Binary Star and Brown Dwarf Formation

双星和褐矮星形成

• 批准号: 9983530
• 负责人: Alan Boss
• 金额: $ 9.5万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-05-01 至 2003-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9983530&HistoricalAwards=false
• 关键词: Binary; Star; Brown; Dwarf; Formation

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).

这个项目将研究双星和棕矮星的形成。近年来，对恒星下天体和附近恒星的行星伴星的搜索取得了惊人的成功。现在迫切需要提供一个理论上的理解，如何在恒星诞生过程中创造出如此多样化的天体范围。这一过程的理论模型将基于自引力星际气体和尘埃云的辐射流体动力学方程的三维有限差分解。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会塌缩并碎裂成双星和更高阶的原恒星系统，并确定此类碎裂的最小质量。该项目由NSF恒星天文与天体物理计划(AST/SAA)提供资金。