Effects of Dust Coagulation on Streaming Instability
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916439576805376 |
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| author | Ho, Ka Wai Li, Hui Li, Shengtai |
| author_facet | Ho, Ka Wai Li, Hui Li, Shengtai |
| contents | Streaming Instability (SI) in dust has long been thought to be a promising process in triggering planetesimal formation in the protoplanetary disks (PPDs). In this study, we present the first numerical investigation that models the SI in the vertically stratified disk together with the dust coagulation process. Our simulations reveal that, even with the initial small dust sizes, because dust coagulation promotes dust size growth, SI can eventually still be triggered. As such, the dust coagulation process broadens the parameter boundaries obtained from the previous SI studies using single dust species. We describe the various stages of dust dynamics along with their size evolution, and explore the impact of different dust fragmentation velocities. Implications of these results for realistic PPDs are also discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_17012 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Effects of Dust Coagulation on Streaming Instability Ho, Ka Wai Li, Hui Li, Shengtai Earth and Planetary Astrophysics Streaming Instability (SI) in dust has long been thought to be a promising process in triggering planetesimal formation in the protoplanetary disks (PPDs). In this study, we present the first numerical investigation that models the SI in the vertically stratified disk together with the dust coagulation process. Our simulations reveal that, even with the initial small dust sizes, because dust coagulation promotes dust size growth, SI can eventually still be triggered. As such, the dust coagulation process broadens the parameter boundaries obtained from the previous SI studies using single dust species. We describe the various stages of dust dynamics along with their size evolution, and explore the impact of different dust fragmentation velocities. Implications of these results for realistic PPDs are also discussed. |
| title | Effects of Dust Coagulation on Streaming Instability |
| topic | Earth and Planetary Astrophysics |
| url | https://arxiv.org/abs/2407.17012 |