Modeling Stellar Jitter for the Detection of Earth-Mass Exoplanets via Precision Radial Velocity Measurements

Autor:	Granovsky, Samuel, Kitiashvili, Irina N., Wray, Alan
Rok vydání:	2022
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Earth and Planetary Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1017/S1743921322002861
Popis:	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. Comment: 4 pages, 4 figures, IAU Symposium 362
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2202.07087 Zobrazit plný text záznamu View this record from Arxiv