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The orbital eccentricity distribution of planets orbiting M dwarfs

Ballard, Sarah; Sagear, Sheila

The orbital eccentricities of exoplanets orbiting M dwarf stars may significantly affect their habitability but are unknown. We extract this eccentricity distribution using a sample of transiting planets orbiting M dwarfs detected by NASA's Kepler Mission with stellar density measurements. We find planets in apparently single-transiting systems ar…

The evolution of hot Jupiters revealed by the age distribution of their host stars

Huang, Yang; Dong, Subo; Luo, A. -Li +11 more

Hot Jupiters are the first exoplanet population discovered around main-sequence stars. However, their origin and evolution remain puzzled. Using a sample with kinematic properties derived from large surveys (e.g., Gaia, LAMOST), we characterize the kinematic ages of stars hosting hot and warm/cold Jupiters, confirming the result of the previous st…