Collaborative Research: Characterizing the Trans-Neptunian Solar System with the Dark Energy Survey

合作研究：通过暗能量巡天表征海王星外太阳系

• 批准号: 1515015
• 负责人: David Gerdes
• 金额: $ 9.59万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1515015&HistoricalAwards=false
• 关键词: Collaborative; Research; Characterizing; Trans; Neptunian

Despite centuries of scanning the skies, it is only now that humans are able to begin to really search for and identify many of the most distant objects in our own Solar System, those that orbit well beyond Neptune. These objects are becoming accessible through ongoing surveys using telescopes on the Earth that scan large parts of the sky repeatedly. These surveys allow detection of very faint objects, as well as their motion and any changes in brightness. The objects are important to understand because they are the remnants of the early Solar System and can help us understand how our Solar System formed and evolved into what we see today. This project will capitalize on an ongoing survey in the southern hemisphere by developing new data processing tools to carry out an extensive search for transient and slow-moving objects in the survey images in order to characterize the most distant visible members of the Solar System. The proposal team will augment their successful outreach program to Philadelphia-area middle school teachers and community-based organizations through their partnership with the Franklin Institute to produce presentations and middle-school curricular materials on the outer solar system. A key component of the program will be a contest to suggest names for minor planets that are discovered in the data used in this project. The PIs will also mentor two graduate students and undergraduate students working in a large international team of astronomers and particle physicists from a myriad of cultural backgrounds through participation in this project.This is a collaborative proposal that seeks to expand the use of data being obtained as a part of the Dark Energy Survey (DES) using the Dark Energy Camera (DECam) on the Cerro-Tololo 4m telescope. In particular, they will extend the standard DES data processing in order to carry out an extensive search for transient and slow-moving objects in the DES images in order to characterize the most distant visible members of the Solar System, which orbit well beyond Neptune and are relics of major disturbances to the nascent Solar System. This will enable them to increase by a factor of ~10 the number of known Inner Oort Cloud bodies and other minor planets with perihelia beyond about 50 AU, which have dynamical and physical states that are largely unperturbed by interactions with the (known) planets over the age of the Solar System.

尽管几个世纪以来一直在扫描天空，但直到现在，人类才能够开始真正寻找和识别我们太阳系中许多最遥远的天体，那些轨道远远超出海王星的天体。 这些物体通过使用地球上的望远镜反复扫描天空的大部分进行持续的调查变得可以访问。 这些巡天观测允许探测非常微弱的物体，以及它们的运动和亮度的任何变化。 了解这些天体很重要，因为它们是早期太阳系的残余物，可以帮助我们了解太阳系是如何形成和演变成我们今天所看到的。 该项目将利用正在南半球进行的一项调查，开发新的数据处理工具，在调查图像中广泛寻找瞬变和缓慢移动的物体，以便确定太阳系最遥远可见成员的特征。 提案小组将通过与富兰克林研究所的合作伙伴关系，向费城地区的中学教师和社区组织提供成功的外展计划，以制作关于外太阳系的演讲和中学课程材料。该计划的一个关键组成部分将是一场竞赛，为在该项目使用的数据中发现的小行星命名。研究员们还将指导两名研究生和本科生在一个由来自各种文化背景的天文学家和粒子物理学家组成的大型国际团队中工作。这是一项合作提案，旨在扩大使用Cerro-Tololo 4米望远镜上的暗能量相机（DECam）获得的数据的使用范围，作为暗能量调查（DES）的一部分。 特别是，他们将扩大标准DES数据处理的范围，以便在DES图像中广泛搜索瞬时和缓慢移动的物体，从而确定太阳系最遥远的可见成员的特征，这些成员的轨道远远超出海王星，是新生太阳系重大扰动的遗迹。 这将使他们能够将已知的内奥尔特云天体和其他近日点超过约50 Au的小行星的数量增加约10倍，这些天体的动力学和物理状态在很大程度上不受太阳系年龄内（已知）行星相互作用的影响。

项目成果

Evaluating the Dynamical Stability of Outer Solar System Objects in the Presence of Planet Nine

评估第九行星存在时太阳系外天体的动态稳定性

• DOI: 10.3847/1538-3881/aa7aa2
• 发表时间: 2017
• 期刊: The Astronomical Journal
• 作者: Becker, Juliette C.;Adams, Fred C.;Khain, Tali;Hamilton, Stephanie J.;Gerdes, David
• 通讯作者: Gerdes, David

Discovery and Physical Characterization of a Large Scattered Disk Object at 92 au

92 au 处大型分散盘状天体的发现和物理表征

• DOI: 10.3847/2041-8213/aa64d8
• 发表时间: 2017
• 期刊: The Astrophysical Journal
• 作者: Gerdes, D. W.;Sako, M.;Hamilton, S.;Zhang, K.;Khain, T.;Becker, J. C.;Annis, J.;Wester, W.;Bernstein, G. M.;Scheibner, C.
• 通讯作者: Scheibner, C.