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首页> 外文期刊>The Astrophysical Journal. Supplement Series >Modules for Experiments in Stellar Astrophysics (MESA)
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Modules for Experiments in Stellar Astrophysics (MESA)

机译：恒星天体物理学（MESA）实验模块

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摘要

Stellar physics and evolution calculations enable a broad range of research in astrophysics. Modules for Experiments in Stellar Astrophysics (MESA) is a suite of open source, robust, efficient, thread-safe libraries for a wide range of applications in computational stellar astrophysics. A one-dimensional stellar evolution module, MESA star, combines many of the numerical and physics modules for simulations of a wide range of stellar evolution scenarios ranging from very low mass to massive stars, including advanced evolutionary phases. MESA star solves the fully coupled structure and composition equations simultaneously. It uses adaptive mesh refinement and sophisticated timestep controls, and supports shared memory parallelism based on OpenMP. State-of-the-art modules provide equation of state, opacity, nuclear reaction rates, element diffusion data, and atmosphere boundary conditions. Each module is constructed as a separate Fortran 95 library with its own explicitly defined public interface to facilitate independent development. Several detailed examples indicate the extensive verification and testing that is continuously performed and demonstrate the wide range of capabilities that MESA possesses. These examples include evolutionary tracks of very low mass stars, brown dwarfs, and gas giant planets to very old ages; the complete evolutionary track of a 1 M_⊙ star from the pre-main sequence (PMS) to a cooling white dwarf; the solar sound speed profile; the evolution of intermediate-mass stars through the He-core burning phase and thermal pulses on the He-shell burning asymptotic giant branch phase; the interior structure of slowly pulsating B Stars and Beta Cepheids; the complete evolutionary tracks of massive stars from the PMS to the onset of core collapse; mass transfer from stars undergoing Roche lobe overflow; and the evolution of helium accretion onto a neutron star. MESA can be downloaded from the project Web site (http://mesa.sourceforge.net/).
机译：恒星物理和演化计算使天体物理学的研究范围广泛。恒星天体物理学实验模块（MESA）是一套开源，健壮，高效，线程安全的库，适用于计算恒星天体物理学的广泛应用。一维恒星演化模块（MESA恒星）结合了许多数值和物理模块，用于模拟从极低质量到巨大恒星（包括高级演化阶段）的各种恒星演化场景。 MESA star同时求解完全耦合的结构和组成方程。它使用自适应网格细化和复杂的时间步控件，并支持基于OpenMP的共享内存并行性。最先进的模块可提供状态，不透明度，核反应速率，元素扩散数据和大气边界条件的方程式。每个模块被构造为一个单独的Fortran 95库，具有自己明确定义的公共接口，以促进独立开发。几个详细的示例表明了连续执行的广泛验证和测试，并演示了MESA拥有的广泛功能。这些例子包括非常低质量的恒星，褐矮星和很晚的气体巨行星的演化轨迹。从主前序（PMS）到冷却的白矮星的完整1M_⊙星的演化轨迹;太阳声速剖面;中间质量恒星通过氦核燃烧相和氦壳燃烧渐近巨分支相上的热脉冲演化;缓慢脉动的B星和Beta造父变星的内部结构;从PMS到核心坍塌发生的完整恒星的完整演化轨迹;罗氏瓣溢流的恒星传质;以及氦积聚到中子星上的演化。可以从项目网站（http://mesa.sourceforge.net/）下载MESA。

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