The L 98-59 system, identified by TESS in 2019, features three transiting exoplanets in compact orbits of 2.253, 3.691, and 7.451 days around an M3V star, with an outer 12.83-day […]
L 98-59 c
Posted inAstrogeology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Status Report
Self-limited Tidal Heating And Prolonged Magma Oceans In The L 98-59 System
Rocky exoplanets accessible to characterisation often lie on close-in orbits where tidal heating within their interiors is significant, with the L 98-59 planetary system being a prime example.
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
JWST COMPASS: The 3-5 Micron Transmission Spectrum of the Super-Earth L 98-59 c
We present a JWST NIRSpec transmission spectrum of the super-Earth exoplanet L 98-59 c. This small (Rp=1.385±0.085R⊕, Mp=2.22±0.26R⊕), warm (Teq=553K) planet resides in a multi-planet system around a nearby, bright […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Status Report
Atmospheric Escape From Three Terrestrial Planets In The L 98-59 System
A critically important process affecting the climate evolution and potential habitability of an exoplanet is atmospheric escape, in which high-energy radiation from a star drives the escape of hydrogen atoms […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Transmission Spectrum Of The Potentially Rocky Planet L 98-59 c
We present observations of the 1.35+/-0.07 Earth-radius planet L 98-59 c using Wide Field Camera~3 on the Hubble Space Telescope. L 98-59 is a nearby (10.6 pc), bright (H=7.4 mag), […]