Support of the Astronomical Research of the Cavendish Astrophysics Group

卡文迪什天体物理学组天文研究的支持

基本信息

批准号：
ST/V000918/1
负责人：
Christopher Haniff
金额：
$ 118.53万
依托单位：
University of Cambridge
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：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FV000918%2F1
关键词：
Support Astronomical Research Cavendish Astrophysics

项目摘要

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.

该提案要求支持剑桥的卡文犬天体物理学（CA）组。我们的研究非常重视观察天体物理学，并得到基本理论工作的支持，贝叶斯数据分析中的实质性轨道记录以及广泛的技术专业知识，这些技术跨越了从无线电到近红外波长的频谱。 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宇宙黎明，直到最近的时代。这将使用从红移9到0.7的新测量金属的新测量，并将探索银河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，从galactic介质中获得的增值，在此过程中起作用。我们将对Terra狩猎实验的数据进行首次分析，这是对附近恒星进行的10年调查，该恒星在Isaac Newton望远镜上使用仪器和新统计技术进行了深入的表征，并在Isaac Newton望远镜上进行了HARPS-3光谱仪，以减少从仪器效应引起的错误检测。在一项并行的研究中，我们将使用苔丝卫星的新数据将数据结合在一起，以完全表征附近K矮人附近的潜在行星，并使用新方法来消除因恒星不稳定而导致的虚假检测，这些探测很容易模仿低质量行星的签名。