Support of the Astronomical Research of the Cavendish Astrophysics Group

这个提议请求剑桥的卡文迪什天体物理学（CA）小组的支持。我们的研究非常重视观测天体物理学，由基础理论工作，贝叶斯数据分析的大量跟踪记录以及从无线电到近红外波长的频谱技术的广泛专业知识支持。我们的目标是在一些专题领域开展工作，在这些领域我们通过实验或领导角色做出了重大贡献，或者我们将为下一代天体物理学实验开发新技术。主题1 -星系形成和演化：我们将利用我们从JWST的NIRSpec仪器和MOONS多功能卫星上获得的新的专有数据，天体摄谱仪来研究星系的化学富集，从它们形成的时候，在宇宙黎明，通过更近的时代。这将使用从红移9到0.7的星系金属丰度的新测量，并将探索星系环境对星系化学演化的影响以及不同反馈机制的程度，例如，在这一过程中，星系间介质的吸积作用发挥了作用。我们将利用我们在精确径向速度测量方面的专业知识，领导对类地系外行星的搜索。我们将对“陆地狩猎实验”的数据进行首次分析，用艾萨克·牛顿望远镜的HARPS-3摄谱仪对附近的恒星进行了为期10年的调查，仪器的深度特性和新的统计技术，以减少仪器效应引起的错误检测。在一项平行的研究中，我们将把来自HARPS-N摄谱仪的联合收割机数据与来自TESS卫星的新数据结合起来，以充分识别附近K矮星周围的潜在行星，使用新方法来消除恒星不稳定性导致的虚假检测，这可以很容易地模仿低质量行星的特征。

This proposal requests support for the Cavendish Astrophysics (CA) group in Cambridge. Our research has a strong emphasis on observational astrophysics, backed by fundamental theoretical work, a substantial track-record in Bayesian data analysis, and extensive expertise in technologies that span the spectrum from radio to near-infrared wavelengths. We aim to work in a number of thematic areas where we have contributed significantly either experimentally or via leadership roles, or where we will be developing new technologies for next generation experiments in astrophysics.Theme 1 - Galaxy formation and Evolution: we will exploit our access to new proprietary data from JWST's NIRSpec instrument and the MOONS multi-object spectrograph to investigate the chemical enrichment of galaxies from the time they were formed, at Cosmic Dawn, through to more recent epochs. This will use new measurements ofgalactic metallicities from redshifts 9 through 0.7, and will explore the impact of the galactic environment on the chemical evolution of galaxies and the extent to whichdifferent feedback mechanisms, e.g., accretion from the intergalactic medium, play a role in this process.Theme 3 - Exoplanet discovery: we will build on our expertise in precision radial-velocity measurement to lead the search for Earth-like exoplanets.We will perform the first analysis of data from the Terra Hunting Experiment, a 10-year survey of nearby stars with the HARPS-3 spectrograph at the Isaac Newton Telescope using an in-depth characterisation of the instrument and new statistical techniques to reduce false detections arising from instrumental effects. In a parallel study, we will combine data from the HARPS-N spectrograph with new data from the TESS satellite to fully characterise potential planets around nearby K dwarfs, usingnew methods to remove spurious detections resulting from stellar instabilities which can easily mimic the signatures of low-mass planets.