Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds

@article{Lillobox2020MassesFT,
  title={Masses for the seven planets in K2-32 and K2-233. Four diverse planets in resonant chain and the first young rocky worlds},
  author={J. Lillo-box and T. Lopez and A. Santerne and L. Nielsen and S. Barros and M. Deleuil and L. Acu{\~n}a and O. Mousis and S. Sousa and V. Adibekyan and David J Armstrong and D. Barrado and D. Bayliss and D. A. Brown and O. Demangeon and X. Dumusque and P. Figueira and S. Hojjatpanah and H. P. Osborn and N. Santos and S. Udry},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2020}
}
  • J. Lillo-box, T. Lopez, +18 authors S. Udry
  • Published 2020
  • Physics
  • arXiv: Earth and Planetary Astrophysics
  • High-precision planetary densities are key to derive robust atmospheric properties for extrasolar planets. Measuring precise masses is the most challenging part, especially in multi-planetary systems. We measure the masses and densities of a four-planet near resonant chain system (K2-32), and a young ($\sim400$ Myr old) planetary system consisting of three close-in small planets (K2-233). We obtained 199 new HARPS observations for K2-32 and 124 for K2-233 covering a more than three year… CONTINUE READING

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