The large-scale nebular pattern of a superwind binary in an eccentric orbit

@article{Kim2017TheLN,
  title={The large-scale nebular pattern of a superwind binary in an eccentric orbit},
  author={Hyosun Kim and Alfonso Trejo and Sheng-Yuan Liu and Raghvendra Sahai and Ronald E. Taam and Mark R. Morris and Naomi Hirano and I-Ta Hsieh},
  journal={Nature Astronomy},
  year={2017},
  volume={1},
  pages={0060}
}
The roughly spherical outer regions and aspherical inner regions of protoplanetary nebulae — here imaged by ALMA — are explained in terms of an embedded binary system with stars on eccentric orbits. 

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