Exploring Trans-Neptunian Space with TESS: A Targeted Shift-stacking Search for Planet Nine and Distant TNOs in the Galactic Plane
Exploring Trans-Neptunian Space with TESS: A Targeted Shift-stacking Search for Planet Nine and Distant TNOs in the Galactic Plane
复制标题
利用 TESS 探索海王星外空间：在银河平面上对第九行星和遥远的海王星天体进行有针对性的移位叠加搜索
DOI：
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发表时间：
2020
影响因子：
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通讯作者：
G. Laughlin
中科院分区：
文献类型：
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作者：
M. Rice;G. Laughlin
我们展示了一条定制设计的新管道的结果，该管道使用NASA凌日系外行星勘测卫星（TESS）使命的全帧图像数据来搜索微弱的、未被发现的太阳系天体。在沿着感兴趣的沿着合理轨道路径对齐和共同添加帧之前，该流水线移除每个像素的基线通量。我们首先通过恢复三个海王星外天体-90377 Sedna（V = 20.64），2015 BP 519（V = 21.81）和2007 TG 422（V = 22.32）的信号来展示管道的性能-两者都是通过沿其已知的天空投影路径沿着移位堆叠和盲恢复。然后，我们在TESS扇区18和19的概念验证调查中应用这种盲搜索过程，这些扇区延伸到北方半球的银河平面的一部分。我们在地心距离d = 70-800 Au的暗天体中寻找行星九和任何以前未知的分离的柯伊伯带天体，这些天体可能会揭示行星九的假设。在没有输入轨道信息的情况下，我们目前的管道可以可靠地恢复银河平面中V < 21和当前距离d = 150 Au的遥远太阳系天体的信号，我们详细说明了未来优化的路径，以推动这些限制。本文介绍的方法将为利用TESS对遥远太阳系进行全天移叠加巡天奠定基础。
We present results from a new pipeline custom-designed to search for faint, undiscovered solar system bodies using full-frame image data from the NASA Transiting Exoplanet Survey Satellite (TESS) mission. This pipeline removes the baseline flux of each pixel before aligning and coadding frames along plausible orbital paths of interest. We first demonstrate the performance of the pipeline by recovering the signals of three trans-Neptunian objects—90377 Sedna (V = 20.64), 2015 BP519 (V = 21.81), and 2007 TG422 (V = 22.32)—both through shift-stacking along their known sky-projected paths and through a blind recovery. We then apply this blind-search procedure in a proof-of-concept survey of TESS Sectors 18 and 19, which extend through a portion of the Galactic plane in the Northern Hemisphere. We search for dim objects at geocentric distances d = 70–800 au in a targeted search for Planet Nine and any previously unknown detached Kuiper Belt objects that may shed light on the Planet Nine hypothesis. With no input orbital information, our present pipeline can reliably recover the signals of distant solar system bodies in the Galactic plane with V < 21 and current distances d ≲ 150 au, and we elaborate on paths forward to push these limits in future optimizations. The methods described in this paper will serve as a foundation for an all-sky shift-stacking survey of the distant solar system with TESS.
DOI：
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发表时间：
2018-12
期刊：
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影响因子：
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作者：
J. V. M. Cardoso;C. Hedges;M. Gully-Santiago;Nicholas Saunders;A. Cody;T. Barclay;O. Hall;
通讯作者：
J. V. M. Cardoso;C. Hedges;M. Gully-Santiago;Nicholas Saunders;A. Cody;T. Barclay;O. Hall;