California Kepler Survey Archives - Astrobiology

A KDE plot of SPOCK Stability vs. Eccentricity for KOI-82 on the left and KOI-70 on the right. Color denotes the density of samples. The KDE is normalized with 1 being the highest density of points for the system and 0 being the lowest density of points for the system. A small range of possible eccentricities for a specific stability are denoted by a lighter colored area, while a large range of possible eccentricities for a specific stability are denoted by a darker colored area. As eccentricity increases, stability decreases. Note how there are two well constrained regions of stability and instability with a transition region between the two. The eccentricity that describes the location of this transition region, as marked by a SPOCK Stability of 50%, we called the ”characteristic” eccentricity of the system. -- astro-ph.EP

Exoplanets, -moons, -comets, Status Report, Stellar Cartography

From Stability to Instability: Characterizing the Eccentricities of Multi-planet Systems in the California Kepler Survey as a Means of Studying Stability

by Keith CowingJanuary 14, 2025January 14, 2025

Understanding the stability of exoplanet systems is crucial for constraining planetary formation and evolution theories.