Spiral-arm Substructures in the Asymmetrical Dust Rings of the Circumstellar Disk MWC 758

@article{Shen2020SpiralarmSI,
  title={Spiral-arm Substructures in the Asymmetrical Dust Rings of the Circumstellar Disk MWC 758},
  author={Bo-Ting Shen and Ya-Wen Tang and Patrick M. Koch},
  journal={The Astrophysical Journal},
  year={2020},
  volume={904}
}
Asymmetrical features in disks provide indirect evidence of embedded objects, such as planets. Observed with the Atacama Large Millimeter/submillimeter Array (ALMA), the circumstellar disk in MWC 758 traced with thermal dust continuum emission at wavelengths of 0.9 mm with an angular resolution up to 01 (15 au) exhibits an asymmetrical dust ring with additional features. In order to analyze the structures azimuthally and radially, we split the dust ring into small segments in azimuth. For each… 

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