Collaborative Research: Nearby M dwarf stars as high-priority targets for exoplanet searches

合作研究：附近的 M 矮星作为系外行星搜索的高优先级目标

• 批准号: 0908419
• 负责人: Eric Gaidos
• 金额: $ 16.61万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908419&HistoricalAwards=false
• 关键词: Collaborative; Research; Nearby; dwarf; stars

In this collaborative proposal, Drs. Sebastien Lépine and Eric Gaidos will complete the largest and most complete census of nearby, low-mass stars, which are called M dwarf stars. They will identify the highest priority targets for planet searches, especially for Earth-mass planets in or near the habitable zones of their parent stars. Many previous surveys have been biased against these targets because they are faint or incompletely cataloged; furthermore, some M dwarf stars may have flares and spots that render them unsuitable for planet searches. The SUPERBLINK stellar motion survey, now being completed by Dr. Lépine, includes more than 95% of the estimated 50,000 low-mass systems within 50 parsecs of the Sun. The research team will carry out a large-scale spectroscopic survey of 10,000 stars to monitor atmospheric activity, estimate heavy element abundances, determine space motions, and infer ages, in order to select for targets with the highest potential for exoplanet discoveries. They will also build and maintain a comprehensive database of exoplanet search targets that will include each star's fundamental parameters (luminosity, distance, composition, activity level, estimated mass and age) and will track the results of any effort to identify exoplanets in each of those systems. The list of exoplanet targets will be made publicly available and updated on a regular basis to track down targets of current exoplanet survey programs, and those around which planets have already been discovered. This will allow for exoplanet researchers to coordinate their efforts, and for the public to be kept informed of the latest discoveries. Undergraduate interns (two per year) will be involved at all stages of the research project at AMNH. One graduate student at the University of Hawaii will participate in the spectroscopic and photometric investigations. Results of this research will be incorporated into the American Museum of Natural History / Hayden Planetarium database (the Digital Galaxy), which is presented to 1 million visitors each year as part of the Planetarium's immersive 3D Space Show. A short video for public outreach will be produced each year on some aspect of this research, extrasolar planets, or habitability.

在这项合作计划中，Lépine博士和Eric Gaidos博士将完成对附近低质量恒星的最大和最完整的普查，这些恒星被称为M矮星。 他们将确定行星搜索的最高优先级目标，特别是在其母星的可居住区内或附近的地球质量行星。许多以前的调查都对这些目标有偏见，因为它们很微弱或不完全编目;此外，一些M矮星可能有耀斑和斑点，使它们不适合行星搜索。目前由勒平博士完成的SUPERBLINK恒星运动调查包括了太阳50秒差距内估计的50，000个低质量系统中的95%以上。该研究小组将对1万颗恒星进行大规模光谱调查，以监测大气活动，估计重元素丰度，确定空间运动并推断年龄，以选择最有可能发现系外行星的目标。 他们还将建立和维护一个关于系外行星搜索目标的综合数据库，其中将包括每颗星星的基本参数（光度、距离、成分、活动水平、估计质量和年龄），并将跟踪在每个系统中识别系外行星的任何努力的结果。系外行星目标列表将公开提供，并定期更新，以追踪当前系外行星调查计划的目标，以及已经发现行星的目标。这将使系外行星研究人员能够协调他们的工作，并让公众随时了解最新的发现。本科实习生（每年两名）将参与AMNH研究项目的各个阶段。夏威夷大学的一名研究生将参与分光光度调查。这项研究的结果将被纳入美国自然历史博物馆/海登天文馆的数据库（数字银河），作为天文馆沉浸式3D太空展的一部分，每年向100万游客展示。每年将制作一个简短的视频供公众宣传，介绍这项研究的某些方面，太阳系外行星或可居住性。