TOI-1130 b Archives

Transmission spectrum of TOI-1130b with the best-fit free chemistry, equilibrium chemistry and grid model overplotted (left) and comparison between retrieved abundances from the three model fits for TOI-1130b (right). The points shown on the right panel are the best fit mass fractions from the free retrieval. The H2O and CO2 posterior distributions shows a lower limit, where as the other molecules show gaussian distributions. Therefore H2O and CO2 data points are shown with upper arrows. The solid lines show chemical abundance profiles from equilibrium chemistry and the dashed lines show the chemical profiles from the self-consistent forward model grid. -- astro-ph.EP

Astrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Status Report

JWST Unveils A High Mean Molecular Weight Atmosphere For Mini-Neptune TOI-1130b: Evidence For Formation Beyond The Water Ice Line

by Keith CowingMay 6, 2026May 6, 2026

We present the combined JWST/NIRSpec G395H and NIRISS SOSS transmission spectrum of a warm mini-Neptune, TOI-1130b (3.66 R⊕, 19.8 M⊕, Teq∼825 K). It is part of a rare and unique […]

The planetary odd couple of a mini-Neptune and hot Jupiter probably formed out beyond its star’s “frostline,” in the colder region of the system’s early protoplanetary disk. Credit Jose-Luis Olivares, MIT

Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Press Release

Astronomers Pin Down The Origins Of A Planetary Odd Couple

by Keith CowingMay 6, 2026May 6, 2026

Across the Milky Way galaxy, a planetary odd couple is circling a star some 190 light years from Earth. A normally “lonely” hot Jupiter is sharing space with a mini-Neptune, […]

TOI-1130 b

JWST Unveils A High Mean Molecular Weight Atmosphere For Mini-Neptune TOI-1130b: Evidence For Formation Beyond The Water Ice Line

Astronomers Pin Down The Origins Of A Planetary Odd Couple

Preparing ExoMars For Rosalind Franklin Astrobiology Rover Delivery

Joint Dynamical-geophysical Evidence For A Limit Cycle In The Galilean Moons

JWST Transmission Spectroscopy Of TOI-3235 b: Challenges In Constraining Giant Planet Atmospheres Around M Dwarfs Amid Stellar Contamination

Searching For Habitable Exoplanets With Relative Astrometry (SHERA). I. The Case For Searching For Planets In Binary Star Systems

Callisto From JWST: CO2-rich Terrain On The Leading Hemisphere And Global Patterns Of H2O Ice