Aigrain Lab

University of Oxford

- · United Kingdom

ERC-funded
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ERC Consolidator Grant · 2019

Overcoming stellar activity in radial velocity planet searches

Radial velocity (RV) planet searches are a key exoplanet detection method, and one of the only ways to measure a planet's mass. The best RV instruments today reach precisions well below 1 m/s, something which would have seemed impossible 30 years ago. The key factor limiting the sensitivity of RV surveys now is stellar activity. Regions of enhanced magnetic flux on the stellar surface alter the shape of absorption lines in the stellar spectrum, and perturb the measured RVs. I have developed physically motivated but flexible, data-driven methods to disentangle planets from activity in RV data, which are critical to the success of future surveys. I now propose to apply these state-of-the-art…

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