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Paper: Pushing Down the Limits of RV Precision with HARPS
Volume: 398, Extreme Solar Systems
Page: 455
Authors: Lovis, C.; Mayor, M.; Pepe, F.; Queloz, D.; Udry, S.
Abstract: The HARPS instrument has led to the discovery of several hot Neptunes and/or super-Earths thanks to its RV precision below 1 ms−1. In this contribution we briefly review the various instrumental and stellar limitations that have to be overcome to detect these low RV amplitudes. Then we present high-cadence observations of stable, non-active stars indicating that low-mass planets may be very common. This could explain part of the RV variability at the ms−1 level, seen as noise if the number of measurements is not sufficient. We also discuss the prospects for measuring the mass of transiting super-Earths detected by space missions.
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