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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/exoplanets
课程评论：没有评论
课程名称：系外行星的多样性 课程概述：在这门MOOC课程中，您将有机会练习多种系外行星的探测与表征方法。您将发现系外行星的统计特性以及我们在这一新兴研究领域的当前知识状态。同时，您还将了解各种探测技术的局限性和偏差。课程结束时，您将对系外行星及其大气的探测与表征方法有一个良好的总体了解。 课程大纲： 1. **基础知识**：介绍天体物理学的基本概念，包括宇宙观念的历史演变和现代“天体力学”的构建，学习开普勒的三大定律及原行星盘、行星及恒星形成的基本概念，以建立探索系外行星的基础。 2. **行星探测 I**：探讨三种探测系外行星的方法：径向 velocities（首次探测热木星的技术）、天体测量（受到Gaia卫星的推动）和直接成像（真正观察行星伴星的方法）。此模块将强调即使无数学背景，您也能跟上课程进度。 3. **行星探测 II**：专注于边缘观测下的行星及其跨越恒星的情况，探讨通过日凌（翻转与掩星）观察提供的丰富参数，这是研究行星结构与内在特性的主要技术。 4. **统计结果 I**：探讨行星系统的统计特性，采用时间顺序方法，比较径向速度程序与最近的日凌调查结果，为您展示系外行星研究中的多样性发现。 5. **统计结果 II**：深入分析检测到的系外行星系统的特性，理解行星特性与中央恒星质量之间的联系，以及多行星系统的动力学与其稳定性的影响因素。 6. **表面与大气**：从统计分析转向系外行星的表面与大气特性，通过径向速度测量与日凌观测结合了解行星的平均密度及其内部结构。 7. **系外行星大气的最新动态**：更新关于系外行星大气的新见解，自2014年课程首次发布以来的最新研究成果，让您如同参与一场科学会议。 这门课程通过深入且系统的方式，帮助您全面理解系外行星探测与表征的最新进展和现状，适合对天文学和宇宙探索感兴趣的学习者。
Name:Cover the basics
Description:If you want to talk about exoplanets, there is no miracle, you have to go through the fundamentals of astrophysics. This is why we propose that you first approach astrophysics from a more historical and fundamental point of view. How did the representation of the universe evolve? How was the modern vision of "celestial mechanics" constructed? You will have the pleasure of discovering the answers to some of these questions. However, in order to go further in this course, we will also see Kepler's three laws as well as some basic notions about protoplanetary disks, planets or star formation. In this first module, we propose to lay the foundations necessary to deal with the concept that interests us all: exoplanets.
Name:Planet detection I
Description:In this second module we will focus on the detection of exoplanets. Together we will discover three methods for detecting extrasolar planets. (1) Radial velocities, which allowed the first detections of hot Jupiters. (2) Astrometry, a method that the Gaia satellite has greatly contributed to boosting. (3) Direct imaging, the only way to really see planetary companions. Don't be scared off by the mathematical approach used to describe these methods. A general understanding is sufficient to follow the next few weeks of the course.
Name:Planet detection II
Description:For this third module, we remain in planet detection. However, this time we will explore the specific case of a planet being seen nearly edge-on and transiting its star. The observation of exoplanet eclipses (transits and occultations) provides us with a wealth of parameters and is currently the most powerful technique to study the structure and other intrinsic properties of planets. In this module, you will therefore have the opportunity to discover mainly how to apply the transit method, but also, at the end of the module, the main outcomes that have been obtained through the use of the transit method.
Name:Statistical results I
Description:Now let's dive into statistics! In this module, we will be interested in the statistical properties of planetary systems. We have chosen to use a chronological approach to do so. First of all, you will discover the first results of the radial velocity programs which unveiled the great diversity of planetary systems. We will then compare these results with those obtained more recently by the transit surveys and the most recent radial velocity surveys. The statistical results of these research programs have brought to light a multiplicity of discoveries around exoplanets. You will have the pleasure of discovering them throughout this module.
Name:Statistical results II
Description:For this fifth module, let's continue our exploration of statistical methods! We will continue to discover the properties of the exoplanetary systems that have been detected so far. You will have the opportunity to understand the link between the properties of the planets and the mass of the central star. We will also see in more detail the dynamics of multiplanetary systems, how planet-planet interactions are translated and, in particular, what are the parameters that influence the stability of systems.
Name:Surfaces and atmospheres
Description:Let us leave now the statistical analyses to go and look at the properties of the surfaces and atmospheres of exoplanets. In the previous modules, we have seen that radial velocity measurements combined with transits observations allow us to have access to the average density of exoplanets. We could thus put some constraints on the internal structure of the objects. Although only a few very specific systems (young and massive planets with large separation) have been imaged so far, spectroscopic measurements and subtle strategies of observation of transiting and non-transiting systems allow us to know the characteristics of planetary surfaces and atmospheres. This is all we will see together for this penultimate module.
Name:Latest news from the exoplanetary atmospheres
Description:For this last part of the course, let's continue and complete our exploration of the atmospheres of exoplanets. This module is in fact an update of the course. It integrates the new insights obtained on exoplanet atmospheres since 2014 (date of the first edition of this MOOC). Actually, the content of these last videos is very close to what you would get if you were attending a review on the subject at a real scientific conference. We hope you will enjoy this journey through the different layers of the atmosphere of exoplanets!
In this MOOC, you will have the opportunity to practice several methods of detection and characterisation of exoplanets. You will discover their statistical properties and the current state of knowledge we have in this very recent field of research. You will also understand the limitations and biases of the different detection techniques. At the end of this MOOC, you will have a good general understanding of the methods of detection and characterisation of exoplanets and their atmosphere. You w
