Rapidly Recurring Novae

快速重现的新星

• 批准号: 2000720
• 金额: --
• 依托单位: Liverpool John Moores University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2000720
• 关键词: Rapidly; Recurring; Novae

In recent years, a new class of thermonuclear novae has been uncovered; systems that recur on timescales < 10 years. These phenomena are powered by high mass and growing white dwarfs accreting at a high rate from a donor, and have become the leading single-degenerate supernova type Ia progenitor candidate. This project will continue the ground-breaking working being undertaken on the prototype rapid recurrent nova which resides within the Andromeda Galaxy. Initially the project will investigate the evolution and geometry of the ejecta using newly obtained deep and late-time spectra from 8+m-class telescopes. The project will also develop our existing hydrodynamic modelling code to explore the super remnant being built up around the prototype by many 1000s of past eruptions. This simulations will be used as predictive tools in the search for similar super remnants around other recurrent novae, particularly the Galactic examples. Finally, the project will exploit any newly erupting candidate systems, carrying out follow-up observations using facilities such as the Liverpool Telescope, LCO, and the Neil Gehrels Swift Observatory.

近年来，发现了一类新的热核新星，即周期小于10年的系统。这些现象是由高质量和不断增长的白色矮星以高速率从供体吸积提供动力，并已成为领先的单退化Ia型超新星祖先候选者。该项目将继续进行正在仙女座星系内快速复发新星原型方面的开创性工作。最初，该项目将利用8+ m级望远镜新获得的深层和后期光谱研究喷出物的演变和几何形状。该项目还将开发我们现有的流体动力学建模代码，以探索过去数千次喷发在原型周围建立的超级遗迹。这种模拟将被用作预测工具，在其他经常性新星，特别是银河系的例子周围寻找类似的超级遗迹。最后，该项目将利用任何新爆发的候选系统，使用利物浦望远镜，LCO和Neil Gehrels Swift天文台等设施进行后续观测。

项目成果

AT 2017fvz: a nova in the dwarf irregular galaxy NGC 6822

• DOI: 10.1093/mnras/stz1108
• 发表时间: 2019-04
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: M. Healy;M. Darnley;C. Copperwheat;A. Filippenko;M. Henze;J. Hestenes;P. James;K. Page;S. W