Exoplanet characterisation in the longest known resonant chain: the K2-138 system seen by HARPS

  title={Exoplanet characterisation in the longest known resonant chain: the K2-138 system seen by HARPS},
  author={T. L{\'o}pez and S. C. C. Barros and A. Santerne and M. Deleuil and V. Adibekyan and J. Almenara and David J Armstrong and B. Brugger and D. Barrado and D. Bayliss and I. Boisse and A. Bonomo and F. Bouchy and D. A. Brown and E. Carli and O. Demangeon and X. Dumusque and R. D'iaz and J. Faria and P. Figueira and E. Foxell and H. Giles and G. H'ebrard and S. Hojjatpanah and J. Kirk and J. Lillo-box and C. Lovis and O. Mousis and H. J. D. N'obrega and L. Nielsen and J. J. Neal and H. P. Osborn and F. Pepe and D. Pollacco and N. Santos and S. Sousa and S. Udry and A. Vigan and P. Wheatley},
  journal={Astronomy and Astrophysics},
  • T. López, S. C. C. Barros, +36 authors P. Wheatley
  • Published 2019
  • Physics
  • Astronomy and Astrophysics
  • The detection of low-mass transiting exoplanets in multiple systems brings new constraints to planetary formation and evolution processes and challenges the current planet formation theories. Nevertheless, only a mere fraction of the small planets detected by Kepler and K2 have precise mass measurements, which are mandatory to constrain their composition. We aim to characterise the planets that orbit the relatively bright star K2-138. This system is dynamically particular as it presents the… CONTINUE READING
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