A planetesimal orbiting within the debris disc around a white dwarf star

@article{Manser2019APO,
  title={A planetesimal orbiting within the debris disc around a white dwarf star},
  author={Christopher J. Manser and Boris T. G{\"a}nsicke and Siegfried Eggl and Mark Andrew Hollands and Paula Izquierdo and Detlev Koester and John D. Landstreet and Wladimir Lyra and Thomas R. Marsh and Farzana Meru and Alexander J. Mustill and Pablo Rodr{\'i}guez-Gil and Odette Toloza and Dimitri Veras and David J. Wilson and Matthew R. Burleigh and Melvyn B. Davies and Jay Farihi and Nicola Pietro Gentile Fusillo and Domitilla de Martino and Steven G. Parsons and Andreas Quirrenbach and Roberto Raddi and Sabine Reffert and Melania Del Santo and Matthias R. Schreiber and Roberto Silvotti and Silvia Toonen and Eva Villaver and Mark C. Wyatt and Siyi Xu and Simon F. Portegies Zwart},
  journal={Science},
  year={2019},
  volume={364},
  pages={66 - 69}
}
A low-mass planet around a white dwarf Numerous exoplanets have been detected around Sun-like stars. These stars end their lives as white dwarfs, which should inherit any surviving planetary systems. Manser et al. found periodic shifts in emission lines from a disc of gas orbiting around a white dwarf (see the Perspective by Fossati). They used numerical simulations to show that the most likely explanation for the spectral shifts is a low-mass planet orbiting within the disc. The planet must be… 

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