(日本語) Trapping Low-mass Planets at the Inner Edge of the Protostellar Disk

(日本語) Trapping Low-mass Planets at the Inner Edge of the Protostellar Disk

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(日本語) Two Different Grain Size Distributions within the Protoplanetary Disk around HD 142527 Revealed by ALMA Polarization Observation

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(日本語) Parametric Study of the Rossby Wave Instability in a Two-dimensional Barotropic Disk. II. Nonlinear Calculations

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(日本語) Radial velocity measurements of an orbiting star around Sgr A*

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(日本語) Subaru/HiCIAO HK s Imaging of LKHa 330: Multi-band Detection of the Gap and Spiral-like Structures

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Collisional elongation: Possible origin of extremely elongated shape of 1I/‘Oumuamua

Collisional elongation: Possible origin of extremely elongated shape of 1I/‘Oumuamua   KeisukeSugiura, Hiroshi Kobayashi, Shu-ichiro Inutsuka, https://doi.org/10.1016/j.icarus.2019.03.014   Light curve observations of a recently discovered interstellar object 1I/‘Oumuamua suggest that this object has an extremely elongated shape with the axis ratio 0.3 or smaller. Planetesimal collisions can produce irregular shapes including elongated shapes. In this paper, we suggest that the extremely elongated shape...