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Table 2

Details of model runs.

Run Star Spectrum Spectrum Planet a Rotational
# quiescent flare [AU] period

1 HD 189733 ϵ Eri quiet ϵ Eri quiet + scaled Sun flare HD 189733b 0.031 Phase locked
2 HD 189733 ϵ Eri quiet ϵ Eri quiet + scaled AU Mic flare HD 189733b 0.031 Phase locked
3 HD 209458 Sun quiet Sun flare HD 209458b 0.047 Phase locked
4 AU Mic AU Mic quiet AU Mic flare HD 209458b 0.2 Phase locked
5 AU Mic AU Mic quiet AU Mic flare HD 209458b 1.0 10 h

Notes. Numbers are used to identify each run (#) and parameters of the star and planet modelled are provided. The flaring spectra for runs #1 and #2 are made up of the quiet spectrum for ϵ Eri (proxy for HD 189733) onto which is added the flare excess energy of either a solar flare (#1) or a flare on AU Mic (#2), scaled according to X-ray observations of flares on HD 189733 (see text for more details). In the cases where the planet is phase locked with its star, the rotational period is synchronised to the planet’s orbital period.

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