Collaborative Research: Mapping small and large scale magnetic fields on low mass stars

合作研究：绘制低质量恒星上的小尺度和大尺度磁场

• 批准号: 1312453
• 负责人: Leslie Hebb
• 金额: $ 12.88万
• 依托单位: Hobart and William Smith Colleges
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1312453&HistoricalAwards=false
• 关键词: Collaborative; Research; Mapping; small; large

This collaborative project combines observational and theoretical efforts with a goal of improving knowledge of magnetic fields on low mass stars. They will use high precision lightcurves of M-dwarfs from the Kepler satellite to probe starspots on late type stars to determine how stellar mass and rotation affect local magnetic fields. They will use data already acquired from Kepler, and new photometry with moderate sized (1-m aperture) robotic telescopes and new spectra with the Canada-France-Hawaii Telescope. Starspots are short-lived areas on the surfaces of stars that are caused by magnetic activity. The researchers will also investigate the effect of magnetic fields on fundamental stellar properties, such as temperature, luminosity and radius as a function of M-dwarf mass. They will also determine the relative importance of magnetic fields on observatory activity, such as flares and hydrogen-alpha emission.Broader impacts include providing research opportunities to undergraduate students in STEM majors, with an effort to broaden participation by students from traditionally underrepresented minority groups. They will also engage a group of amateur astronomers to obtain time series photometry of bright eclipsing binary stars.

这个合作项目结合了观测和理论工作，目标是提高对低质量恒星磁场的认识。 他们将使用开普勒卫星的M矮星的高精度光变曲线来探测晚型恒星上的星点，以确定恒星质量和旋转如何影响局部磁场。 他们将使用已经从开普勒获得的数据，以及中等尺寸（1米孔径）机器人望远镜的新测光和加拿大-法国-夏威夷望远镜的新光谱。 星斑是恒星表面由磁场活动引起的短暂区域。 研究人员还将研究磁场对恒星基本特性的影响，例如温度，光度和半径作为M矮星质量的函数。 更广泛的影响包括为STEM专业的本科生提供研究机会，努力扩大传统上代表性不足的少数群体学生的参与。 他们还将聘请一组业余天文学家获得明亮的食双星的时间序列测光。