A Uniform Survey of TESS M dwarf Planets with MAROON-X

用 MAROON-X 对 TESS M 矮行星进行统一巡天

• 批准号: 2108465
• 负责人: Jacob Bean
• 金额: $ 103.15万
• 依托单位: University of Chicago
• 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=2108465&HistoricalAwards=false
• 关键词: Uniform; Survey; TESS; dwarf; Planets

The team will use the MAROON-X spectrograph on the Gemini North observatory to conduct follow-up spectroscopic observations of all TESS candidate planets around M-dwarf stars. They will find orbits for these planets, as well as masses and densities to high precision. The team will also attempt to determine the mass fraction for M-dwarf planets in the Earth – Super-Earth regime (1 – 10 Earth masses). One of the objectives of the work is to identify interesting targets for follow-up by future large ground-based and space-based telescopes. At the conclusion of the work, the MAROON-X instrument will transition from being a guest instrument on Gemini North to being a facility instrument. The team will train a post-doc, and provide research opportunities to undergraduates from under-represented groups.The team will use the MAROON-X instrument to make radial velocity observations of TESS-observed M dwarf stars at V-band magnitudes of at 16 where planetary transits are recorded. The combination of the radial velocity data, at a precision of 30 cm/sec, with the transit information will allow inference of the planet’s mass to within 10%, allowing for inference of the planet’s bulk composition. The team will observe 38 planets, of which 20 are potentially rocky. These measurements should allow for the first statistical analysis of planets in the 1-10 Earth mass range around M dwarf stars, which make up 75% of the stars in our galaxy. MAROON-X has been commissioned, and is currently operating as a guest instrument at Gemini North.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.

该团队将使用双子座北天文台的MAROON-X光谱仪对M矮星周围的所有TESS候选行星进行后续光谱观测。他们将找到这些行星的轨道，以及高精度的质量和密度。该团队还将试图确定M-矮行星在地球-超级地球体系（1 - 10个地球质量）中的质量分数。这项工作的目标之一是确定感兴趣的目标，供今后的大型地面和空间望远镜跟踪。在工作结束时，MAROON-X仪器将从双子座北的客人仪器过渡到设施仪器。该团队将培养一名博士后，并为来自代表性不足群体的本科生提供研究机会。该团队将使用MAROON-X仪器对TESS观测的M矮星进行径向速度观测，在V波段16等处记录行星凌日。将径向速度数据（精确度为30厘米/秒）与凌日信息相结合，可以将行星的质量推断到10%以内，从而可以推断行星的整体组成。该团队将观测38颗行星，其中20颗可能是岩石行星。这些测量应该允许对M矮星周围1-10地球质量范围内的行星进行首次统计分析，M矮星占我们银河系恒星的75%。MAROON-X已被委托，目前作为Gemini North的客座仪器运行。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

TOI-561 b: A Low-density Ultra-short-period “Rocky” Planet around a Metal-poor Star

• DOI: 10.3847/1538-3881/acad83
• 发表时间: 2022-10
• 期刊: The Astronomical Journal
• 作者: C. Brinkman;L. Weiss;F. Dai;D. Huber;E. Kite;D. Valencia;J. Bean;C. Beard;A. Behmard;S. Blunt;M. Brady;B. Fulton;S. Giacalone;A. Howard;H. Isaacson;D. Kasper;J. Lubin;M. Macdougall;Joseph M. Akana Murphy;Mykhaylo Plotnykov;A. Polanski;M. Rice;A. Seifahrt;G. Stefansson;J. Stürmer

TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley

TOI-1468：由两个凌日行星组成的系统，一个是超级地球，一个是迷你海王星，位于半径谷的两侧

• DOI: 10.1051/0004-6361/202244056
• 发表时间: 2022
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Chaturvedi, P.;Bluhm, P.;Nagel, E.;Hatzes, A. P.;Morello, G.;Brady, M.;Korth, J.;Molaverdikhani, K.;Kossakowski, D.;Caballero, J. A.
• 通讯作者: Caballero, J. A.

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.

A Close-in Puffy Neptune with Hidden Friends: The Enigma of TOI 620

• DOI: 10.3847/1538-3881/ac658b
• 发表时间: 2022-04
• 期刊: The Astronomical Journal
• 作者: M. Reefe;R. Luque;E. Gaidos;C. Beard;P. Plavchan;M. Cointepas;B. Cale;E. Pallé;H. Parviainen-H.-Pa

Measuring the Obliquities of the TRAPPIST-1 Planets with MAROON-X

使用 MAROON-X 测量 TRAPPIST-1 行星的倾角

• DOI: 10.3847/1538-3881/acb5f7
• 发表时间: 2023
• 期刊: The Astronomical Journal
• 作者: Brady, Madison;Bean, Jacob L.;Seifahrt, Andreas;Kasper, David;Luque, Rafael;Reiners, Ansgar;Benneke, Björn;Stefánsson, Gudmundur;Stürmer, Julian
• 通讯作者: Stürmer, Julian