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• W2201367495 abstract "Motivated by recent discussions, both in private and in the literature, we use a Monte Carlo simulation of planetary systems to investigate sources of bias in determining the mass-radius distribution of exoplanets for the two primary techniques used to measure planetary masses---Radial Velocities (RVs) and Transit Timing Variations (TTVs). We assert that mass measurements derived from these two methods are comparably reliable---as the physics underlying their respective signals is well understood. Nevertheless, their sensitivity to planet mass varies with the properties of the planets themselves. We find that for a given planet size, the RV method tends to find planets with higher mass while the sensitivity of TTVs is more uniform. This ``sensitivity bias'' implies that a complete census of TTV systems is likely to yield a more robust estimate of the mass-radius distribution provided there are not important physical differences between planets near and far from mean-motion resonance. We discuss differences in the sensitivity of the two methods with orbital period and system architecture, which may compound the discrepancies between them (e.g., short period planets detectable by RVs may be more dense due to atmospheric loss). We advocate for continued mass measurements using both approaches as a means both to measure the masses of more planets and to identify potential differences in planet structure that may result from their dynamical and environmental histories." @default.
• W2201367495 created "2016-06-24" @default.
• W2201367495 creator A5043685293 @default.
• W2201367495 date "2016-01-29" @default.
• W2201367495 modified "2023-10-18" @default.
• W2201367495 title "Sensitivity bias in the mass–radius distribution from transit timing variations and radial velocity measurements" @default.
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• W2201367495 doi "https://doi.org/10.1093/mnras/stw241" @default.
• W2201367495 hasPublicationYear "2016" @default.
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