Chromospheric activity and rotation of FGK stars in the solar vicinity - An estimation of the radial velocity jitter

  title={Chromospheric activity and rotation of FGK stars in the solar vicinity - An estimation of the radial velocity jitter},
  author={R. M. Mart{\'i}nez-Arn{\'a}iz and J. Maldonado and David Montes and Carlos Eiroa and Benjamı́n Montesinos and Universidad Complutense de Madrid and Universidad Aut'onoma de Madrid and Laex and Cab},
  journal={Astronomy and Astrophysics},
Context. Chromospheric activity produces both photometric and spectroscopic variations that can be mistaken as planets. Large spots crossing the stellar disc can produce planet-like periodic variations in the light curve of a star. These spots clearly affect the spectral line profiles, and their perturbations alter the line centroids creating a radial velocity jitter that might “contaminate” the variations induced by a planet. Precise chromospheric activity measurements are needed to estimate… Expand
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