English
Related papers

Related papers: Forming chondrules in impact splashes. I. Radiativ…

200 papers

Brown dwarfs and exoplanets provide unique atmospheric regimes that hold information about their formation routes and evolutionary states. Modelling mineral cloud particle formation is key to prepare for missions and instruments like…

Earth and Planetary Astrophysics · Physics 2022-07-13 Dominic Samra , Christiane Helling , Tilman Birnstiel

Recent observations suggest galaxies may ubiquitously host a molecular component to their multiphase circumgalactic medium (CGM). However, the structure and kinematics of the molecular CGM remains understudied theoretically and largely…

Astrophysics of Galaxies · Physics 2023-08-16 Ryan Jeffrey Farber , Max Gronke

Different from Milky-Way-like galaxies, discs of gas-rich galaxies are clumpy. It is believed that the clumps form because of gravitational instability. However, a necessary condition for gravitational instability to develop is that the…

Astrophysics of Galaxies · Physics 2017-08-30 Guang-Xing Li

Oxygen isotope compositions of chondrules reflect the environment of chondrule formation and its spatial and temporal variations. Here, we present a theoretical model of oxygen isotope exchange reaction between molten silicate spherules and…

Earth and Planetary Astrophysics · Physics 2023-07-26 Sota Arakawa , Daiki Yamamoto , Takayuki Ushikubo , Hiroaki Kaneko , Hidekazu Tanaka , Shigenobu Hirose , Taishi Nakamoto

Star formation is intimately linked to the dynamical evolution of molecular clouds. Turbulent fragmentation determines where and when protostellar cores form, and how they contract and grow in mass via accretion from the surrounding cloud…

Astrophysics · Physics 2007-05-23 Ralf Klessen

The curious occurrence of perfectly spherical particles when a steel substrate is slid against a hard abrasive was first observed and documented by Robert Hooke in the 17$^{th}$ century. Similar particles have subsequently been observed in…

Soft Condensed Matter · Physics 2023-05-03 Harish Singh Dhami , Priti Ranjan Panda , Koushik Viswanathan

Subsequent to Paper I, the evolution and fragmentation of a rotating magnetized cloud are studied with use of three-dimensional MHD nested-grid simulations. After the isothermal runaway collapse, an adiabatic gas forms a protostellar first…

Astrophysics · Physics 2009-11-13 Masahiro N Machida , Tomoaki Matsumoto , Tomoyuki Hanawa , Kohji Tomisaka

We investigate the operation of the chemothermal instability in primordial star-forming clouds with a suite of three-dimensional, moving-mesh simulations. In line with previous studies, we find that the gas at the centre of high-redshift…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Thomas H. Greif , Volker Springel , Volker Bromm

The expansion and collision of two wind-blown superbubbles is investigated numerically. Our models go beyond previous simulations of molecular cloud formation from converging gas flows by exploring this process with realistic flow…

Astrophysics of Galaxies · Physics 2015-05-20 Evangelia Ntormousi , Andreas Burkert , Katharina Fierlinger , Fabian Heitsch

Drying of colloidal dispersion and their consolidation into a particulate deposit is a common phenomenon. This process involves various physical processes such as diffusion of liquid molecules into the ambient atmosphere and advection of…

Soft Condensed Matter · Physics 2020-12-01 Hisay Lama , Ranajit Mondal

We use high-resolution three-dimensional adaptive mesh refinement simulations to investigate the interaction of high-redshift galaxy outflows with low-mass virialized clouds of primordial composition. While atomic cooling allows star…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-24 William J Gray , Evan Scannapieco

It has been suggested that star-forming galaxies may host a substantial, dark reservoir of gas in the form of planetary-mass molecular clouds that are so cold that $\text{H}_{2}$ can condense. Here we investigate the process of tidal…

Astrophysics of Galaxies · Physics 2025-04-01 Arthur G. Suvorov , Mark A. Walker

After impact onto a smooth dry surface, a drop of viscous liquid initially spreads in the form of a thick lamella. If the drop splashes, it first emits a thin fluid sheet that can ultimately break up into droplets causing the splash.…

Fluid Dynamics · Physics 2015-05-19 Michelle M. Driscoll , Cacey S. Stevens , Sidney R. Nagel

During their formation, nascent planetary systems are subject to FU Orionis outbursts that heat a substantial part of the disc. This causes water ice in the affected part of the disc to sublimate as the ice line moves outwards to several to…

Earth and Planetary Astrophysics · Physics 2024-06-19 Katrin Ros , Anders Johansen

We study the generation of large-scale vortices in rotating turbulent convection by means of Cartesian direct numerical simulations. We find that for sufficiently rapid rotation, cyclonic structures on a scale large in comparison to that of…

Solar and Stellar Astrophysics · Physics 2013-11-19 P. J. Käpylä , M. J. Mantere , T. Hackman

Volatility-dependent fractionation of the rock-forming elements at high temperatures is an early, widespread process during formation of the earliest solids in protoplanetary disks. Equilibrium condensation calculations allow prediction of…

Earth and Planetary Astrophysics · Physics 2023-06-28 Denton S. Ebel

Cool a piece of the Sun to 1000 K at one millibar pressure to yield a mineral assemblage consistent with those found in the most primitive meteorites. This is an equilibrium or fractional condensation experiment simulated by calculations…

Earth and Planetary Astrophysics · Physics 2023-06-28 Denton S. Ebel

We present an analytic description of the spherically symmetric gravitational collapse of radiatively cooling gas clouds, which illustrates the mechanism by which radiative cooling induces gravitational instability at a characteristic mass…

Astrophysics of Galaxies · Physics 2025-01-03 James Gurian , Boyuan Liu , Donghui Jeong , Takashi Hosokawa , Shingo Hirano , Naoki Yoshida

Here we examine the evolution of irradiated clouds using the Smoothed Particle Hydrodynamics ({\small SPH}) algorithm coupled with a ray-tracing scheme that calculates the position of the ionisation-front at each timestep. We present…

Astrophysics of Galaxies · Physics 2015-06-11 S. Anathpindika , H. C. Bhatt

Using 3D MHD simulation with the effects of radiative cooling/heating, chemical reactions, and thermal conduction, we investigate the formation of molecular cloud in the ISM. We consider the formation of molecular cloud by accretion of the…

Astrophysics of Galaxies · Physics 2015-06-05 Tsuyoshi Inoue , Shu-ichiro Inutsuka