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Paper: Searching for Terrestrial Planets in the Habitable Zone of M Dwarfs
Volume: 321, Extrasolar Planets: Today and Tomorrow
Page: 84
Authors: Kurster, M.; Endl, M.
Abstract: We present results from our search program for terrestrial planets around M dwarfs with the VLT+UVES. We demonstrate the achieved RV precision of ≈ 2:5 ms−1. Different variability and noise components are disentangled for Barnard's star by means of Pooled Variance Analysis. Stellar activity effects and implications for convection properties are discussed. New data complement our previously published ones showing an excellent match with the predicted RV secular acceleration of Barnard's star. Mass upper limits to planetary companions in circular orbits are shown for Barnard's star as well as for Proxima Centauri. For both stars we can exclude planets with m sin i > 3 MEarth at the inner edge of their respective habitable zone up to > 5 MEarth at the outer edge (based on observations collected at the European Southern Observatory, Paranal, Chile).
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