GJ 2126 b: A highly eccentric Jovian exoplanet
Arbel Schorr, Avraham Binnenfeld, and Shay Zucker
TL;DR
This paper reports the discovery of GJ 2126 b, a highly eccentric Jupiter-like exoplanet with a 272.7-day orbit, using radial velocity measurements, contributing to understanding planetary formation and eccentricity distribution.
Contribution
It presents the detection and characterization of a highly eccentric Jovian exoplanet orbiting a low-mass star, expanding the known diversity of exoplanet orbits.
Findings
GJ 2126 b has an eccentricity of 0.85.
The planet orbits its star every 272.7 days.
It is among the most eccentric exoplanets discovered.
Abstract
We report the discovery of GJ 2126 b, a highly eccentric (e = 0.85) Jupiter-like planet orbiting its host star every 272.7 days. The planet was detected and characterized using 112 radial velocity (RV) measurements from HARPS (High Accuracy Radial Velocity Planet Searcher), provided by HARPS-RVBank. This planet orbits a low-mass star and ranks among the most eccentric exoplanets discovered, placing it in a unique region of the parameter space of the known exoplanet population. This makes it a valuable addition to the exoplanet demographics, helping to refine our understanding of planetary formation and evolution theories.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Astrophysics and Star Formation Studies