Chromospheric activity of stars with planets

  title={Chromospheric activity of stars with planets},
  author={B. L. Canto Martins and Maria Lidu{\'i}na das Chagas and Sanzia Alves and I. C. Le{\~a}o and L. P. de Souza Neto and J. R. De Medeiros},
  journal={Astronomy and Astrophysics},
Context. Signatures of chromospheric activity enhancement have been found for a dozen stars, pointing to a possible star-planet interaction. Nevertheless in the coronal activity regime, there is no conclusive observational evidence of such an interaction. Does star-planet interaction manifest itself only for a few particular cases, without having a major effect on stars with planets in general? Aims. We aim to add additional observational constraints to support or reject the major effects of… 

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