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arXiv 0906.3486astro-ph.IMastro-ph.EP
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发现和描述太阳系外行星的工具

Tools for discovering and characterizing extrasolar planets

András Pál

摘要:

在太阳系外行星群中,凌日行星提供了一个很好的机会,可以直接测量这些物体的基本物理特性,如质量和半径。因此,这些行星在理解行星系统的演化和形成方面非常重要:从测光凌日的观测中,行星的内部结构和大气特性也可以受到限制。寻找凌日系外行星最有效的方法是基于广域观测,通过在相当长的时间间隔内寻找光变曲线中短而浅的周期性下降。这些测量监测直径为几度的场,同时监测数万或数十万个物体。在天文观测实践中,大视场的测量是相当新的,因此需要以前没有使用过的测光数据处理的特殊方法。在这篇博士论文中,我总结了我的努力,涉及到一个完整的软件解决方案的发展,高精度光度减少天文图像。我还展示了这个新开发的软件包和相关算法的作用,特别是发现的HATNet项目的情况下。[删节]

英文摘要:

Among the group of extrasolar planets, transiting planets provide a great opportunity to obtain direct measurements for the basic physical properties, such as mass and radius of these objects. These planets are therefore highly important in the understanding of the evolution and formation of planetary systems: from the observations of photometric transits, the interior structure of the planet and atmospheric properties can also be constrained. The most efficient way to search for transiting extrasolar planets is based on wide-field surveys by hunting for short and shallow periodic dips in light curves covering quite long time intervals. These surveys monitor fields with several degrees in diameter and tens or hundreds of thousands of objects simultaneously. In the practice of astronomical observations, surveys of large field-of-view are rather new and therefore require special methods for photometric data reduction that have not been used before. In this PhD thesis, I summarize my efforts related to the development of a complete software solution for high precision photometric reduction of astronomical images. I also demonstrate the role of this newly developed package and the related algorithms in the case of particular discoveries of the HATNet project. [abridged]

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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