论文标题
通过精确的径向速度测量值对恒星抖动进行检测
Modeling Stellar Jitter for the Detection of Earth-Mass Exoplanets via Precision Radial Velocity Measurements
论文作者
论文摘要
地球大小系外行星的检测是技术和数据分析挑战。从极端精确的径向速度测量的发展中，预期地球质量系外行星的未来进展。径向速度的提高精度需要开发一种新的基于物理的数据分析方法，以将行星信号与宿主明星相关的效果区分开来，从而考虑到出色的变异性和工具性不确定性。在这项工作中，我们从使用恒星盒代码获得的3D辐射建模中调查并量化行星托管太阳能型星HD121504的恒星干扰。该模型已用于确定湍流血浆的统计特性，并在恒星磁盘上的不同位置获得几条Fe I线的合成光谱观测，以模拟高分辨率的光谱观测。
The detection of Earth-size exoplanets is a technological and data analysis challenge. Future progress in Earth-mass exoplanet detection is expected from the development of extreme precision radial velocity measurements. Increasing radial velocity precision requires developing a new physics-based data analysis methodology to discriminate planetary signals from host-star-related effects, taking stellar variability and instrumental uncertainties into account. In this work, we investigate and quantify stellar disturbances of the planet-hosting solar-type star HD121504 from 3D radiative modeling obtained with the StellarBox code. The model has been used for determining statistical properties of the turbulent plasma and obtaining synthetic spectroscopic observations for several Fe I lines at different locations on the stellar disk to mimic high-resolution spectroscopic observations.
