GJ 367 Archives

Magnetospheric convection timescale shows a positive correlation with the tidal heating rate. This suggests that exoplanets which are well-positioned for plasma torus construction will generally also receive the necessary tidal power to drive volcanism. This plot includes the 13 terrestrial exoplanets plotted in Figures 1 and 3 which had nonzero orbit eccentricities and orbited within their host stars’ Alfv´en radii, marked on all figures as “high-priority targets”. GJ 367 b is considered the highest priority target due to its high tidal heating power and long magnetospheric convection timescale. The values of τ presented here are the same as in Figure 3. Color indicates the V magnitude of the system which is indicative of favorability for UV-optical spectroscopy. -- astro-ph.EP

Astrochemistry, Astrogeology, Astronomy & Telescopes, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Io, Lava / magma ocean / Volcanic Worlds, Status Report

Constraining Ongoing Volcanic Outgassing Rates and Interior Compositions of Extrasolar Planets with Mass Measurements of Plasma Tori

by Keith CowingJune 12, 2025June 12, 2025

We present a novel method of constraining volcanic activity on extrasolar terrestrial worlds via characterization of circumstellar plasma tori.

HARPS RV time series of GJ 367 along with the best-fitting five-signal model (three planets + stellar rotation + long-period stellar signal). Data are shown as blue filled circles with their nominal uncertainties. The vertical gray lines mark the error bars including the RV jitter. -- astro-ph.EP)

Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report

Company for the ultra-high density, ultra-short period sub-Earth GJ 367 b: discovery of two additional low-mass planets at 11.5 and 34 days

by Keith CowingJuly 19, 2023July 19, 2023

GJ 367 is a bright (V ≈ 10.2) M1 V star that has been recently found to host a transiting ultra-short period sub-Earth on a 7.7 hr orbit. With the […]

GJ 367

Constraining Ongoing Volcanic Outgassing Rates and Interior Compositions of Extrasolar Planets with Mass Measurements of Plasma Tori

Company for the ultra-high density, ultra-short period sub-Earth GJ 367 b: discovery of two additional low-mass planets at 11.5 and 34 days

Tricorder Tech: Ground Truth For The DAVINCI Venus Mission

Mars Curiosity Rover Finds Evidence Of An Ancient Sandstorm

Pristine Meteorite Examination Adds To Our Knowledge Of Ancient Asteroids

NASA Study Finds Near-Earth Asteroid Is Actually Comet

NASA Awards STRIDE Contracts For Mars Advanced Surface Mobility Technology