arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2002.01560astro-ph.SR
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闪耀BRITE:通过先进的模型揭示恒星的变化

Shine BRITE: shedding light on stellar variability through advanced models

D. Fabbian, F. Kupka, D. Krueger, N. M. Kostogryz, N. Piskunov

摘要:

要正确解释下一代(特别是天基)观测设施提供的大量复杂数据,需要有非常强有力的理论基础。因此,人们可以预测,在不久的将来,通过使用三维辐射磁流体动力学(RMHD)代码获得的大气模型的使用,加上先进的辐射转移处理,包括非局部热力学平衡(非LTE)效应和极化,将成为规范。特别是,恒星的亮度变化在冷(i。例如,光谱型F、G、K和M)恒星的形成除了脉动外,还可以由几种不同的效应引起。我们简要地讨论了一些文献结果,并提到我们最近的一些进展。最后,我们试图窥探未来的理解这一重要方面的生命的恒星。

英文摘要:

The correct interpretation of the large amount of complex data from next-generation (in particular, space-based) observational facilities requires a very strong theoretical underpinning. One can thus predict that in the near future the use of atmospheric models obtained through the use of three-dimensional (3-D) radiation magnetohydrodynamics (RMHD) codes, coupled with advanced radiative transfer treatment including non-local thermodynamic equilibrium (non-LTE) effects and polarisation, will become the norm. In particular, stellar brightness variability in cool (i. e., spectral type F, G, K, and M) stars can be induced by several different effects, besides pulsation. We briefly discuss some literature results and mention some of our recent progress. Finally, we attempt to peek into the future of understanding this important aspect of the life of stars.

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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