arXiv 0902.29662009-02-17astro-ph.SR

恒星和恒星系统的时间变率

Temporal Variability of Stars and Stellar Systems

T. A. Lister, T. S. Metcalfe, T. M. Brown, R. A. Street

备注：: Submitted as a White Paper to the SSE Panel of the Astro2010 Decadal Survey

摘要：

尽管太阳是离我们最近的恒星，而且太阳黑子的记录可以追溯到古代中国，但我们对太阳磁场的了解还远远不够。事实上，即使是现在，经过几十年的研究，太阳磁场最明显的表现形式（如太阳黑子、耀斑和日冕）仍然几乎没有被理解。尽管我们付出了巨大的努力，但这些失败表明，为了提高我们对恒星中磁场和天体物理发电机的总体把握，我们必须扩大太阳以外的例子基础;我们必须研究具有各种年龄、质量、自转速率和其他性质的恒星，这样我们就可以在尽可能广泛的情况下测试模型。在今后十年中，一系列间接技术将得到迅速成熟的新能力的补充，如陀螺年代学、星震学和空间精密测光，这将改变我们对恒星和恒星系统时间变化的理解。在本白皮书中，我们将概述该领域的一些关键科学问题，以及可用于为这些问题带来新见解的技术。

英文摘要：

Although the Sun is our closest star by many orders of magnitude and despite having sunspot records stretching back to ancient China, our knowledge of the Sun's magnetic field is far from complete. Indeed, even now, after decades of study, the most obvious manifestations of magnetic fields in the Sun (e.g. sunspots, flares and the corona) are scarcely understood at all. These failures in spite of intense effort suggest that to improve our grasp of magnetic fields in stars and of astrophysical dynamos in general, we must broaden our base of examples beyond the Sun; we must study stars with a variety of ages, masses, rotation rates, and other properties, so we can test models against as broad a range of circumstances as possible. Over the next decade, an array of indirect techniques will be supplemented by rapidly maturing new capabilities such as gyrochronology, asteroseismology and precision photometry from space, which will transform our understanding of the temporal variability of stars and stellar systems. In this White Paper we will outline some of the key science questions in this area along with the techniques that could be used to bring new insights to these questions.

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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