A framework for the origin and deep cycles of volatiles in rocky exoplanets

R Dasgupta, D Pathak… - Reviews in Mineralogy …, 2024 - pubs.geoscienceworld.org
Since the first discovery of planets in another solar system of our galaxy in the early 90s and
the discovery of 51 Pegassi b, a Jovian-type planet around a Sun-like star in 1995 (Mayor …

Fleeting but Not Forgotten: The Imprint of Esca** Hydrogen Atmospheres on Super-Earth Interiors

JG Rogers, HE Schlichting… - The Astrophysical …, 2024 - iopscience.iop.org
Small, close-in exoplanets are divided into two subpopulations: super-Earths and sub-
Neptunes. Most super-Earths are thought to have lost their primordially accreted hydrogen …

Distinguishing oceans of water from magma on mini-Neptune K2-18b

O Shorttle, S Jordan, H Nicholls… - The Astrophysical …, 2024 - iopscience.iop.org
Mildly irradiated mini-Neptunes have densities potentially consistent with them hosting
substantial liquid-water oceans (" Hycean" planets). The presence of CO 2 and …

Tracing the origin of volatiles on Earth using nitrogen isotope ratios in iron meteorites

DS Grewal, S Bhattacharjee, GD Mardaru… - … et Cosmochimica Acta, 2025 - Elsevier
Understanding the relationships between the nitrogen (N) isotope ratios of early solar
system planetesimals and terrestrial reservoirs is crucial for tracing the origin of volatiles on …

Toward a Self-consistent Evaluation of Gas Dwarf Scenarios for Temperate Sub-Neptunes

FE Rigby, L Pica-Ciamarra, M Holmberg… - The Astrophysical …, 2024 - iopscience.iop.org
The recent JWST detections of carbon-bearing molecules in a habitable-zone sub-Neptune
have opened a new era in the study of low-mass exoplanets. The sub-Neptune regime …

Contribution of the Moon-forming Impactor to the Volatile Inventory in the Bulk Silicate Earth

DS Grewal, Y Miyazaki, NX Nie - The Planetary Science Journal, 2024 - iopscience.iop.org
The timing and mechanism by which the present-day inventory of life-essential volatiles
hydrogen–carbon–nitrogen–sulfur (H–C–N–S) in the bulk silicate Earth (BSE) was …

The Effect of Nitrogen on the Dihedral Angle Between Fe− Ni Melt and Ringwoodite: Implications for the Nitrogen Deficit in the Bulk Silicate Earth

K Tsuno, DS Grewal, V Xu, L Leinbach… - Geophysical …, 2024 - Wiley Online Library
Nitrogen (N) is extremely depleted in the bulk silicate Earth (BSE). However, whether the
silicate magma ocean was as N‐poor as the present‐day BSE is unknown. We performed …

Review of experimental and analytical techniques to determine H, C, N, and S solubility and metal–silicate partitioning during planetary differentiation

C Dalou, TA Suer, L Tissandier, WL Ofierska… - Progress in Earth and …, 2024 - Springer
During their formation, terrestrial planets underwent a magma ocean phase during which
their metallic cores segregated from their silicate mantles and their early atmospheres …

Convective shutdown in the atmospheres of lava worlds

H Nicholls, RT Pierrehumbert… - Monthly Notices of …, 2025 - academic.oup.com
Atmospheric energy transport is central to the cooling of primordial magma oceans.
Theoretical studies of atmospheres on lava planets have assumed that convection is the …

Devolatilization of extrasolar planetesimals by 60Fe and 26Al heating

JW Eatson, T Lichtenberg, RJ Parker… - Monthly Notices of the …, 2024 - academic.oup.com
Whilst the formation of Solar system planets is constrained by meteoritic evidence, the
geophysical history of low-mass exoplanets is much less clear. The bulk composition and …