A General Binary Star Model for the Astronomical Community

关于星星最基本的信息是它的质量。最常见的是，恒星质量的测定是针对轨道双星进行的。在这个研究项目中，首席研究员正在继续开发一个通用的二进制星星模型计算机代码，在最近几十年里，改变了食双星的分析方式。威尔逊-德文尼模型代码起源于现在的标准做法，客观地寻找接近的二元参数，引入了几种同时解决方案，允许直接确定二元组分的光度质量比，并且从一开始就设计得非常通用，适用于各种各样的二元。该模型可以合成荧光星风和大气，偏振恒星表面，偏振拱星结构，X射线脉冲到达时间，全光谱能量分布，和其他现象，同时继续再现所有的二元星星的功能，已被发现在许多国家的数百名用户有用。现在，许多研究小组都在使用这套代码来确定与附近星系的距离，并继续通过双星来研究恒星的演化，包括发现和研究致密天体（白色矮星、中子星、黑洞）。更广泛的影响：该项目的双星星星计算机模型已与社区共享20多年，因此具有广泛影响的悠久历史和大量文献引用的记录。在此期间，美国和国外形成了许多合作，以利用该模型。各研究小组的大量出版物对双星星星领域以及恒星结构、恒星演化和最近的宇宙距离尺度等相关领域产生了重大影响。与代码的工作影响了同事和学生进入恒星天体物理学，包括二进制星星领域。首席研究员与公立学校的学生一起工作，发现他们对代码中的图像制作功能以及文档在处理真实的数据时鼓励个人互动的方式表示赞赏。

AST-0307561PI WilsonThe most fundamental piece of information about a star is its mass. Most commonly, stellar mass determinations are carried out for orbiting double stars. In this research project, the Principle Investigator is continuing the development of a general binary star model computer code that has, over recent decades, changed the way eclipsing binaries are analyzed. The Wilson-Devinny model code originated the now standard practice of finding close binary parameters impersonally, introduced simultaneous solutions of several kinds, allowed for direct determination of photometric mass ratios for the binary components, and was designed from the beginning to be very general, applying to a wide variety of binaries. The model can be made to synthesize fluorescent stellar winds and atmospheres, polarizing stellar surfaces, polarizing circumstellar structures, X-ray pulse arrival times, full spectral energy distributions, and other phenomena, while continuing to reproduce all binary star features that have been found useful by several hundred users in many countries. The code now is being used by many groups to establish distances to nearby galaxies, and continues to be used to investigate stellar evolution via binaries, including discovery and study of compact objects (white dwarfs, neutron stars, black holes). Broader impact: The binary star computer model of this project has been shared with the community for over 20 years and thus has a long history of broad impact and a record of a very large number of literature citations. Many collaborations were formed in the U.S. and abroad to exploit the model during that time. The large number of publications by the various groups have had a major impact on the binary star field and related fields such as stellar structure, stellar evolution and recently the cosmic distance scale. Work with the code has influenced associates and students to enter stellar astrophysics, including the binary star field. The Principle Investigator works with public school students, and finds them appreciative of the image-making features in the code and the way that the documentation encourages personal interaction in dealing with real data.