Exoplanetary science with the Next Generation Transit Survey

系外行星科学与下一代凌日巡天

• 批准号: 1795021
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1795021
• 关键词: Exoplanetary; science; Next; Generation; Transit

The Next Generation Transit Survey (NGTS) is a new ground-based search for transiting exoplanets. Its primary goal is to find Neptune and Super-Earth sized planets around stars that are bright enough to enable follow-up studies to investigate the planet's atmospheric composition. NGTS builds on the heritage of SuperWASP, which found over 100 Jupiter-sized worlds around other stars. Although the Kepler mission has found thousands of exoplanets, most of those orbit stars that are too faint for follow-up work. By surveying a much larger fraction of the sky, NGTS will identify many of the nearest, brightest and most exciting exoplanets.The NGTS observatory consists of twelve 20cm telescopes working together to provide a wide 96 square degree field of view. Each telescope is equipped with a "deep depleted" CCD Camera that is most sensitive at red optical wavelengths, and therefore ideal for maximising the probability of finding small planets orbiting small, cool K and M dwarf stars. NGTS aims to achieve photometric precision of 0.1%, a factor 10 improvement on SuperWASP.The NGTS observatory is located at the European Southern Observatory's primary station at Paranal, Chile, the home of the famous VLT.The project will involve analysing and exploiting data from the survey. A key aim is to participate in obtaining follow-up photometric observations designed to distinguish genuine transit events from mimics such as binaries and line-of-sight triple systems. An additional aim is to develop techniques and algorithms to mine the NGTS data for rare and exotic objects that have been discovered in transiting surveys in recent years, for example giant ring systems, dust and debris clouds, planets being destroyed, and new phenomena like the "alien megastructures" star.

下一代过境调查（NGTS）是一项新的基于地面的搜索过境系外行星。它的主要目标是寻找海王星和超级地球大小的行星，这些行星围绕恒星运行，亮度足以进行后续研究，以调查行星的大气成分。NGTS建立在SuperWASP的基础上，SuperWASP在其他恒星周围发现了100多个彗星大小的世界。尽管开普勒使命已经发现了数千颗系外行星，但大多数系外行星的轨道都太暗，无法进行后续工作。NGTS观测站由12台20厘米口径的望远镜组成，共同提供96平方度的广阔视野，通过观测更大范围的天空，NGTS将识别出许多最近、最亮、最令人兴奋的系外行星。每个望远镜都配备了一个“深度耗尽”的CCD相机，它在红色光波段最敏感，因此非常适合最大限度地发现绕着小而冷的K和M矮星运行的小行星。NGTS的目标是达到0.1%的测光精度，比SuperWASP提高10倍。NGTS天文台位于欧洲南方天文台在智利帕拉纳尔的主站，著名的VLT的所在地。该项目将涉及分析和利用调查数据。一个关键目标是参与获得后续光度观测，以区分真正的凌日事件与双星和视线三重系统等模拟事件。另一个目标是开发技术和算法，以挖掘NGTS数据，寻找近年来在过境调查中发现的稀有和奇异物体，例如巨大的环系统，尘埃和碎片云，被摧毁的行星，以及“外星巨型结构”星星等新现象。

项目成果

NGTS-8b and NGTS-9b: two non-inflated hot-Jupiters

• DOI: 10.1093/mnras/stz3140
• 发表时间: 2019-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: J. Costes;C. Watson;C. Belardi;I. Braker;M. Burleigh;S. Casewell;P. Eigmüller;M. Günther;J. Ja

NGTS and WASP photometric recovery of a single-transit candidate from TESS

来自 TESS 的单凌日候选者的 NGTS 和 WASP 光度恢复

• DOI: 10.1093/mnras/stz3212
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Gill S

NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert

• DOI: 10.1051/0004-6361/201935206
• 发表时间: 2019-05
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: P. Eigmüller;A. Chaushev;E. Gillen;Alexis M. S. Smith;L. Nielsen;O. Turner;S. Csizmadia;B. Smalley-B.

Classifying exoplanet candidates with convolutional neural networks: application to the Next Generation Transit Survey

• DOI: 10.1093/mnras/stz2058
• 发表时间: 2019-07
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: A. Chaushev;L. Raynard;M. Goad;P. Eigmüller;David J Armstrong;J. Briegal;M. Burleigh;S. Casewell;S. Gill;J. Jenkins;L. Nielsen;C. Watson;R. West;P. Wheatley;S. Udry;J. Vines

NGTS-1b: a hot Jupiter transiting an M-dwarf

NGTS-1b：一颗热木星凌日 M 矮星

• DOI: 10.1093/mnras/stx2778
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Bayliss D