On the maximum grain size entrained by photoevaporative winds
We model the behaviour of dust grains entrained by photoevaporation-driven winds from protoplanetary discs assuming a non-rotating, plane-parallel disc. We obtain an analytic expression for the maximum entrainable grain size in extreme-UV radiation-driven winds, which we demonstrate to be proportion...
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| creator | Hutchison, Mark A Laibe, Guillaume Maddison, Sarah T |
| description | We model the behaviour of dust grains entrained by photoevaporation-driven winds from protoplanetary discs assuming a non-rotating, plane-parallel disc. We obtain an analytic expression for the maximum entrainable grain size in extreme-UV radiation-driven winds, which we demonstrate to be proportional to the mass loss rate of the disc. When compared with our hydrodynamic simulations, the model reproduces almost all of the wind properties for the gas and dust. In typical turbulent discs, the entrained grain sizes in the wind are smaller than the theoretical maximum everywhere but the inner disc due to dust settling. |
| doi_str_mv | 10.48550/arxiv.1608.08034 |
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| subjects | Computer simulation Dust Entrainment Grain size Physics - Earth and Planetary Astrophysics Physics - Solar and Stellar Astrophysics Planet formation Protoplanets Ultraviolet radiation |
| title | On the maximum grain size entrained by photoevaporative winds |
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