• Corpus ID: 234681179

Orbital migration and circularization of tidal debris by Alfv\'en-wave drag: circumstellar debris and pollution around white dwarfs

@inproceedings{Zhang2021OrbitalMA,
  title={Orbital migration and circularization of tidal debris by Alfv\'en-wave drag: circumstellar debris and pollution around white dwarfs},
  author={Yun Zhang and Shangfei Liu and Douglas N. C. Lin},
  year={2021}
}
A significant fraction of white dwarfs (WDs) exhibit signs of ongoing accretion of refractory elements at rates ∼ 10–10 kg s−1, among which, 37 WDs were detected to harbor dusty debris disks. Such a concurrence requires not only fertile reservoirs of planetary material, but also a high duty cycle of metal delivery. It has been commonly suggested that this material could be supplied by Solar System analogs of Main Belt asteroids or Kuiper Belt objects. Here we consider the primary progenitors of… 

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