New Applicant Scheme Consolidated Grant Application in Solar System Studies- Towards the Solar System's Edge: Exploring the Inner Oort Cloud

新申请人计划太阳系研究综合拨款申请-走向太阳系边缘：探索内部奥尔特云

• 批准号: ST/V000691/1
• 负责人: Megan Schwamb
• 金额: $ 28.74万
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FV000691%2F1
• 关键词: New; Applicant; Scheme; Consolidated; Grant

Since the discovery of Sedna in 2007, the past decade has seen the discovery of a population of distant Solar System objects (often referred to as Inner Oort cloud objects [IOCs]) on a highly eccentric orbits beyond the Kuiper belt. The very existence of these distant small bodies challenges our understanding of the Solar System. These orbits are well beyond the reach of the known giant planets and could not be scattered into their highly eccentric orbits from interactions with Neptune alone. IOCs orbit too far from the edge of the Solar System to feel the perturbing effects of passing stars or galactic tides in the present-day solar neighborhood. Some other mechanism in the Solar System current or past architecture is required to emplace these extreme Solar System minor planets on their orbits. The orbits of these distant planetoids are the fossilized record of their formation. Each of the proposed scenarios offered to explain the formation of the IOCs leaves a distinctive imprint on the members of this distant population and has profound consequences for our understanding of the Solar System's origin and evolution. The majority of the known IOCs appear to come to perihelion at similar locations on the sky, which is currently proposed to be due to the active gravitational shepherding from an unseen 9th planet at ~200 au or beyond. Although there is compelling evidence to suggest the possibility of an ice giant planet beyond Neptune, there are results from other modern-day out Solar System surveys that seem to conflict with this hypothesis. To help unravel this mystery, this New Applicant Scheme proposal seeks to study the origin and properties of this distant collection of planetesimals and what they reveal about the dynamical history and environment of the outer Solar System.

自2007年发现SEDNA以来，在过去的十年中，发现了一个远处的太阳系对象（通常称为内部Oort云对象[IOC]）在Kuiper Beld以外的高偏心轨道上发现了一个群体。这些遥远的小身体的存在挑战了我们对太阳系的理解。这些轨道远远超出了已知的巨型行星的范围，并且不能仅与海王星的相互作用散布到高度偏心的轨道中。 IOC轨道距离太阳系边缘太远，无法感受到当今太阳能社区中恒星或银河潮汐的扰动效应。在太阳系当前或过去建筑中需要其他一些机制来将这些极端的太阳系次要行星放在轨道上。这些遥远的星球类动物的轨道是它们形成的化石记录。旨在解释IOC形成的每个建议的场景给这个遥远人群的成员留下了独特的烙印，并对我们对太阳系的起源和进化产生了深远的影响。大多数已知的IOC似乎都在天空的类似位置来到近日座，目前被认为是由于来自〜200 au或以后的一个看不见的第9行的主动重力牧羊。尽管有令人信服的证据表明，海王星以外的冰巨星的可能性，但其他现代太阳系调查的结果似乎与这一假设相抵触。为了帮助解开这个谜团，这项新的申请计划提案旨在研究这个遥远的行星收集的起源和特性及其对外部太阳系的动态历史和环境的揭示。

项目成果

Col-OSSOS: Evidence for a Compositional Gradient Inherited from the Protoplanetary Disk?

Col-OSSOS：从原行星盘继承的成分梯度的证据？

• DOI: 10.3847/psj/ace7d0
• 发表时间: 2023
• 期刊: The Planetary Science Journal
• 作者: Marsset M

Col-OSSOS: The Two Types of Kuiper Belt Surfaces

Col-OSSOS：柯伊伯带表面的两种类型

• DOI: 10.3847/psj/acc844
• 发表时间: 2023
• 期刊: The Planetary Science Journal
• 作者: Fraser W

Col-OSSOS: The Distribution of Surface Classes in Neptune's Resonances

Col-OSSOS：海王星共振中表面类别的分布

• DOI: 10.3847/psj/ace2c2
• 发表时间: 2023
• 期刊: The Planetary Science Journal
• 作者: Pike R

The LCO Outbursting Objects Key Project: Overview and Year 1 Status

• DOI: 10.3847/psj/ac7a31
• 发表时间: 2022-06
• 期刊: The Planetary Science Journal
• 作者: T. Lister;M. Kelley;Carrie E. Holt;H. Hsieh;M. Bannister;Aayushi A. Verma;M. Dobson;M. Knight;Y. Moulane;M. Schwamb;D. Bodewits;J. Bauer;J. Chatelain;E. Fern'andez-Valenzuela;D. Gardener;G. Gyuk;M. Hammergren;K. Huynh;E. Jehin;R. Kokotanekova;E. Lilly;M. Hui;A. McKay;C. Opitom;S. Protopapa;R. Ridden-Harper;C. Schambeau;C. Snodgrass;Cai Stoddard-Jones;H. Usher;K. Wierzchoś;P. Yanamandra-Fisher;Q. Ye 叶;E. Gomez;S. Greenstreet

Phase Curves of Kuiper Belt Objects, Centaurs, and Jupiter-family Comets from the ATLAS Survey

ATLAS 巡天中柯伊伯带天体、半人马座和木星族彗星的相位曲线

• DOI: 10.3847/psj/acc463
• 发表时间: 2023
• 期刊: The Planetary Science Journal
• 作者: Dobson M