Binary Star and Brown Dwarf Formation

本项目将研究双星和褐矮星的形成。 近年来，对亚恒星物体和邻近恒星的行星伴星的搜索取得了巨大的成功。 现在有一个强烈的需要提供一个理论上的理解，如何这样一个不同的机构可以在恒星诞生过程中都创建。 将根据自引力星际气体和尘埃云辐射流体动力学方程的三维有限差分解，为这一过程建立理论模型。 这些模型将包括湍流和磁场的复杂影响。 该代码将用于预测哪些类型的分子云核心会发生坍缩并分裂成二元和高阶原恒星系统，并确定此类碎片的最小质量。该项目的资金由美国国家科学基金会恒星天文天体物理计划（AST/SAA）提供。

ABSTRACTBoss, Alan"Binary Star & Brown Dwarf Formation"AST-9983530This project will investigate the formation of binary and brown dwarf stars. In recent years searches for substellar objects and planetary companions to nearby stars have been spectacularly successful. There is now a strong need to provide a theoretical understanding of how such a diverse range of bodies can all be created in the stellar birth process. Theoretical models for this process will be developed that are based upon 3-dimensional finite-difference solutions of the equations of radiative hydrodynamics for self-gravitating interstellar clouds of gas and dust. These models will include the complicating effects of turbulence and magnetic fields. The code will be used to predict which types of molecular cloud cores undergo collapse and fragment into binary and higher order protostellar systems, and to determine the minimum mass of such fragments.Funding for this project was provided by the NSF program for Stellar Astronomy & Astrophysics (AST/SAA).