揭示HD 36030的双星性——最热的耀斑之一

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS
Galaxies Pub Date : 2023-04-12 DOI:10.3390/galaxies11020055
O. Maryeva, P. Németh, S. Karpov
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引用次数: 0

摘要

开普勒和TESS太空任务通过记录大量来自类太阳恒星的超级耀斑,以及探测来自a -f光谱类型的较热恒星的耀斑,极大地扩展了我们对哪种类型的恒星显示耀斑活动的认识。目前,我们知道耀斑发生在和b型恒星一样热的恒星上。然而,热B-A型恒星的大气结构与后期类型的大气结构有很大的不同,因此,B-A型恒星中耀斑的发生需要我们对耀斑形成的理论观点进行一些扩展,因此需要对单个物体进行详细的研究。在这里,我们介绍了我们对HD 36030的光谱和光度研究的结果,这是一颗被TESS卫星探测到耀斑的b9v恒星。我们获得的光谱表明,这颗恒星是一个具有低质量次级成分的双星系统,但光曲线缺乏与轨道运动或表面磁场相关的任何周期性变化的迹象。正因为如此,我们认为耀斑起源于系统组件之间的磁相互作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Revealing the Binarity of HD 36030—One of the Hottest Flare Stars
The Kepler and TESS space missions significantly expanded our knowledge of what types of stars display flaring activity by recording a vast amount of super-flares from solar-like stars, as well as detecting flares from hotter stars of A-F spectral types. Currently, we know that flaring occurs in the stars as hot as B-type ones. However, the structures of atmospheres of hot B-A stars crucially differ from the ones of late types, and thus the occurrence of flaring in B-A type stars requires some extension of our theoretical views of flare formation and therefore a detailed study of individual objects. Here we present the results of our spectral and photometric study of HD 36030, which is a B9 V star with flares detected by the TESS satellite. The spectra we acquired suggest that the star is in a binary system with a low-mass secondary component, but the light curve lacks any signs of periodic variability related to orbital motion or surface magnetic fields. Because of that, we argue that the flares originate due to magnetic interaction between the components of the system.
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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