Uncovering the planets and stellar activity of CoRoT-7 using only radial velocities

  title={Uncovering the planets and stellar activity of CoRoT-7 using only radial velocities},
  author={Jo{\~a}o P. Faria and Rapha{\"e}lle D. Haywood and Brendon J. Brewer and Pedro Figueira and Mahmoudreza Oshagh and Alexandre Santerne and Nuno C. Santos},
  journal={arXiv: Earth and Planetary Astrophysics},
Stellar activity can induce signals in the radial velocities of stars, complicating the detection of orbiting low-mass planets. We present a method to determine the number of planetary signals present in radial-velocity datasets of active stars, using only radial-velocity observations. Instead of considering separate fits with different number of planets, we use a birth-death Markov chain Monte Carlo algorithm to infer the posterior distribution for the number of planets in a single run. In a… 

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