arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1908.01545astro-ph.SRastro-ph.IM
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用高分辨率UV光谱偏振仪研究恒星物理

Stellar Physics with High-Resolution UV Spectropolarimetry

Julien Morin, Jean-Claude Bouret, Coralie Neiner, Conny Aerts, Stefano Bagnulo, Claude Catala, Corinne Charbonnel, Chris Evans, Luca Fossati, Miriam Garcia, Ana… 展开作者

Julien Morin, Jean-Claude Bouret, Coralie Neiner, Conny Aerts, Stefano Bagnulo, Claude Catala, Corinne Charbonnel, Chris Evans, Luca Fossati, Miriam Garcia, Ana I Gómez de Castro, Artemio Herrero, Gaitee Hussain, Lex Kaper, Oleg Kochukhov, Renada Konstantinova-Antova, Alex de Koter, Michaela Kraus, Jiří\K{r}tička, Agnes Lèbre, Theresa Lueftinger, Georges Meynet, Pascal Petit, Steve Shore, Sami Solanki, Beate Stelzer, Antoine Strugarek, Aline Vidotto, Jorick S Vink

摘要:

目前恒星物理学中的热点问题,无论是热恒星还是冷恒星,都与它们的磁性有关。在热恒星中,化石来源的稳定磁场影响其恒星结构和星周环境,可能在恒星演化中发挥重要作用。然而,这一作用是复杂的,因此迄今为止人们对其了解甚少。它需要用高分辨率的紫外分光偏振测量来量化。在冷恒星中,紫外线分光偏振法将提供对非常动态的高层恒星大气的结构和磁场的了解,为在磁场加热高层大气、发射恒星风以及更一般地说在冷恒星整个演化过程中与其环境(星周盘、行星)的相互作用方面取得新进展提供关键数据。建议在各种规模和范围的飞行任务中使用紫外分光偏振法,从15米望远镜LUVOIR上的POLLUX到专门用于紫外分光偏振法的Arago M型飞行任务。

英文摘要:

Current burning issues in stellar physics, for both hot and cool stars, concern their magnetism. In hot stars, stable magnetic fields of fossil origin impact their stellar structure and circumstellar environment, with a likely major role in stellar evolution. However, this role is complex and thus poorly understood as of today. It needs to be quantified with high-resolution UV spectropolarimetric measurements. In cool stars, UV spectropolarimetry would provide access to the structure and magnetic field of the very dynamic upper stellar atmosphere, providing key data for new progress to be made on the role of magnetic fields in heating the upper atmospheres, launching stellar winds, and more generally in the interaction of cool stars with their environment (circumstellar disk, planets) along their whole evolution. UV spectropolarimetry is proposed on missions of various sizes and scopes, from POLLUX on the 15-m telescope LUVOIR to the Arago M-size mission dedicated to UV spectropolarimetry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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