Collaborative Research: First Science with the Michigan Young STar Imager at CHARA (MYSTIC)

合作研究：与 CHARA (MYSTIC) 的密歇根年轻恒星成像仪进行的首次科学研究

• 批准号: 1909165
• 负责人: John Monnier
• 金额: $ 45.55万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 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 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1909165&HistoricalAwards=false
• 关键词: Collaborative; Research; First; Science; Michigan

The number of exoplanets--planets around stars other than the Sun--has grown into the thousands in the past decade. The vast majority of the known exoplanets have been found closer to their star than the Earth is to our Sun. At the distances of stars, this is too small a spacing to be easily resolved. The investigators plan to use a new technique (infrared interferometry) and a new instrument (MYSTIC), to study how Earth-like planets form and develop. Preliminary studies of planets suggest a gap in planet size distribution between 1.5 and 2 times the radius of the Earth, and the investigators will seek to confirm or disprove that result. Graduate students and undergraduate students will be involved in the research. The investigators will also team with the Ann Arbor Hands-On Museum to 1) create mobile versions of museum displays that will travel the state of Michigan and 2) create a hands-on exhibit and booth to travel to NASCAR events in Michigan in order to provide science outreach to an audience that might not currently be seeking STEM experiences.The region inside 1 au around young stars is physically small on an astronomical scale. However, the physics in this region has an out-sized impact: this is where mass accretion onto the star is regulated, the initial conditions for terrestrial planet formation are set, and the migration of giant planets moving through the young gas-rich disk are controlled, Exoplanet demographics of the inner au now reveal a gap in the planet size distribution and also suggest the budget of solids available may not be enough to explain the known Kepler planets, at least using current disk models. To directly address the intimate connections between planet-formation theory and exoplanet demographics, spatially-resolved imaging of the inner au of young stars is needed. This can only be reached through infrared interferometry. Using the Georgia State University CHARA Array (the longest-baseline optical/infrared interferometer in the world) the investigators will image young stars with milliarcsecond angular resolution at wavelengths from 1.1-2.5 microns for the first time.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.

在过去的十年中，超越太阳的恒星围绕星星的甲板数量。发现绝大多数已知的系外行星比地球更靠近他们的恒星。在恒星的距离上，这太小了，无法轻松解决。研究人员计划使用一种新技术（红外干涉法）和一种新仪器（Mystic）来研究类似地球的行星的形成和发展。行星的初步研究表明，行星大小分布的差距是地球半径的1.5到2倍，研究人员将寻求确认或反驳这一结果。研究生和本科生将参与研究。调查人员还将与Ann Arbor动手博物馆合作1）创建将传播密歇根州的博物馆的移动版本和2）创建一个动手展览和展览，以前往密歇根州的NASCAR活动，以便向观众提供科学外展活动，以便为目前寻求STEM经验的观众提供。但是，该地区的物理学具有外影响：这是对恒星进行大规模吸收的调节，陆地行星形成的最初条件是设置的，巨型行星穿过年轻气体的巨大行星的迁移受到了控制，控制了富含气体的超球人口统计学，最初还没有足够的时间来揭示固体的空间，并且可以揭示固体的空白，以表明固体的空白，以至于可以阐明，这些杂志的差异可能会被阐明，并且可以表现出固体的空白，这些差异可能会出现，这些杂志的分布可能会出现，并且可以表现出固体的空白。型号。为了直接解决行星形成理论与系外行星人口统计学之间的紧密联系，需要对年轻恒星内部AU进行空间分辨的成像。这只能通过红外干涉法来达到。使用佐治亚州立大学的Chara阵列（世界上最长的光学/红外干涉仪），研究人员将首次以1.1-2.5微米为单位的Milliarcsecond Angular分辨率对年轻明星进行成像，首次从1.1-2.5微米来映像。本奖项奖颁发了NSF的法定任务，反映了通过评估范围的支持者，并通过评估范围的范围进行了评估。

项目成果

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

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

Imaging the Inner Astronomical Unit of the Herbig Be Star HD 190073

Herbig Be Star HD 190073 内部天文单位成像

• DOI: 10.3847/1538-4357/acb4ea
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Ibrahim, Nour;Monnier, John D.;Kraus, Stefan;Le Bouquin, Jean-Baptiste;Anugu, Narsireddy;Baron, Fabien;Brummelaar, Theo Ten;Davies, Claire L.;Ennis, Jacob;Gardner, Tyler
• 通讯作者: Gardner, Tyler

The Small Separation A-star Companion Population: First Results with CHARA/MIRC-X

小分离 A 星同伴群体：CHARA/MIRC-X 的初步结果

• DOI: 10.3847/1538-4357/aca1ad
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: De Furio, Matthew;Gardner, Tyler;Monnier, John;Meyer, Michael R.;Kratter, Kaitlin;Schaefer, Gail;Anugu, Narsireddy;Davies, Claire L.;Kraus, Stefan;Lanthermann, Cyprien
• 通讯作者: Lanthermann, Cyprien

MIRC-X: A Highly Sensitive Six-telescope Interferometric Imager at the CHARA Array

• DOI: 10.3847/1538-3881/aba957
• 发表时间: 2020-10-01
• 期刊: ASTRONOMICAL JOURNAL
• 影响因子: 5.3
• 作者: Anugu, Narsireddy;Le Bouquin, Jean-Baptiste;Sturmann, Judit
• 通讯作者: Sturmann, Judit