090207

We propose joint XMM-Newton and HST observations of the nearby young G-type star HIP 67522 hosting a close-in Jupiter-size transiting exoplanet discovered with TESS and possibly a second smaller body. The first confirmed planet in this young system (virgul17 Myr) is expected to be in a contraction phase toward its final size and possibly affected by photoevaporation. Our immediate objective is to reconstruct the full XUV spectrum and to assess the spectral and time variability of the host star. In this way we will characterize its activity level and the dose of high-energy irradiation in the planetary environment. This system is particularly suitable to investigate evolutionary paths of exoplanets in the mass-radius diagram and to provide constraints for planetary atmospheres modeling. [truncated! Please see actual data for full text]