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Moving beyond stellar activity limitations to detect other Earths

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Stellar variability strongly affects radial measurements and as a consequence limits the detectability and mass characterisation of low mass planets with radial velocity techniques. After introducing this challenge, I will present the stellar processes affecting radial velocity measurements at various temporal scales and the approach we have developed: we have used our very good knowledge of solar activity to build a large amount of realistic synthetic time series for other solar-type stars. I will show how this approach allowed us to understand better the limitations, leading us to propose a new mitigating method and to estimate the performance of Earth-like planet in the habitable zone detections.

This talk is part of the Institute of Astronomy Colloquia series.

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