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

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 da...

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Bibliographic Details
Published inProceedings of the International Astronomical Union Vol. 16; no. S362; pp. 169 - 172
Main Authors Granovsky, Samuel, Kitiashvili, Irina N., Wray, Alan A.
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.06.2020
Subjects
Astronomy
Data analysis
Doppler effect
Earth
Extrasolar planets
Planet detection
Poster Paper
Radial velocity
Spectroscopy
Three dimensional models
Time series
Velocity
stars: individual (HD121504)
techniques: radial velocities
methods: numerical
line: profiles
spectroscopic
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Summary: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 (G2V spectral type) 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.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921322002861