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arXiv 2102.09059astro-ph.EPastro-ph.IM
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一种新的先跟踪后检测多历元流水线搜索L4地球特洛伊小行星

A Search for L4 Earth Trojan Asteroids Using a Novel Track-Before-Detect Multi-Epoch Pipeline

Noah Lifset, Nathan Golovich, Eric Green, Robert Armstrong, Travis Yeager

摘要:

地球特洛伊小行星是一个重要但难以捉摸的群体,与地球在L4和L5拉格朗日点共轨。已知的只有一个,但理论上,大量的人口是稳定的,可以提供对太阳系过去和现在以及行星防御的深入了解。在本文中,我们提出了一个地球特洛伊木马调查的结果,使用一种新的移位和堆栈检测方法的两个晚上的数据从暗能量相机。我们没有发现新的地球特洛伊小行星。我们计算的人口上限是一致的,尽管少得多的天空覆盖率与以前的搜索。此外,我们阐述了以前的上限计算使用当前的小行星人口统计数据和广泛的小行星模拟,以提供最新的人口约束。我们发现L4 Earth Trojan种群的NET < 1(H = 13.93)、NET < 7(H = 16)和NET < 938(H = 22)。

英文摘要:

Earth Trojan Asteroids are an important but elusive population that co-orbit with Earth at the L4 and L5 Lagrange points. There is only one known, but a large population is theoretically stable and could provide insight into our solar system's past and present as well as planetary defense. In this paper, we present the results of an Earth Trojan survey that uses a novel shift-and-stack detection method on two nights of data from the Dark Energy Camera. We find no new Earth Trojan Asteroids. We calculate an upper limit on the population that is consistent with previous searches despite much less sky coverage. Additionally, we elaborate on previous upper limit calculations using current asteroid population statistics and an extensive asteroid simulation to provide the most up to date population constraints. We find an L4 Earth Trojan population of NET < 1 for H = 13.93, NET < 7 for H = 16, and NET < 938 for H = 22.

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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