Ices: from molecular cloud to ocean

冰：从分子云到海洋

• 批准号: ST/M000974/1
• 负责人: Stephen Price
• 金额: $ 13.44万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FM000974%2F1
• 关键词: Ices; molecular; cloud; ocean

Ices of various forms are found throughout our Milky Way Galaxy, from the large "molecular clouds" in which stars and planets form, in interstellar space, and in our own Solar System, on the surfaces of the Earth, the satellites of Jupiter and Saturn, on asteroids, and on comets. It is very likely that water was delivered to the Earth during its formative years by the impacts of comets and asteroids in the kind of event that exterminated the dinosaurs 60 million years ago. Furthermore, these impacting bodies carry organic material, which may have been crucial to the emergence of life on Earth: comets and asteroids bring life and death! This project will study how cosmic ice evolves, from the environments of embryonic stars, to the ices and even oceans in the Solar System. We will be using laboratory experiments, including the world's most powerful light source, the Diamond Light Source in Oxfordshire, to study how the ices change as they are exposed to simulated cosmic environments such as cosmic radiation and ultraviolet light. This work might give us a glimpse as to how life began on Earth.

从我们的银河系星系中发现了各种形式的ic，从大型的“分子云”中，恒星和行星在地球的表面，木星和土星的卫星，小行星上和彗星上形成了恒星和行星在我们自己的太阳系中形成的。在灭绝6000万年前恐龙的事件中，彗星和小行星的影响很有可能在其成长的几年中被水输送到地球。此外，这些影响的身体携带有机材料，这可能对地球生命的出现至关重要：彗星和小行星带来生死！该项目将研究宇宙冰如何从胚胎恒星的环境中发展为太阳系中的冰甚至海洋。我们将使用实验室实验，包括世界上最强大的光源，牛津郡的钻石光源，以研究冰的暴露于模拟宇宙环境（例如宇宙辐射和紫外线光）时如何变化。这项工作可能使我们了解生活在地球上的开始。

项目成果

Bimolecular reactions of the dications and trications of atoms and small molecules in the gas-phase

• DOI: 10.1080/0144235x.2017.1283844
• 发表时间: 2017-01-01
• 期刊: INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY
• 影响因子: 6.1
• 作者: Price, Stephen D.;Fletcher, James D.;Parkes, Michael A.
• 通讯作者: Parkes, Michael A.

A new study of an old sink of sulphur in hot molecular cores: the sulphur residue

• DOI: 10.1093/mnras/stv652
• 发表时间: 2015-03
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: P. Woods;A. Occhiogrosso;S. Viti;Z. Kaňuchová;M. Palumbo;S. Price

The surface reactivity of acrylonitrile with oxygen atoms on an analogue of interstellar dust grains

丙烯腈与氧原子在星际尘埃颗粒类似物上的表面反应性

• DOI: 10.1093/mnras/sty587
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Kimber H