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astro-ph.EP2020★ 9 cited
Global Spiral Density Wave Modes in Protoplanetary Disks: Morphology of Spiral Arms
Enze Chen, Si-Yue Yu, Luis C. Ho
We analyze two-armed global spiral density wave modes generated by gravitational instability in razor-thin, non-viscous, self-gravitating protoplanetary disks to understand the dep…
astro-ph.EP2019★ 16 cited
A Tight Relation between Spiral Arm Pitch Angle and Protoplanetary Disk Mass
Si-Yue Yu, Luis C. Ho, Zhaohuan Zhu
We use two-dimensional Fourier transformation to measure the pitch angle () of the dominant spiral Fourier mode of well-defined spiral arms in 13 protoplanetary disks, making us…