The 21st Cambridge workshop on Cool Stars, Stellar Systems, and the Sun
Published January 30, 2023 | Version v1
Presentation Open

XUV Irradiation of Young Exoplanetary Atmospheres - Two study cases

Authors/Creators

  • 1. INAF Osservatorio Astronomico di Palermo
  • 2. UNIPA Dipartimento di FIsica e Chimica
  • 3. Centro de Astrobiologìa (CSIC-INTA)

Contributors

Description

Observations and modeling of stellar XUV emission in different evolutionary phases is fundamental to understand photochemistry and evaporation processes in exoplanetary atmospheres. As part of the on-going project THE StellaR PAth (Time-dependent High-Energy Radiation and Planetary Atmosphere interaction) we present initial results of our first two study cases of gaseous exoplanets irradiated by young solar-like stars, based on dedicated follow-up observations of the host stars with XMM-Newton and HST.
The systems are orbiting the young stars V1298 Tau and DS Tuc A, for which we derived spectral properties of the high-energy emission during quiescent and flaring states. We discuss short-term and long-term effects of the XUV irradiation on the planetary atmospheres.

Notes

We acknowledge financial contribution from the ASI-INAF agreement n.2018-16-HH.0 (THE StellaR PAth project), and from the ARIEL ASI-INAF agreement n.2021-5-HH.0. We also acknowledge partial support by the projects HOT-ATMOS (PRIN INAF 2019) and PLATEA (ASI-INAF agreement n.2018-16-HH.0).

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