Research related to detection of exo-Earth by Terra Hunting Experiment

在过去的二十年里，我们已经获得了关于行星系统的结构和发生的丰富知识。尽管取得了巨大的成功，但迄今为止还没有发现地球的“孪生兄弟”。探测地球孪生状态的挑战显然与达到足够精度的技术困难有关。为了取得进展，我们正在艾萨克·牛顿望远镜（INT）上安装一个配备了最先进精密光谱仪（HARPS-3）的完全专用设备。为了达到实验目标，需要在探测器标定、径向速度分析和恒星噪声校正等方面取得新的进展。博士生的第一项工作将首先建立一个校准台来测量其详细的几何结构。然后，他的工作将转向数据解释，恒星校正和目标选择的准备工作。此外，仪器的第一盏灯预计在不到3年的时间内，为博士生提供了一个积极参与调试和早期科学成果的机会。

In the past two decades we have acquired a wealth of knowledge about the structure and the occurrence of planetary systems. Despite this large success, no Earth "twin" has yet been detected. The challenge in exploring Earth-twin regime is obviously related to the technical difficulty to reach the adequate precision. To make progress we are installing a fully dedicated facility equipped with a state-of-the art precise spectrograph (HARPS-3) on the Isaac Newton telescope (INT). To reach the goal of the experiment, new developments are needed on detector calibration, analysis of the radial velocity and correction of the stellar noise. The first work of the PhD student will be first to setup a calibration bench to measure its detailed geometric structure. Then his work will be directed towards preparatory work about data interpretation , stellar correction and target selection. In addition the first light of the instrument is expected in less than 3 years, providing a chance to the PhD student to take an active part in the commissioning and early science results.