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High-energy irradiation is a driver for atmospheric evaporation and mass lossin exoplanets. This work is based on data from eROSITA, the soft X-rayinstrument aboard SRG (Spectrum Roentgen Gamma) mission, as well as archivaldata from other missions, we aim to characterise the high-energy environment ofknown exoplanets and estimate their mass loss rates. We use X-ray sourcecatalogues from eROSITA, XMM-Newton, Chandra and ROSAT to derive X-rayluminosities of exoplanet host stars in the 0.2-2 keV energy band with anunderlying coronal, i.e. optically thin thermal spectrum. We present acatalogue of stellar X-ray and EUV luminosities, exoplanetary X-ray and EUVirradiation fluxes and estimated mass loss rates for a total of 287 exoplanets,96 among them being characterised for the first time from new eROSITAdetections. We identify 14 first time X-ray detections of transiting exoplanetsthat are subject to irradiation levels known to cause observable evaporationsignatures in other exoplanets, which makes them suitable targets for follow-upobservations.

Exoplanet X-ray irradiation and evaporation rates with eROSITA