TOI-1807 b Archives

Relative entropy shift applied by the Mazevet et al. (2019) correction (Eq. (17)) across the water phase diagram in plog10 T, log10 Pq space. The colormap is logarithmic between 10´3 and 10, with the upper bound saturating along a narrow ridge where the aqua baseline entropy nearly vanishes. Solid white lines mark the phase boundaries of the underlying aqua table; labels identify the fields of ices, liquid, vapor, and supercritical water. Dashed lime contours with inline labels mark the analytic gate w7 that selects where the patch is applied: w7“0 outside the patch (no shift) and w7“1 inside its core (full correction). The figure shows that the correction is concentrated in a localized strip of the supercritical regime between ice X and the Brown (2018) fluid, leaving the rest of the aqua table untouched. -- astro-ph.EP

Astrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Status Report

PALEOS: Multiphase Equations of State and Mass-Radius Relations for Exoplanet Interiors

by Keith CowingMay 7, 2026May 7, 2026

Modeling the interior of a rocky or water-rich exoplanet is a thermodynamic closure problem: every layer’s density, temperature gradient, and phase must follow from an equation of state (EoS) that […]

Stellar surface intensity map at 1083.31nm computed with PYSME in the case of HAT-P-11 b. The intensity map is relative to the integrated intensity over the stellar map at 1083.31nm. The grid contains 101x101 cells, and the planet’s trajectory is shown with a red solid line with black dots indicating the planet’s center at each observed phase. The planet solid disk is shown at a given phase, with the underlying stellar cells being excluded from the master spectrum computation. -- astro-ph.EP

Astrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

Probing Atmospheric Escape Through Metastable He I Triplet Lines In 15 Exoplanets Observed With SPIRou

by Keith CowingJune 14, 2024June 14, 2024

For several years, the metastable helium triplet line has been successfully used as a tracer to probe atmospheric escape in transiting exoplanets. This absorption in the near-infrared (1083.3 nm) can […]

TOI-1807 b

PALEOS: Multiphase Equations of State and Mass-Radius Relations for Exoplanet Interiors

Probing Atmospheric Escape Through Metastable He I Triplet Lines In 15 Exoplanets Observed With SPIRou

Dinosaur-killing Asteroid Also Created A Dust Cloud That Insulated Earth, Charbroiling Cretaceous Creatures

Current Water Trapping Micro-habitats On The Surface Of Mars

Methanotrophy Under Extreme Alkalinity In A Serpentinizing System

ANDES, The High-resolution Spectrograph Oof The ELT: Simulated Performance Of The CORO Module And Overview Of The High-contrast Capabilities For Exoplanet Observations

When Polymers Meet Primitive Membranes: How Molecular Cooperation May Have Helped Life Begin