Using MIRI (Mid Infrared Instrument) on board the James Webb Space Telescope (JWST), a team of researchers led by former MPIA (Max Planck Institute for Astronomy, Heidelberg, Germany) PhD student […]
LHS 3844 b
![The measured planet-to-star flux ratio as a function of wavelength compared to a range of solid slab surfaces. The observations were taken using Spitzer (blue square-shaped marker) and JWST (red circle-shaped markers). The error bars on the data are 1σ. A selection of models, taken from Ref. [12], represent solid slab surfaces with varying compositions. Solid orange line: an ultramafic, olivine clinopyroxenite EG-19-63 sample (∼ 47 wt% SiO2) recovered from Emigrant Gap, California, USA, which shows good agreement with the observations. Dashed blue line: a mafic, basaltic sample from the 1919 Kilauea eruption in Hawaii, USA (∼ 51 wt% SiO2) that is also consistent with the data. Dashed, dotted green line: a felsic sample representing the highest SiO2 content model (∼ 73 wt% SiO2) published in Ref. [12]. The legend lists the rejection significances of these models. With a solid black line, we also show a 1000 K black body curve for the planet, which is the best fit value using the combined Spitzer and JWST dataset. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/05/The-dark-and-featureless.png?resize=1200%2C721&ssl=1)
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Interstellar, Mapping, Geodesy, Cartography, Bathymetry, Status Report
The Dark And Featureless Surface Of Rocky Exoplanet LHS 3844 b From JWST Mid-infrared Spectroscopy
JWST has opened a new era in the study of rocky exoplanets, enabling direct characterization of their surfaces with mid-infrared spectroscopy. Different types of rock have distinct spectral features that […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Icy Worlds, Status Report
Weighing The Mass Of LHS 3844 b
Context: LHS 3844 b (TOI-136 b) is a ultra short-period, Earth-size exoplanet detected by TESS. It is one of the most favourable object for atmospheric characterisation and the study of […]