AI 中文总结
研究原行星盘中吸积爆发对其内部成分的影响及尘埃成分和性质对爆发动力学的作用。方法是用TriPoD方法运行模型。结果表明爆发会蒸发尘埃，再凝结和粘性演化重置圆盘，且爆发周期和最大吸积率与尘埃升华温度直接相关。
AI 中文摘要
背景：由于死区内边缘的热不稳定性，在原行星盘中会发生间歇性吸积爆发。这些爆发周期性地加热死区，显著改变其成分/化学性质以及向恒星的吸积。目的：研究这些吸积爆发如何影响内盘成分，以及不同尘埃成分和性质如何影响爆发动力学。方法：使用TriPoD方法运行垂直积分轴对称尘埃和气体演化模型，包括依赖尘埃不透明度的加热和冷却、死区模型以及尘埃成分追踪，包括挥发物的蒸发和凝结。结果：当考虑尘埃由硅酸盐和挥发物的凝结序列组成时，爆发会使0.5天文单位内的大部分尘埃蒸发。快速的再凝结和随后的粘性演化在爆发之间重置了圆盘。此外，发现爆发周期和最大吸积率与尘埃升华温度直接相关。
英文摘要
Context: Episodic accretion outbursts have been shown to occur in protoplanetary discs due to thermal instability at the inner edge of the dead zone. These outbursts periodically heat up the dead zone, significantly altering the composition/chemistry and accretion onto the star. Aims: We investigate how these accretion outbursts affect the inner disc composition and how different dust compositions and properties affect the outbursts' dynamics. Methods: We run vertically integrated axis-symmetric dust and gas evolution models using the TriPoD method, including dust opacity dependent heating and cooling, a dead zone model, and compositional tracking of dust, including the evaporation and condensation of volatiles. Results: When considering dust to be made up of a condensation sequence of silicates and volatiles, the outburst evaporates most of the dust within 0.5 au. The fast re-condensation and subsequent viscous evolution reset the disc between bursts. Additionally, we find that the burst cycle period and maximal accretion rate directly correlate with the dust sublimation temperature.
Comments14 pages, 11 figures
