A multi-wavelength look at the GJ 9827 system -- No evidence of extended atmospheres in GJ 9827 b and d from HST and CARMENES data

@inproceedings{Carleo2021AML,
  title={A multi-wavelength look at the GJ 9827 system -- No evidence of extended atmospheres in GJ 9827 b and d from HST and CARMENES data},
  author={I. Carleo and A. Youngblood and S. Redfield and N. C. Barris and T. Ayres and H. Vannier and L. Fossati and E. Pall'e and J. Livingston and A. Lanza and P. Niraula and J. Alvarado-G{\'o}mez and G. Chen and D. Gandolfi and E. Guenther and J. Linsky and E. Nagel and N. Narita and L. Nortmann and E. Shkolnik and M. Stangret},
  year={2021}
}
GJ 9827 is a bright star hosting a planetary system with three transiting planets. As a multi-planet system with planets that sprawl within the boundaries of the radius gap between terrestrial and gaseous planets, GJ 9827 is an optimal target to study the evolution of the atmospheres of close-in planets with a common evolutionary history and their dependence from stellar irradiation. Here, we report on the Hubble Space Telescope (HST) and CARMENES transit observations of GJ 9827 planets b and d… Expand

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