Collaborative Research: Prediction of a Red Nova Outburst in the Star KIC 9832227

合作研究：KIC 9832227 恒星中红色新星爆发的预测

• 批准号: 1716718
• 负责人: Henry Kobulnicky
• 金额: $ 20.28万
• 依托单位: University of Wyoming
• 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: 2017-07-01 至 2023-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1716718&HistoricalAwards=false
• 关键词: Collaborative; Research; Prediction; Red; Nova

Novae are stars that brighten dramatically almost overnight. The investigators predict that the star KIC9832227 will become a nova early in the year 2022 with an uncertainty of about six months. This star has been identified as a binary (two stars orbiting each other), with the two stars practically touching. The period of revolution of the two stars is decreasing in a manner similar to that of another star which did become a nova; the research team predicts that in 2022 they will actually merge to become one star, emitting an enormous amount of energy. The team plans to study the star further using the Hubble Space Telescope, the Very Long Baseline Array, and several other telescopes. They will determine the properties of the two stars and monitor the changing period of revolution. They will also test models for how stars merge. They will collaborate with educators to produce education materials, consistent with science standards, for 6-12 grade students and teachers. Undergraduates at their two institutions will be involved in the research.The investigators determined that the period of revolution of KIC9832227 was decreasing in an exponential manner similar to an earlier nova, V1309 Sco. Archival research enabled researchers to determine that the period of this earlier nova also decreased exponentially. The team has considered other factors, such as additional companion stars, that could have caused the period change. They propose to monitor the period changes with small telescopes. They will also study the system further using large telescopes with spectrographs to rule out faint, as yet undiscovered, companion stars. Most novae have undergone previous mass loss, and they are proposing to use infrared and coronographic studies to detect the effects of dust around the star.

Novae是几乎在一夜之间显着增强的明星。 调查人员预测，恒星KIC9832227将在2022年初成为NOVA，不确定性约为六个月。 这颗恒星被确定为二进制（两颗恒星相互绕行），两颗恒星几乎触摸。 两颗恒星的革命时期正在以类似于另一个恒星的方式下降。研究小组预测，在2022年，他们实际上将合并成为一颗恒星，发出大量能量。 该团队计划使用哈勃太空望远镜，非常长的基线阵列和其他几个望远镜进一步研究恒星。 他们将确定两颗恒星的特性，并监视革命的变化时期。 他们还将测试恒星如何合并的模型。 他们将与教育工作者合作制作与6至12年级的学生和老师一起制作与科学标准一致的教育材料。 研究人员确定，KIC9832227的革命时期正在以指数级的方式减少，类似于Nova，V1309 SCO，研究人员将在其两个机构的两个机构中涉及。 档案研究使研究人员能够确定Nova的期间也呈指数下降。 该团队考虑了其他因素，例如其他伴侣明星，可能会导致时期变化。 他们建议用小型望远镜监视周期变化。 他们还将使用带有光谱仪的大型望远镜进一步研究该系统，以排除尚未发现的伴侣星的淡淡的远距离。 大多数Novae都经历了以前的质量损失，他们建议使用红外线和珊瑚学研究来检测恒星周围的灰尘的影响。