Collaborative Research: A Survey for Multiplicity of Low-mass (Class M) Dwarf Stars

合作研究：低质量（M 级）矮星多重性调查

• 批准号: 1616698
• 负责人: Elliott Horch
• 金额: $ 16.06万
• 依托单位: Southern Connecticut State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1616698&HistoricalAwards=false
• 关键词: Collaborative; Research; Survey; Multiplicity; Low

This collaborative project will use imaging and spectrophotometry to study 2,000 of the nearest stars. The high spatial resolution images will be capable of revealing bound planets. The spectrophotometry will provide information about the systems? temperatures and orbital characteristics. The work will focus on a type of star called M-dwarfs, which are cooler and less massive than the Sun. These stars are also considered more likely to have rocky planets habitable to life than stars like the Sun. Observations will be made with two telescopes in Arizona and one in California. Scientific results will be incorporated into an outreach program with the Discovery Channel. Students from Northern Arizona University and Southern Connecticut State University will participate in the research.The team will use the Differential Speckle Survey Instrument (DSSI) on Lowell Observatory 4.5m telescope and the R=600 visible-light multi-object spectrophotometer on Lowell?s 31-inch telescope. Through the comparison of speckle patterns simultaneously observed at two wavelengths, DSSI can measure separations of companions below the diffraction limit. Follow-up spectrophotometry will provide data for stellar characterization and spectral energy distribution fitting. The team will also use the Palomar 200-inch telescope to assess bound companions using data from an infrared camera or optical integral field spectrometer and isochrone modeling.

这个合作项目将使用成像和分光光度法来研究2,000颗最近的恒星。高空间分辨率图像将能够揭示束缚行星。分光光度法将提供有关系统的信息？温度和轨道特征。这项工作将集中在一种称为M矮星的星星上，这种恒星比太阳温度低，质量也小。这些恒星也被认为比像太阳这样的恒星更有可能拥有适合生命居住的岩石行星。观测将用两台望远镜在亚利桑那州和一台在加州。科学成果将被纳入探索频道的一个推广计划。来自北方亚利桑那大学和南康涅狄格州立大学的学生将参与研究，研究小组将使用洛厄尔天文台4.5米望远镜上的差分散斑巡天仪（DSSI）和洛厄尔？31英寸的望远镜。 通过比较在两个波长下同时观察到的散斑图案，DSSI可以测量衍射极限以下的同伴的分离。后续分光光度测量将为恒星表征和光谱能量分布拟合提供数据。该团队还将使用Palomar 200英寸望远镜，使用红外摄像机或光学积分场光谱仪和等时线建模的数据来评估束缚的同伴。