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Key takeaways * Flares occur during ~30% of transits, contaminating transit spectra via the transit light source effect. * We characterize the NIR line and continuum emission of flares for the first time, allowing us to model these events. * We mask lines and subtract flare models from the transit spectra, ~ finding up to 80% of contamination can be removed. * Flare mitigation may be a viable pathway to increase the impact of transit observations of small planets around active stars

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Key takeaways * Flares occur during ~30% of transits, contaminating transit spectra via the transit light source effect. * We characterize the NIR line and continuum emission of flares for the first time, allowing us to model these events. * We mask lines and subtract flare models from the transit spectra, ~ finding up to 80% of contamination can be removed. * Flare mitigation may be a viable pathway to increase the impact of transit observations of small planets around active stars
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Kelly Lepo (kellylepo@astrodon.social)'s status on Wednesday, 13-Sep-2023 01:41:57 JST Kelly Lepo
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One thing to come out of several talks this morning, is the importance of stellar flares in the Trappist 1 system.
The red dwarf in the Trappist 1 system has several flares per day that are similar to flares that happen once per month on the Sun. This tends to complicate planet transit methods and can cause false detections of molecules if you are not careful.
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In conversation about a year ago from astrodon.social permalink