Stellar parameters and chemical abundances of 223 evolved stars with and without planets

  title={Stellar parameters and chemical abundances of 223 evolved stars with and without planets},
  author={Emiliano Jofr'e and Romina Petrucci and C. Saffe and Leila Saker and Elizabeth Artur de la Villarmois and Carolina Chavero and M. G'omez and P. J. D. Mauas},
  journal={Astronomy and Astrophysics},
Aims. We present fundamental stellar parameters, chemical abundances, and rotational velocities for a sample of 86 evolved stars with planets (56 giants; 30 subgiants), and for a control sample of 137 stars (101 giants; 36 subgiants) without planets. The analysis was based on both high signal-to-noise and resolution echelle spectra. The main goals of this work are i) to investigate chemical differences between evolved stars that host planets and those of the control sample without planets; ii… Expand
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