Titlebook: Radial-velocity Searches for Planets Around Active Stars; Rapha?lle D. Haywood Book 2016 Springer International Publishing Switzerland 201

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Book 2016s for distinguishing genuine planetary signals from false positives produced by stellar magnetic activity..The findings of this thesis represent a significant step towards determining the masses of potentially habitable planets orbiting Sun-like stars.?.

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Introduction: The Hunt for Extra-Solar Planets,ades, developments in instrumentation and observation techniques have led to revolutionary discoveries: we now know that planets revolving around other stars than our Sun exist, and better still, they appear to be very common.

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Stellar Activity as a Source of Radial-Velocity Variability, variability. This chapter provides a review of the manifestations of magnetic activity, their impact on photometric and spectroscopic observations, and the analysis techniques that have been developed in recent years to account for activity-induced RV signals. I also present the target selection cr

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A Toolkit to Detect Planets Around Active Stars,ntroducing Gaussian processes, which are a powerful and elegant way to model correlated noise. I will start from the very basics of Gaussian distributions, leading up?to how I incorporate them in my model to account for stellar activity signals. I then present the model that I use to fit RV observat

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An Exploration into the Radial-Velocity Variability of the Sun,pler signature of orbiting planets. This has resulted in several false detections (see Queloz et?al. .; Bonfils et?al. .; Huélamo et?al. .; Boisse et?al. ., .; Gregory .; Haywood et?al. .; Santos et?al. .; Robertson et?al. . and many others). Understanding the RV signatures of stellar activity, in p

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Conclusion: Next Steps and Aims for the Future,aced by the exoplanet community today, and we must overcome this barrier in order to become able to routinely detect Earth-mass planets at greater distances from their stars. Building on my thesis work, I now intend to tackle this issue in two ways. First, I plan to incorporate activity proxies into

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