar
Meunier, N., Desort, M., & Lagrange, A.-M. 2010, A&A, 512, A39Google Scholar
Dravins, D. 1982, ARAA, 20, 61CrossRefGoogle Scholar
Gray, D. F. 2009, ApJ, 697, 1032CrossRefGoogle Scholar