[astro-ph.IM] Moons orbiting exoplanets (exomoons) can be detected through the reflex motion they impart to their host planet, which is recoverable in relative star-planet astrometric time series.
astronomy
Posted inExoplanets, -moons, -comets
The Mid-Infrared Transmission Spectrum of the Temperate Sub-Neptune TOI-270 d
[astro-ph.EP] Observations of temperate sub-Neptunes with JWST have ushered in a new era for atmospheric characterization of small exoplanets.
Posted inExoplanets, -moons, -comets
CARMApy: An Open-Source Python Framework for Simulating Microphysical Clouds in Planetary Atmospheres
[astro-ph.EP] CARMApy is a new open-source python code that performs bin-scheme microphysical modeling of clouds in exoplanet atmospheres.
Posted inComets and Asteroids
Older Than The Sun: Astronomers Find New Clues To The Origin Of Interstellar Comet 3I/ATLAS
[ESO] Astronomers have used the European Southern Observatory’s Very Large Telescope (ESO’s VLT) to study the composition of 3I/ATLAS, the brightest interstellar object ever seen, in detail.
Posted inAstrochemistry
MINDS: Complementary Inclinations In The Binary Ssystem HK Tau Reveal Gas- And Ice-phase Chemistry
[astro-ph.EP] HK Tau is a roughly equal mass pre-main sequence binary system consisting of a low-inclination primary (57 deg) and an edge-on (83 deg) secondary. We present JWST/MIRI observations targeting […]
![Abundance trends of [X/Fe] versus [Fe/H]. The data points have been colour-coded by the estimated ages of the stars. The red and blue lines mark the smoothed running mean for stars that have ages greater than 9.5 Gyr, and less than 9.5 Gyr, respectively. -- astro-ph.GA](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Exploring-the-Milky.png?resize=1200%2C711&ssl=1)
Posted inAstrochemistry
Exploring The Milky Way Stellar Disk. Carbon, Nitrogen, Oxygen, Sulphur, Potassium, and Copper Abundances For 714 F and G dwarf Stars In The Solar Neighbourhood
[astro-ph.GA] We aim to determine abundances of carbon, nitrogen, sulphur, potassium, and copper for 714 nearby F and G dwarf and subgiant stars, and to re-derive oxygen abundances using updated […]
Posted inAstronomy & Telescopes
Thousands Of Planets Are Hidden In This Photo
[ESA] Three years since launch, ESA’s Euclid space telescope reveals the Milky Way galaxy’s centre in extraordinary detail: a mosaic of tens of millions of stars captured in just 26 […]
Posted inExoplanets, -moons, -comets
How A Giant Planet Survived Its Star’s Death
[Northwestern University] When astronomers discovered a giant planet orbiting a dead star in 2020, they wondered how it survived its star’s violent demise. Now, observations from NASA’s James Webb Space […]
Posted inExoplanets, -moons, -comets
Improving Exoplanet Mass Characterisation With Bayesian Model Selection Using The Learned Harmonic Mean Estimator
[astro-ph.EP] Radial velocity (RV) analyses require modelling choices (such as eccentricity treatment, noise model, velocity trends, and number of planets) that can significantly affect derived planetary masses.
![Kiel diagram for 290 stars with 5000 K ≤ Teff ≤ 6500 K and log g ≥ 4.0 dex analyzed in this work. The dashed black lines present the solar values obtained for the Ceres 2009-02-08 solar spectrum, Teff = 5759±18 K, log g = 4.43±0.05 dex and [Fe/H] = 0.00±0.01 dex. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Chemical-Abundances.png?resize=1200%2C720&ssl=1)
Posted inAstrochemistry
Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements
[astro-ph.EP] We determined atmospheric and evolutionary parameters, along with chemical abundances of C, O, S, Fe, and Ni for 290 solar-type exoplanet hosting stars using high-resolution HARPS-North and HARPS-South spectra, […]