RECONS Explores the Nearest Stars

RECONS 探索最近的恒星

• 批准号: 1715551
• 负责人: Todd Henry
• 金额: $ 49.6万
• 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: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1715551&HistoricalAwards=false
• 关键词: RECONS; Explores; Nearest; Stars

The RECONS (REsearch Consortium On Nearby Stars, www.recons.org) project is measuring the basic properties of several thousand stars that are nearest to the Sun, out to about 80 light years. Under this award, the team will concentrate on the smallest stars, known as red dwarfs, and their slightly less massive cousins, known as brown dwarfs. Although they are the smallest stars in the Universe, red dwarfs account for more than three-quarters of all stars; so, it is important to understand how they compare to the Sun in temperature, size, and whether or not they are orbited by other stars or planets. Students and postdoctoral researchers will develop mathematical and programming skills. Georgia State University serves a large population of students from groups historically underrepresented in scientific careers, and this project will provide opportunities for student involvement in research.The cornerstone of the RECONS effort is the astrometry/photometry program at Cerro Tololo Inter-American Observatory in Chile underway since 1999. Observations made there pinpoint compelling stars among a target sample of 500 that are observed in greater detail via observations from other telescopes such as SOAR, Gemini, and HST to characterize the natures of the stars and their companions. The project will explore two key questions in stellar astrophysics: (1) What happens to the population of objects as masses decline from the smallest stars to substellar brown dwarfs? (2) What is the companion population - stars, brown dwarfs, and massive planets - on Solar System scales around red dwarfs?

RECONS（邻近恒星研究联盟，www.recons.org）项目正在测量距离太阳最近的数千颗恒星的基本属性，大约80光年。 在这个奖项下，该团队将专注于最小的恒星，被称为红矮星，以及它们的质量稍小的表亲，被称为褐矮星。 虽然它们是宇宙中最小的恒星，但红矮星占所有恒星的四分之三以上;因此，重要的是要了解它们在温度，大小以及它们是否被其他恒星或行星环绕方面与太阳进行比较。 学生和博士后研究人员将发展数学和编程技能。 格鲁吉亚州立大学为来自科学界历史上代表性不足的群体的大量学生提供服务，该项目将为学生参与研究提供机会。RECONS努力的基石是智利Cerro Tololo美洲天文台自1999年以来正在进行的天体测量/测光计划。 在那里进行的观测在500个目标样本中精确定位了引人注目的恒星，这些样本通过其他望远镜（如SOAR，Gemini和HST）的观测进行了更详细的观察，以表征恒星及其同伴的性质。 该项目将探索恒星天体物理学中的两个关键问题：（1）当质量从最小的恒星下降到亚恒星褐矮星时，天体的数量会发生什么变化？ (2)在太阳系尺度上，红矮星周围的伴星--恒星、棕矮星和大质量行星--的数量是多少？

项目成果

Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M-dwarf System at 6.9 pc

• DOI: 10.3847/1538-3881/ab364d
• 发表时间: 2019-06
• 期刊: The Astronomical Journal
• 作者: J. Winters;A. Medina;J. Irwin;D. Charbonneau;N. Astudillo-Defru;E. Horch;J. Eastman;E. Vrijmoet-E.-Vrijmoe

The Solar Neighborhood. XLVI. Revealing New M Dwarf Binaries and Their Orbital Architectures

• DOI: 10.3847/1538-3881/abb4e9
• 发表时间: 2020-08
• 期刊: The Astronomical Journal
• 作者: E. Vrijmoet;T. Henry;W. Jao;S. Dieterich

TESS Discovery of an Ultra-short-period Planet around the Nearby M Dwarf LHS 3844

• DOI: 10.3847/2041-8213/aafb7a
• 发表时间: 2018-09
• 期刊: The Astrophysical Journal Letters
• 作者: R. Vanderspek;Chelsea X. Huang;A. Vanderburg;G. Ricker;D. Latham;S. Seager;J. Winn;J. Jenkins

The Solar Neighborhood. XLI. A Study of the Wide Main Sequence for M Dwarfs—Long-term Photometric Variability

太阳邻域 XLI。M 矮星宽主序的研究——长期光度变化

• 发表时间: 2017
• 作者: Tiffany D. Clements;T. Henry;Altonio D. Hosey;W. Jao;M. Silverstein;J. Winters;S. Dieterich;A. Riedel
• 通讯作者: A. Riedel

The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs

太阳邻域 XLIV：10 秒差距内的侦察发现

• DOI: 10.3847/1538-3881/aac262
• 发表时间: 2018
• 期刊: The Astronomical Journal
• 作者: Henry, Todd J.;Jao, Wei-Chun;Winters, Jennifer G.;Dieterich, Sergio B.;Finch, Charlie T.;Ianna, Philip A.;Riedel, Adric R.;Silverstein, Michele L.;Subasavage, John P.;Vrijmoet, Eliot Halley
• 通讯作者: Vrijmoet, Eliot Halley