SIMBAD references

2017MNRAS.471L.125R - Mon. Not. R. Astron. Soc., 471, L125-L130 (2017/October-2)

Pinning down the mass of Kepler-10c: the importance of sampling and model comparison.

RAJPAUL V., BUCHHAVE L.A. and AIGRAIN S.

Abstract (from CDS):

Initial radial velocity (RV) characterization of the enigmatic planet Kepler-10c suggested a mass of ∼17 M, which was remarkably high for a planet with radius 2.32 R; further observations and subsequent analysis hinted at a (possibly much) lower mass, but masses derived using RVs from two different spectrographs (HARPS-N and HIRES) were incompatible at a 3σ level. We demonstrate here how such mass discrepancies may readily arise from suboptimal sampling and/or neglecting to model even a single coherent signal (stellar, planetary or otherwise) that may be present in RVs. We then present a plausible resolution of the mass discrepancy, and ultimately characterize Kepler-10c as having mass 7.37–1.19+1.32 M, and mean density 3.14+0.63–0.55 g cm–3.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - techniques: radial velocities - stars: activity - stars: individual: Kepler-10 - planetary systems - planetary systems

Simbad objects: 4

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