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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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230 papers · 1 filter
Virial-based extraction of structures in numerical simulations: The vibes tool
Simon Chevalier, Fabien Louvet, Yann Bernard +9
The processes that determine the stellar initial mass function (IMF) and its connection to the core mass function (CMF) are among the major open questions in star formation. The de…
Lithium-rich M-dwarfs at the ZAMS: Evidence for planetary engulfment?
R. D. Jeffries, R. J. Jackson, I. Baraffe
We identify 6 early M-dwarfs, in 3 open clusters (NGC 2451a, Blanco 1 and NGC 2516) at ages of 50-200 Myr, that are anomalously enriched in lithium compared with Li-depleted siblin…
Numerical Insights into Disk Accretion, Eccentricity, and Kinematics in the Class 0 phase
Adnan Ali Ahmad, Benoît Commerçon, Elliot Lynch +4
The formation and early evolution of protoplanetary disks are governed by a wide variety of physical processes during a gravitational collapse. Observations have begun probing disk…
Turn up the light: Radiative efficiency of protostars at birth
Asmita Bhandare, Adnan Ali Ahmad, Benoît Commerçon
Early stages of stellar birth comprise of a two-step process involving the formation of two hydrostatic cores. The second step of gravitational collapse sets the radiative efficien…
Discovery of the pre-main-sequence eclipsing binary MML 48
Y. Gómez Maqueo Chew, L. Hebb, H. C. Stempels +12
We present the discovery of the eclipsing binary MML 48, which is a member of Upper Centaurus Lupus, has an associated age of 16 Myr, and is composed of two young, low-mass stars.…
Convective shells in the interior of Cepheid variable stars: overshooting models based on hydrodynamic simulations
Maxime Stuck, Jane Pratt, Isabelle Baraffe +5
Because Cepheid variable stars have long been used as a cosmic benchmark, the accuracy of stellar evolution models for Cepheids have wide-reaching effects. Our goal is to provide a…
Birth of magnetized low-mass protostars and circumstellar disks
Adnan Ali Ahmad, Matthias González, Patrick Hennebelle +2
Although protostars and disks are often studied separately owing to numerical and observational challenges, breakthroughs in recent years have highlighted the need to study both ob…
Mixing by Internal Gravity Waves in Stars: Assessing Numerical Simulations Against Theory
Jack Morton, Thomas Guillet, Isabelle Baraffe +5
Here we present a study of radial chemical mixing in non-rotating massive main-sequence stars driven by internal gravity waves (IGWs), based on multi-dimensional hydrodynamical sim…
High-temperature dust formation in carbon-rich astrophysical environments
Guy Libourel, Marwane Mokhtari, Vandad-Julien Rohani +7
Condensation processes, which are responsible for the main chemical differences between gas and solids in the Galaxy, are the major mechanisms that control the cycle of dust from e…
The shape of convection in 2D and 3D global simulations of stellar interiors
M. -G. Dethero, J. Pratt, D. G. Vlaykov +5
Theoretical descriptions of convective overshooting often rely on a one-dimensional parameterization of the flow called the filling factor for convection. Several definitions of th…
Discs are born eccentric
Benoit Commerçon, Francesco Lovascio, Elliot Lynch +1
Recent observations have begun probing the early phases of disc formation, but little data yet exists on disc structure and morphology of Class 0 objects. Using simulations, we are…
A combined study of thermohaline mixing and envelope overshooting with PARSEC: Calibration to NGC 6397 and M4
C. T. Nguyen, A. Bressan, A. J. Korn +7
Thermohaline mixing is one of the main processes in low-mass red giant stars that affect the transport of chemicals and, thus, the surface abundances along the evolution. The inter…
Effects of stratification on overshooting and waves atop the convective core of main-sequence stars
Adrien Morison, Arthur Le Saux, Isabelle Baraffe +5
As a massive star evolves along the main sequence, its core contracts, leaving behind a stable stratification in helium. We simulate 2D convection in the core at three different st…
He-enriched STAREVOL models for globular cluster multiple populations. Self-consistent isochrones from ZAMS to the TP-AGB phase
G. Costa, T. Dumont, A. Lançon +11
A common property of globular clusters (GC) is to host multiple populations characterized by peculiar chemical abundances. Recent photometric studies suggest that the He content co…
Mixing is easy: New insights for cosmochemical evolution from pre-stellar core collapse
Asmita Bhandare, Benoît Commerçon, Guillaume Laibe +5
Signposts of early planet formation are ubiquitous in substructured young discs. Dense, hot and high-pressure regions formed during gravitational collapse process, integral to star…
Formation of low mass protostars and their circumstellar disks
Adnan Ali Ahmad, Matthias González, Patrick Hennebelle +1
The birth process of circumstellar disks remains poorly constrained due to observational and numerical challenges. Recent numerical works have shown that the small-scale physics, o…
The Impact of the Third Dredge-up and Mass Loss in Shaping the Initial-Final Mass Relation of White Dwarfs
Francesco Addari, Paola Marigo, Alessandro Bressan +3
The initial-final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star's initial mass to the mass of the resulting white dwa…
The birth and early evolution of a low mass protostar
Adnan Ali Ahmad, Matthias González, Patrick Hennebelle +1
Understanding the collapse of dense molecular cloud cores to stellar densities and the subsequent evolution of the protostar is of importance to model the feedback effects such an…
High-resolution [O I] line spectral mapping of TW Hya supportive of a magnetothermal wind
Min Fang, Lile Wang, Gregory J. Herczeg +6
Disk winds are thought to play a critical role in the evolution and dispersal of protoplanetary disks. A primary diagnostic of this physics is emission from the wind, especially in…
Two-dimensional simulations of internal gravity waves in a 5 Zero-Age-Main-Sequence model
A. Le Saux, I. Baraffe, T. Guillet +5
Main-sequence intermediate-mass stars present a radiative envelope that supports internal gravity waves (IGWs). Excited at the boundary with the convective core, IGWs propagate tow…
The role of magnetic fields in the formation of multiple massive stars
R. Mignon-Risse, M. González, B. Commerçon
(Abridged) Context. Most massive stars are located in multiple stellar systems. Magnetic fields are believed to be essential in the accretion and ejection processes around single m…
Disk fragmentation around a massive protostar: a comparison of two three-dimensional codes
Raphaël Mignon-Risse, André Oliva, Matthias González +2
(Abridged) Most massive stars are located in multiple systems. The modeling of disk fragmentation, a possible mechanism leading to stellar multiplicity, relies on parallel 3D simul…
A study of convective core overshooting as a function of stellar mass based on two-dimensional hydrodynamical simulations
I. Baraffe, J. Clarke, A. Morison +6
We perform two-dimensional numerical simulations of core convection for zero-age-main-sequence stars covering a mass range from 3 to 20 . The simulations are per…
Impact of a new H/He equation of state on the evolution of massive brown dwarfs. New determination of the hydrogen burning limit
G. Chabrier, I. Baraffe, M. Phillips +1
We have explored the impact of the latest equation of state (EOS) for dense hydrogen-helium mixtures (Chabrier \& Debras 2021), which takes into account the interactions between hy…