Exploring the Milliarcsecond Frontier: Open access to the renewed CHARA Array

探索毫弧秒前沿：开放更新的 CHARA 阵列

• 批准号: 2034336
• 负责人: Gail Schaefer
• 金额: $ 480.01万
• 依托单位: Georgia State University Research Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2034336&HistoricalAwards=false
• 关键词: Exploring; Milliarcsecond; Frontier; Open; access

This award provides open observing time access to the U.S. astronomical community on the Georgia State University Center for High Angular Resolution Astronomy (CHARA) Array on Mount Wilson, CA. This renewal makes available more time than before, up to 100 nights per year. It also funds staff to provide expertise, advice, and training for better use of the access provided to archival CHARA data. CHARA will continue to collaborate with graduate training programs in the U.S. and abroad, hosting undergraduate and graduate students and postdocs in technical and scientific capacities. CHARA will support a Georgia State University Signature Experience program for undergraduates, and work with the Mount Wilson Institute to enhance the experience for the roughly 70,000 annual visitors to the mountain, by helping to renovate the museum and other visitor facilities. These broader activities impact development of the STEM workforce and significantly enhance public engagement.The CHARA Array is an optical and near-infrared interferometer consisting of six 1-meter-aperture telescopes in a Y configuration, providing 15 baselines from 33 to 331 meters, and ten independent closure phase triangles. With the number and size of its telescopes, its imaging capabilities, the length of its baselines, the range of wavelength regimes and spectral resolutions covered by its beam combiners, the CHARA Array is a uniquely powerful facility for milliarcsecond imaging that is now reaching even deeper levels of sensitivity and performance. Its scientific results continue to advance our understanding of stellar astrophysics, exoplanets, dust and debris disks, binaries and multiple stars, and novae. This award provides for an expansion of services already in place, supporting both collaboration and external users. It also permits the team to update several aging systems on the mountain, including the aluminizing facilities and the telescope drives.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.

该奖项为佐治亚州立大学高角度分辨率天文学中心（CHARA）阵列提供了公开观察的时间访问美国天文学界的时间。 这种续约使每年最多100晚的时间比以前更多。 它还为员工提供了资金，以提供专业知识，建议和培训，以更好地利用提供给档案CHARA数据的访问权限。 Chara将继续与美国和国外的研究生培训课程合作，以技术和科学能力为本科生和研究生以及博士后。 Chara将支持佐治亚州立大学的本科生签名经验计划，并与威尔逊山研究所合作，通过帮助翻新博物馆和其他游客设施来增强大约70,000年的年度游客的体验。 这些更广泛的活动会影响STEM劳动力的发展，并显着增强了公众参与。Chara阵列是一种光学和近红外干涉仪，由Y配置中的六个1米端望远镜组成，可提供33至331米的15个基线，并提供10个独立的封闭相关。 凭借其望远镜的数量和大小，其成像功能，其基准的长度，波束组合仪涵盖的波长和光谱分辨率的范围，Chara阵列是Milliarcsecond Imaging的独特功能，现在已经达到了更深的敏感性和性能。 它的科学结果继续提高我们对恒星天体物理学，外部球星，灰尘和碎屑磁盘，二进制和多个恒星以及Novae的理解。 该奖项提供了已经扩展的服务，并支持协作和外部用户。 它还允许该团队在山上更新几个老化系统，包括铝化设施和望远镜驱动器。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估评估标准来通过评估来获得支持的。

项目成果

The Great Dimming of the Hypergiant Star RW Cephei: CHARA Array Images and Spectral Analysis

• DOI: 10.3847/1538-3881/ace59d
• 发表时间: 2023-07
• 期刊: The Astronomical Journal
• 作者: N. Anugu;F. Baron;D. Gies;C. Lanthermann;G. Schaefer;K. A. Shepard;T. Brummelaar;J. Monnier;S. Kraus;J. L. Bouquin;C. Davies;J. Ennis;T. Gardner;A. Labdon;R. Roettenbacher;B. Setterholm;W. Vollmann;C. Sigismondi

The Orbits and Dynamical Masses of the Castor System

脚轮系统的轨道和动态质量

• DOI: 10.3847/1538-4357/ac9d8d
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Torres, Guillermo;Schaefer, Gail H.;Monnier, John D.;Anugu, Narsireddy;Davies, Claire L.;Ennis, Jacob;Farrington, Christopher D.;Gardner, Tyler;Klement, Robert;Kraus, Stefan
• 通讯作者: Kraus, Stefan

A detailed analysis of the Gl 486 planetary system

GL 486行星系统的详细分析

• DOI: 10.1051/0004-6361/202243548
• 发表时间: 2022
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Caballero, J. A.;González-Álvarez, E.;Brady, M.;Trifonov, T.;Ellis, T. G.;Dorn, C.;Cifuentes, C.;Molaverdikhani, K.;Bean, J. L.;Boyajian, T.
• 通讯作者: Boyajian, T.

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

Three-dimensional Orbit of AC Her Determined: Binary-induced Truncation Cannot Explain the Large Cavity in This Post-AGB Transition Disk

AC 的三维轨道已确定：二元引起的截断无法解释 AGB 后过渡盘中的大空腔

• DOI: 10.3847/1538-4357/acd1e6
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Anugu, Narsireddy;Kluska, Jacques;Gardner, Tyler;Monnier, John D.;Van Winckel, Hans;Schaefer, Gail H.;Kraus, Stefan;Le Bouquin, Jean-Baptiste;Ertel, Steve;Mérand, Antoine
• 通讯作者: Mérand, Antoine