什么因素调控了遥远星系中的恒星形成？

该项目通过利用 KMOS 和 ALMA 观测数据研究恒星与黑洞产生的风，旨在探究遥远星系中恒星形成的过程规律。博士候选人将分析空间分辨光谱，以测定星系风的属性，并评估这些风在宇宙早期阶段对星系成长的作用。

About the project What regulates star formation in distant galaxies? Using observations from K-band Multi Object Spectrograph ( KMOS) spectroscopy and the Atacama Large Millimeter/submillimeter Array (ALMA), you'll investigate winds driven by stars and black holes and their impact on the gas fuelling star formation 10 billion years ago. Combining existing and new data, you will test whether these winds regulate galaxy growth. Around 10 billion years ago the Universe was at its most active. During this epoch, galaxies contained vast reservoirs of cold gas that fuelled intense star formation. Yet, despite decades of observations, we still do not understand what regulates star formation under the extreme physical conditions of the early Universe. Is star formation regulated by the energy released by young stars and supermassive black holes? This feedback occurs when stars and supermassive black holes inject energy into their surroundings and launch powerful winds that can remove or redistribute gas. However, it remains unclear whether these outflows are frequent and powerful enough to regulate star formation, or how effectively they affect the cold gas reservoirs that feed galaxy growth. In this project, you'll combine spatially resolved spectroscopy from the KMOS instrument on ESO’s Very Large Telescope with cold molecular gas observations from the Atacama Large Millimeter/submillimeter Array (ALMA). You'll search for galactic winds, measure their physical properties and investigate their impact on the gas reservoirs and star-forming activity of their host galaxies. You'll also contribute to developing automated techniques to analyse large numbers of astronomical data cubes. Starting from existing datasets, you'll expand the sample with archival data and new observations from ongoing projects, and determine how much galactic winds contribute to regulating star formation in the distant Universe. You'll receive training in the reduction, analysis and interpretation of state-of-the-art astronomical observations, including integral-field spectroscopy from KMOS and ALMA interferometric data. You'll develop expertise in analysing spatially resolved spectra, measuring the physical properties of galactic winds, and characterising the cold gas reservoirs of distant galaxies. You'll also gain experience in statistical methods to analyse large astronomical datasets, assess uncertainties and test scientific hypotheses. You'll contribute to ongoing work developing and testing machine-learning algorithms for the automated analysis of large numbers of spectroscopic data cubes, gaining practical experience in applying these techniques to observational astronomy. Working with your supervisors and collaborators, you'll develop expertise in the physics of supermassive black holes and their impact on galaxy evolution. You'll develop transferable skills in scientific programming, data analysis, critical thinking, research communication and collaborative working, with opportunities to participate in an international observational survey and present your results at national and international conferences. The School of Physics and Astronomy is committed to promoting equality, diversity inclusivity as demonstrated by our Athena SWAN award. We welcome all applicants regardless of their gender, ethnicity, disability, sexual orientation or age, and will give full consideration to applicants seeking flexible working patterns and those who have taken a career break. The University has a generous maternity policy, onsite childcare facilities, and offers a range of benefits to help ensure employees’ well-being and work-life balance. The University of Southampton is committed to sustainability and has been awarded the Platinum EcoAward.

入学要求 英国南安普顿大学授予的2:1荣誉学位，或其国际等效学位，且专业为以下领域之一： 物理学 天文学 天体物理学 一个密切相关的学科领域 必备技能： 对星系形成与演化有浓厚的兴趣，并具备学习新科学概念与技术的意愿。 熟悉使用 Python 或类似语言进行科学编程，并愿意进一步提升这些技能 具备出色的分析与解决问题能力，能够独立及协作工作 良好的沟通技巧以及参与科学讨论的意愿 理想的技能： 关于成像、光谱学或其他观测数据集等天文数据分析的先前经验 例如通过本科或硕士研究项目所积累的科学计算、统计分析或建模相关经验 对星系演化、河外天文学或宇宙学方面的熟悉程度

资助：竞争性资助 学费与资助 我们为英国本土学生和国际学生提供多种资助机会。符合条件的学生可通过“地平线欧洲”学费减免，自动免除国际学生学费与英国本土学生学费之间的差额。 大学通过竞争性遴选授予的校长助学金，为遴选排名靠前的申请人支付国际学生学费与英国本土学生学费之间的差额。 本校各学院通过竞争性遴选提供的博士奖助金，通常为遴选排名靠前的申请人支付按英国本土学生标准收取的学费，并提供生活津贴。 资助采用滚动授予方式，因此请尽早申请，以尽可能增加进入资助评选的机会。 如需了解更多信息，请访问我们的研究生研究资助页面。

如何申请 您需： 选择课程类型（研究型）、2027/28学年、工程与物理科学学院 选择全日制或非全日制 搜索项目：哲学博士物理专业（7089） 在申请表第2部分填写导师姓名 申请材料应包括： 您的CV（个人简历） 2份学术推荐信 截至目前的学位课程成绩单和证书 英语语言资格证明（如适用）