6 papers
Stellar mergers and chemical element mixing: implications for the metamorphic stellar evolution in AGN disks
Yanlong Shi, Xiaoshan Huang, Douglas N. C. Lin +1
Chemical mixing during stellar mergers can significantly influence the subsequent evolution of the merger remnant. We perform a suite of three-dimensional hydrodynamical simulation…
Stellar Evolution with Radiative Feedback in AGN Disks
Zheng-Hao Xu, Yi-Xian Chen, Douglas N. C. Lin
Stars embedded in the inner pc region of an active galactic nucleus (AGN) experience extreme accretion conditions that significantly alter their evolution. We present one-dimension…
A dust condensation instability in AGN atmospheres: failed winds and the broad line region
James E. Owen, Douglas N. C. Lin
Active galactic nuclei (AGN) are important drivers of galactic evolution; however, the underlying physical processes governing their properties remain uncertain. In particular, the…
Capture and Escape of Planetary Mean-motion Resonances in Turbulent Discs
Yi-Xian Chen, Yinhao Wu, Ya-Ping Li +4
Mean-motion resonances (MMRs) form through convergent disc migration of planet pairs, which may be disrupted by dynamical instabilities after protoplanetary disc (PPD) dispersal. T…
The stochastic nature of migration of disc instability protoplanets in three-dimensional hydrodynamical and MHD simulations of fragmenting discs
Noah Kubli, Lucio Mayer, Hongping Deng +1
We present a detailed analysis of the nature of migration of protoplanetary clumps formed via disc instability in self-consistent 3D hydrodynamical (HD) and magneto-hydrodynamical…
Formation of free-floating planetary mass objects via circumstellar disk encounters
Zhihao Fu, Hongping Deng, Douglas N. C. Lin +1
The origin of planetary mass objects (PMOs) wandering in young star clusters remains enigmatic, especially when they come in pairs. They could represent the lowest-mass object form…