An improved quantification of HD 147379 b
Fabo Feng, Hugh R. A. Jones, Mikko Tuomi
TL;DR
This paper reanalyzes radial velocity data for HD 147379, confirming the exoplanet's existence and improving parameter estimates by modeling red noise, highlighting the importance of noise modeling in RV data analysis.
Contribution
It introduces an improved method for quantifying HD 147379 b by combining multiple datasets and advanced noise modeling techniques.
Findings
HD 147379 b confirmed with improved parameters
CARMENES data dominated by red noise
Benchmark case for RV data analysis
Abstract
We reanalyze the CARMENES and HIRES/KECK radial velocity data for HD 147379, and also analyze the SOPHIE data using the Agatha software in combination with MCMC posterior sampling. The analysis confirms the existence of HD 147379 b and improves the parameter estimation through modeling of red noise. The multiple radial velocity data sets for HD147379 provide a benchmark case for RV data analyses. Based on our analysis of the HD 147379 data, CARMENES radial velocity data is dominated by red noise and thus need to incorporate a red noise model.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomical Observations and Instrumentation · Adaptive optics and wavefront sensing