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- W2019680765 abstract "Star formation can be triggered by compression from wind or supernova-driven shock waves that sweep over molecular clouds. Because these shocks will likely contain processed elements, triggered star formation has been proposed as an explanation for short-lived radioactive isotopes (SLRIs) in the Solar system. Previous studies have tracked the triggering event to the earliest phases of collapse and have focused on the shock properties required for both successful star formation and mixing of SLRIs. In this paper, we use adaptive mesh refinement simulation methods, including sink particles, to simulate the full collapse and subsequent evolution of a stable Bonnor– Ebert sphere subjected to a shock and post-shock wind. We track the flow of the cloud material after a star (a sink particle) has formed. For non-rotating clouds, we find robust triggered collapse and little bound circumstellar material remaining around the post-shock collapsed core. When we add initial cloud rotation, we observe the formation of discs around the collapsed core which then interact with the post-shock flow. Our results indicate that these circumstellar discs are massive enough to form planets and are long lived, in spite of the ablation driven by post-shock-flow ram pressure. As a function of the initial conditions, we also track the time evolution of the accretion rates and particle mixing between the ambient wind and cloud material. The latter is maximized for cases of highest Mach number." @default.
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- W2019680765 date "2014-09-12" @default.
- W2019680765 modified "2023-10-18" @default.
- W2019680765 title "Triggered star formation and its consequences" @default.
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- W2019680765 doi "https://doi.org/10.1093/mnras/stu1571" @default.
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