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arXiv 2104.12403astro-ph.EP
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K2 Campaign 9大样本小行星自转周期的确定

Determination of rotation periods for a large sample of asteroids from K2 Campaign 9

Edyta Podlewska-Gaca, Radosław Poleski, Przemysław Bartczak, Iain McDonald, András Pál

摘要:

开普勒任务是研究遥远宇宙中不同类型天体或事件的有力工具。然而,航天器也有机会研究太阳系物体通过望远镜的视野。本文的目的是首次确定开普勒卫星在K2 Campaign 9期间观测到的一些小行星的自转周期。利用开普勒任务的公开数据,我们使用修正的因果像素模型(MCPM)程序对1026颗小行星进行了类孔径测光和类PRF测光。结果使我们能够确定188颗小行星的自转周期。对于先前测量过旋转周期的小行星,我们比较了结果,发现非常一致。另外还有20颗小行星,我们得到了旋转周期的下限,在所有情况下,这些限制至少为100小时。

英文摘要:

Kepler mission is a powerful tool in the study the different types of astrophysical objects or events in the distant Universe. However, the spacecraft gives also the opportunity to study Solar System objects passing in the telescope field of view. The aim of this paper is to determine for the first time the rotation periods of a number of asteroids observed by the Kepler satellite during the K2 Campaign 9. Using publicly available data from Kepler mission we have used the Modified Causal Pixel Model (MCPM) code to perform the aperture-like and PRF-like photometry of 1026 asteroids. The results allowed us to determine the rotation periods for 188 asteroids. For asteroids with rotation periods previously measured, we compared the results and found very good agreement. There are additional 20 asteroids for which we obtained lower limits on rotation periods and in all cases these limits are at least 100 h.

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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