Fragmentation, multiplicity and massive star formation in filament hubs

由于大质量恒星的辐射、动量反馈和最终以超新星的形式死亡，它们对周围环境和银河系星际介质的演变产生了深远的影响。双星相互作用主导着大质量恒星的演化，但目前在研究大质量恒星形成过程中很少考虑多重性。然而，这是一个至关重要的话题，因为亲密的伴星通过质量交换改变了大质量恒星的进化路径，以及它们随后的超新星祖先。观测表明，大质量的核心通常包含多颗原恒星，核心是在分子云的丝状气体网络中形成的。因此，大质量的原恒星核心可能是由具有可变角动量的块状气体流提供的，这使得碎片化的可能性越来越大。该项目旨在通过模拟在分子云丝网络中形成的大质量和低质量核来纠正这一点，以研究它们的多样性和盘性质。我们将使用带有辐射传输的MHD代码Arepo来模拟丝状气体网络，以研究气体在恒星中的碎片化。把大质量恒星形成的环境考虑进去会增加它们成为多恒星系统一部分的可能性吗？

Massive stars have a profound influence upon their surroundings and the evolution of the galactic Interstellar Medium due to their radiation, momentum feedback and final death as supernovae. Binary interaction dominates the evolution of massive stars, but at present multiplicity is rarely taken into account when studying massive star formation. However, it is a crucial topic, as close companions alter massive stars evolutionary path via mass exchange, and their subsequent supernovae progenitors. Observations show that massive cores often contain multiple proto-stars and that cores are formed within networks of filaments gas in molecular clouds. Thus massive proto-stellar cores may be fed by clumpy streams of gas with variable angular momentum, making fragmentation increasingly likely.This project aims to rectify this by simulating massive and low mass cores formed within molecular cloud filament networks, to investigate their multiplicity and disc properties. We will use the MHD code Arepo with radiative transfer to simulate filamentary gas networks to investigate the fragmentation of the gas into stars. Does including the environment in which massive stars form increase their likelihood to be part of multiple star systems?