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- W3100406661 abstract "Recent years have seen growing interest in the streaming instability as a candidate mechanism to produce planetesimals. However, these investigations have been limited to small-scale simulations. We now present the results of a global protoplanetary disk evolution model that incorporates planetesimal formation by the streaming instability, along with viscous accretion, photoevaporation by EUV, FUV, and X-ray photons, dust evolution, the water ice line, and stratified turbulence. Our simulations produce massive (60-130 $M_oplus$) planetesimal belts beyond 100 au and up to $sim 20 M_oplus$ of planetesimals in the middle regions (3-100 au). Our most comprehensive model forms 8 $M_oplus$ of planetesimals inside 3 au, where they can give rise to terrestrial planets. The planetesimal mass formed in the inner disk depends critically on the timing of the formation of an inner cavity in the disk by high-energy photons. Our results show that the combination of photoevaporation and the streaming instability are efficient at converting the solid component of protoplanetary disks into planetesimals. Our model, however, does not form enough early planetesimals in the inner and middle regions of the disk to give rise to giant planets and super-Earths with gaseous envelopes. Additional processes such as particle pileups and mass loss driven by MHD winds may be needed to drive the formation of early planetesimal generations in the planet forming regions of protoplanetary disks." @default.
- W3100406661 created "2020-11-23" @default.
- W3100406661 creator A5012735923 @default.
- W3100406661 creator A5031569510 @default.
- W3100406661 creator A5068874155 @default.
- W3100406661 creator A5083518430 @default.
- W3100406661 date "2017-04-10" @default.
- W3100406661 modified "2023-10-16" @default.
- W3100406661 title "Planetesimal Formation by the Streaming Instability in a Photoevaporating Disk" @default.
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- W3100406661 doi "https://doi.org/10.3847/1538-4357/aa6932" @default.
- W3100406661 hasPublicationYear "2017" @default.
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