Unveiling the Architecture of Nearby Planetary Systems by Direct Imaging, from Gas Giants to Habitable New Worlds

通过直接成像揭示附近行星系统的结构，从气态巨行星到适合居住的新世界

• 批准号: RGPIN-2019-06419
• 负责人: Marois, Christian
• 金额: $ 2.04万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=682956
• 关键词: Unveiling; Architecture; Nearby; Planetary; Systems

The search for rocky habitable exoplanets is one of the last frontiers of astronomy. The task is quite difficult, as those small Earth-size planets are 1,000x less massive and up to 10 billion times fainter at visible light than their central star. Direct imaging is the only technique that will allow the discovery and characterization of Earth-like planets around nearby Sun-like stars. My main career-long objective is to develop the technology for direct exoplanet imaging to finally allow the discovery and the detailed characterization of these worlds. The ultimate discovery would be the identification of life signatures on a distant exoplanet. For the next 5 years, I am proposing to expand the work that I started by performing frontier science observations and key instrument development projects.******My main short-term science objective will be to continue my involvement in large observing campaigns, using the Gemini Planet Imager instrument (GPI) at the Gemini telescope, the SCExAO instrument at Subaru, and the upcoming James Webb Space Telescope (JWST), to find, to characterize, and to derive the distribution of young gas- and ice-giants, the ones we can discover with current and near future imaging instruments. With only a handful currently known by direct imaging, more are needed to derive meaningful statistics. The discovery and characterization of new systems is fundamental for understanding their orbital parameters/distribution, their composition, their clouds, their multi-planet interactions, and for learning about their formation process.******For instrumentation projects, my focus will be on developing transformative technologies that will enable, in the next decade, the imaging discovery of Earth-size rocky exoplanets in the solar neighborhood. These instrument efforts will be part of my new high-contrast imaging NRC laboratory, NEW EARTH. This laboratory, the first in Canada with only a few comparable worldwide, will be the center piece of my team instrument-focus research activities for the next decade. The first two projects will be to (1) take the lead of a Gemini Planet Imager upgrade (currently being assembled on the bench by my current PhD student), and to (2) finish designing and testing a 10 microns imager prototype to search for the thermal signature of habitable exoplanets in the Alpha Centauri system. Future work will focus on visible-band high-contrast imaging solutions and advanced spectral characterization systems.******The proposed research program will expand and amplify the work I started with University of Victoria students 5 years ago with my previous NSERC grant. With access to our NEW EARTH lab to design, test and deploy frontier technologies, to exciting science campaigns from both ground- and spaced-based instruments, and to breakthrough discoveries, I expect our team to significantly contribute to the search of Earth 2.0 and life outside our Solar system.

寻找适合居住的岩石系外行星是天文学最后的前沿之一。这项任务相当困难，因为这些小的地球大小的行星质量是其中心星星的1,000倍，在可见光下要暗100亿倍。直接成像是唯一的技术，将允许发现和描述附近的太阳类恒星周围的类地行星。我职业生涯的主要目标是开发直接系外行星成像技术，最终允许发现和详细描述这些世界。最终的发现将是在遥远的系外行星上识别生命特征。在接下来的5年里，我建议通过执行前沿科学观测和关键仪器开发项目来扩大我开始的工作。我的主要短期科学目标将是继续参与大型观测活动，使用双子座望远镜的双子座行星成像仪（GPI），斯巴鲁的SCExAO仪器和即将到来的詹姆斯韦伯太空望远镜（JWST），寻找，描述和推导年轻的气体和冰巨星的分布，我们可以用当前和不久的将来发现成像仪器。目前只有少数通过直接成像已知，需要更多的数据来获得有意义的统计数据。新系统的发现和表征对于理解它们的轨道参数/分布，它们的组成，它们的云，它们的多行星相互作用以及了解它们的形成过程至关重要。对于仪器项目，我的重点将是开发变革性技术，这些技术将在未来十年内实现在太阳附近发现地球大小的岩石系外行星的成像。这些仪器工作将成为我新的高对比度成像NRC实验室“新地球”的一部分。这个实验室是加拿大的第一个，在世界范围内只有少数几个类似的实验室，将是我的团队在未来十年内以仪器为重点的研究活动的中心。前两个项目将是（1）领导双子座行星成像仪升级（目前正在由我目前的博士生在工作台上组装），以及（2）完成设计和测试10微米成像仪原型，以搜索半人马座阿尔法系统中可居住系外行星的热特征。未来的工作将集中在可见波段高对比度成像解决方案和先进的光谱表征系统。拟议的研究计划将扩大和放大的工作，我开始与维多利亚大学的学生5年前与我以前的NSERC赠款。通过访问我们的新地球实验室来设计，测试和部署前沿技术，从地面和空间仪器到令人兴奋的科学活动，以及突破性的发现，我希望我们的团队能够为地球2.0和太阳系外生命的搜索做出重大贡献。