9.8k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.8k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.3k papers
- European Organization for Nuclear ResearchCH2.3k papers
- ETH ZurichCH2.2k papers
- Rutherford Appleton LaboratoryGB2.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT2.1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT2.1k papers
- Imperial College LondonGB2.1k papers
- University of BristolGB2.1k papers
- University of Maryland, College ParkUS2.1k papers
- Massachusetts Institute of TechnologyUS2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di GenovaIT2k papers
256 papers · 1 filter
Coupling dynamical accretion and chemical differentiation: A unified framework for the diversity of Earth and Mars
Zhihui Kong, Beibei Liu, J. ZhangZhou +8
The physical and geochemical differences between Earth and Mars provide fundamental constraints on terrestrial planet formation, yet a self-consistent framework linking dynamical a…
A scaling relation for core heating by giant impacts and implications for dynamo onset
You Zhou, Peter E. Driscoll, Mingming Zhang +2
Accretional heating of Earth's interior during formation is pivotal to its subsequent thermal and chemical evolution. In particular, impact heating of Earth's core is expected, but…
Reassessing planetary composition: Evidence of rock-dominated envelopes in Uranus and Neptune
Vanesa Ramirez, Yamila Miguel, Saburo Howard
Although Uranus and Neptune are commonly classified as ice giants, their exact compositions remain poorly constrained. Recent studies of outer Solar System bodies challenge the tra…
Experimental evidence for granular shear-flow instability in the Epstein regime
Holly L. Capelo, Jean-David Bodénan, Martin Jutzi +7
Stability analysis of two-fluid protoplanetary disc models has enriched our understanding of how solids can grow into larger bodies called planetesimals. Dust particles entrained i…
Resizing the giants: How modelling adiabatic interiors impacts predicted planetary radii
Simon Müller, Ravit Helled
The interiors of giant planets are commonly assumed to be convective and adiabatic, making the adiabatic temperature gradient a key ingredient in interior and evolution models. Mul…
Smoothed Particle Hydrodynamics in pkdgrav3 for Shock Physics Simulations. II. Shear Strength
Thomas Meier, Christian Reinhardt, Martin Jutzi +2
Material strength effects have been recently shown to be significant in giant impacts even at scales of planetary collisions. Despite this, their effects are often neglected in num…
Towards an agnostic algorithm for sampling empirical structure models: The case of Uranus and Neptune
Stefano Wirth, Luca Morf, Ravit Helled
We present an algorithm to efficiently sample the full space of planetary interior density profiles. Our approach uses as few assumptions as possible to pursue an agnostic algorith…
Further constraints on Jupiter's primordial structure
Henrik Knierim, Konstantin Batygin, Ravit Helled +2
The primordial structure of Jupiter remains uncertain, yet it holds vital clues on the planet's formation and early evolution. Recent work used dynamical constraints from Jupiter's…
Stellar chemistry and planet size: insights from GALAH DR4
N. Sussholz, S. Zucker, R. Helled +1
The well-known correlation between stellar metallicity and planet occurrence is strongest for giant planets, but weaker for smaller planets, suggesting that detailed elemental patt…
Smoothed Particle Hydrodynamics in pkdgrav3 for Shock Physics Simulations. I. Hydrodynamics
Thomas Meier, Douglas Potter, Christian Reinhardt +1
We present pkdgrav3, a high-performance, fully parallel tree-SPH code designed for large-scale hydrodynamic simulations including self-gravity. Building upon the long development h…
Icy or rocky? Convective or stable? New interior models of Uranus and Neptune
Luca Morf, Ravit Helled
We present a new framework for constructing agnostic and yet physical models for planetary interiors and apply it to Uranus and Neptune. Unlike previous research that either impose…
DIPSY: A new Disc Instability Population SYnthesis, II. The Populations of Companions Formed Through Disc Instability
O. Schib, C. Mordasini, A. Emsenhuber +1
We applied the global end-to-end model described in Paper~I of this series to perform a population synthesis of companions formed via disc instability (DI). By using initial condit…
DIPSY: A new Disc Instability Population SYnthesis, I. Modeling, evolution of individual systems, and tests
O. Schib, C. Mordasini, A. Emsenhuber +1
Disc instability (DI) is a model aimed at explaining the formation of companions through the fragmentation of the circumstellar gas disc. Furthermore, DI could explain the formatio…
How Internal Structure Shapes the Metallicity of Giant Exoplanets
Lorenzo Peerani, Saburo Howard, Ravit Helled
The composition and internal structure of gas giant exoplanets encode key information about their formation and evolution. We investigate how different assumed interior structures…
Direct Measurement of Extinction in a Planet-Hosting Gap
G. Cugno, S. Facchini, F. Alarcon +12
Recent disk observations have revealed multiple indirect signatures of forming gas giant planets, but high-contrast imaging has rarely confirmed the presence of the suspected pertu…
Detection and characterisation of a 106-day transiting Jupiter : TOI-2449 b / NGTS-36 b
S. Ulmer-Moll, S. Gill, R. Brahm +64
Only a handful of transiting giant exoplanets with orbital periods longer than 100 days are known. These warm exoplanets are valuable objects as their radius and mass can be measur…
The Evolution and Internal Structure of Neptunes and Sub-Neptunes: The importance of thermal conductivity in non-convective regions
Mark Eberlein, Ravit Helled
Neptunes and sub-Neptunes are typically modeled under the assumption that the interior is adiabatic and consists of distinct layers. However, formation models indicate that composi…
Sub-Neptunes Are Drier Than They Seem: Rethinking the Origins of Water-Rich Worlds
Aaron Werlen, Caroline Dorn, Remo Burn +3
Recent claims of biosignature gases in sub-Neptune atmospheres have renewed interest in water-rich sub-Neptunes with surface oceans, often referred to as Hycean planets. These plan…
The possibility of a giant impact on Venus
Mirco Bussmann, Christian Reinhardt, Cedric Gillmann +4
Giant impacts were common in the early evolution of the Solar System, and it is possible that Venus also experienced an impact. A giant impact on Venus could have affected its rota…
JWST/MIRI observations of the young TWA 27 system: hydrocarbon disk chemistry, silicate clouds, evidence for a CPD
P. Patapis, M. Morales-Calderón, A. M. Arabhavi +39
The Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) enables the characterisation of young self-luminous gas giants at previously inaccessible wavelengths, r…
The Possibility of Hydrogen-Water Demixing in Uranus, Neptune, K2-18b and TOI-270d
Saburo Howard, Ravit Helled, Armin Bergermann +1
The internal structures of Uranus and Neptune remain unknown. In addition, sub-Neptunes are now thought to be the most common type of exoplanets. Understanding the physical process…
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)
Colin Orion Chandler, Pedro H. Bernardinelli, Mario Jurić +305
We report on the observation and measurement of astrometry, photometry, morphology, and activityof the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-…
Giant planet formation via pebble accretion across different stellar masses
Sho Shibata, Ravit Helled
The occurrence rate of cold Jupiters was found to depend on stellar mass. The formation environment in the protoplanetary disks regulates core formation and the subsequent gas accr…
Unraveling the origin of giant exoplanets: Observational implications of convective mixing
Henrik Knierim, Ravit Helled
The connection between the atmospheric composition of giant planets and their origin remains elusive. In this study, we explore how convective mixing can link the primordial planet…