High Angular Resolution Investigations of Binary Stars and their Disks

双星及其盘的高角分辨率研究

• 批准号: 1908026
• 负责人: Douglas Gies
• 金额: $ 34.21万
• 依托单位: Georgia State University Research Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1908026&HistoricalAwards=false
• 关键词: Angular; Resolution; Investigations; Binary; Stars

The Center for High Angular Resolution Astronomy (CHARA) optical interferometer array on Mt. Wilson is the nation's premiere facility for high angular resolution astronomy. This proposal describes a program to investigate binary stars and the disks of gas and dust that form around them. Images of these debris disks can now be obtained for the closest and largest examples using CHARA. The first part of the program is aimed at determining the orientation of the binary orbits with respect to their surrounding disks. The second part is a survey of binary systems that are undergoing an intense stage of mass exchange between the stars. The third part will be a program to image a set of stellar disks and search for indications of spiral arms. Finally, they will use CHARA to search for faint companions in other systems. The program will directly support the continued training of a research scientist, a postdoctoral associate, and several Ph.D. students at Georgia State University, which operates the CHARA array. The work will be highlighted in the undergraduate courses taught at GSU, which has a very diverse student population with a large minority component, and advanced undergraduates will participate in work at CHARA. The team will also support public outreach efforts at GSU and at Mt. Wilson, including the renewal of exhibits at the CHARA Visitors Gallery.The project will provide us with fundamental data on binary star systems with disks in their youth and after their transformation through mass transfer and loss. The study of binaries in debris disks will show how disks act to form binary stars and, once formed, how the binary systems implant structures in the disks that will influence where and how planets are formed. Detection of circumbinary disks around strongly interacting binaries will show us how much mass and angular momentum are lost from the system during the peak of mass transfer. Observations of structures in the disks of Be stars will provide the means to test theories of tidal processes and disk perturbation modes that are important in our understanding of star and planet formation, accretion processes in X-ray binaries, and accretion onto supermassive black holes. Detection of the mass donor remnants orbiting rapidly rotating stars will reveal the products of binary star evolution and shed light on the processes that lead to other products of mass transfer (massive X-ray binaries, hydrogen deficient supernovae, long duration gamma-ray bursts, neutron stars, black holes, and gravitational waves from mergers).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

高角分辨率天文学中心（CHARA）的光学干涉仪阵列。威尔逊是美国高角分辨率天文学的首要设施。这个提议描述了一个研究双星以及在它们周围形成的气体和尘埃盘的计划。 现在可以使用CHARA获得这些碎片盘的图像，以获得最接近和最大的例子。程序的第一部分旨在确定双星轨道相对于其周围圆盘的方向。第二部分是对双星系统的调查，这些双星系统正在经历恒星之间激烈的质量交换阶段。第三部分将是一个对一组恒星盘进行成像和寻找旋臂迹象的计划。最后，他们将使用CHARA在其他系统中寻找微弱的同伴。该计划将直接支持一名研究科学家，一名博士后助理和几名博士的继续培训。格鲁吉亚州立大学的学生，他们操作CHARA阵列。这项工作将在GSU教授的本科课程中突出显示，GSU拥有非常多样化的学生群体，其中少数民族成分很大，高级本科生将参加CHARA的工作。 该小组还将支持在格但斯克州立大学和山的公共外联工作。威尔逊，包括在CHARA游客画廊的展品更新。该项目将为我们提供基本数据的双星星系统与磁盘在他们的青年和他们的转变后，通过质量转移和损失。对碎片盘中双星的研究将显示盘如何形成双星，以及一旦形成，双星系统如何在盘中植入结构，这将影响行星的形成地点和方式。探测强相互作用双星周围的环双星盘将向我们展示在质量传递的峰值期间系统损失了多少质量和角动量。观测Be星盘的结构将为检验潮汐过程和盘扰动模式的理论提供手段，这些理论对我们理解星星和行星的形成、X射线双星的吸积过程以及超大质量黑洞的吸积都很重要。探测快速旋转恒星的质量供体残留物将揭示双星星星演化的产物，并揭示导致其他质量转移产物的过程（大质量X射线双星，缺氢超新星，长时间伽马射线爆发，中子星，黑洞，和引力波合并）该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

The Transformative Journey of HD 93521

• DOI: 10.3847/1538-3881/ac43be
• 发表时间: 2021-12
• 期刊: The Astronomical Journal
• 作者: D. Gies;K. Shepard;P. Wysocki;R. Klement

Interferometric Detections of sdO Companions Orbiting Three Classical Be Stars

• DOI: 10.3847/1538-4357/ac4266
• 发表时间: 2021-12
• 期刊: The Astrophysical Journal
• 作者: R. Klement;G. Schaefer;D. Gies;L. Wang;D. Baade;T. Rivinius;A. Gallenne;A. Carciofi;J. Monnier;A. M'erand;N. Anugu;S. Kraus;C. Davies;C. Lanthermann;T. Gardner;P. Wysocki;J. Ennis;A. Labdon;B. Setterholm;J. L. Bouquin

Spectroscopic Detection of the Pre-White Dwarf Companion of Regulus

轩辕十四前白矮星伴星的光谱探测

• DOI: 10.3847/1538-4357/abb372
• 发表时间: 2020
• 期刊: The Astrophysical Journal
• 作者: Gies, Douglas R.;Lester, Kathryn V.;Wang, Luqian;Couperus, Andrew;Shepard, Katherine;Neiner, Coralie;Wade, Gregg A.;Dunham, David W.;Dunham, Joan B.
• 通讯作者: Dunham, Joan B.

The Pre-He White Dwarf in the Post-mass Transfer Binary EL CVn

• DOI: 10.3847/1538-3881/ab52fa
• 发表时间: 2019-12
• 期刊: The Astronomical Journal
• 作者: Luqian 璐茜 Wang 王;D. Gies;K. Lester;Zhao Guo;R. Matson;G. Peters;V. Dhillon;T. Butterley;S. Li

Resolving Orbits of Low Mass Companions in the Hyades Cluster

解析毕宿星团中低质量伴星的轨道

• 发表时间: 2022
• 期刊: Bulletin of the American Astronomical Society
• 作者: Schaefer, Gail;Anugu, Narsireddy;Bender, Chad;ten Brummelaar, Theo;Farrington, Christopher;Gies, Douglas;Jones, Jeremy;Kraus, Stefan;Monnier, John;Simon, Michal
• 通讯作者: Simon, Michal