414 citations · 6.2k across the 93 of their papers we have counts for
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Formation of filaments and feathers in disc galaxies: Is self-gravity enough?
Raghav Arora, Christoph Federrath, Mark Krumholz +1
Context. Dense filaments/feathers are kpc-scale dusty features present in nearby main sequence galaxies. Distinct from the spiral arms, filaments constitute a major portion of dens…
The role of magnetic fields in disc galaxies: spiral arm instability
Raghav Arora, Christoph Federrath, Robi Banerjee +1
Context. Regularly-spaced, star-forming regions along the spiral arms of nearby galaxies provide insight into the early stages and initial conditions of star formation. The regular…
Global dynamics of the interstellar medium in magnetised disc galaxies
Bastian Körtgen, Robi Banerjee, Ralph E. Pudritz +1
Magnetic fields are an elemental part of the interstellar medium in galaxies. However, their impact on gas dynamics and star formation in galaxies remains controversial. We use a s…
Structure and Expansion Law of HII Regions in structured Molecular Clouds
Manuel Zamora-Avilés, Enrique Vázquez-Semadeni, Ricardo F. González +6
We present radiation-magnetohydrodynamic simulations aimed at studying evolutionary properties of H\,{\normalsize II} regions in turbulent, magnetised, and collapsing molecular clo…
On the shape and completeness of the column density probability distribution function of molecular clouds
Bastian Körtgen, Christoph Federrath, Robi Banerjee
Both observational and theoretical research over the past decade has demonstrated that the probability distribution function (PDF) of the gas density in turbulent molecular clouds…
The Origin of Filamentary Star Forming Clouds in Magnetised Galaxies
Bastian Körtgen, Robi Banerjee, Ralph E. Pudritz +1
Observations show that galaxies and their interstellar media are pervaded by strong magnetic fields with energies in the diffuse component being at least comparable to the thermal…
Fast deuterium fractionation in magnetized and turbulent filaments
Bastian Körtgen, Stefano Bovino, Dominik R. G. Schleicher +4
Deuterium fractionation is considered as an important process to infer the chemical ages of prestellar cores in filaments. We present here the first magneto-hydrodynamical simulati…
Astrochemistry: From primordial gas to present-day clouds
Dominik R. G. Schleicher, Stefano Bovino, Bastian Körtgen +2
Astrochemistry plays a central role during the process of star formation, both in the primordial regime as well as in the present-day Universe. We revisit here the chemistry in bot…
The driving of turbulence in simulations of molecular cloud formation and evolution
Bastian Körtgen, Christoph Federrath, Robi Banerjee
Molecular clouds are to a great extent influenced by turbulent motions in the gas. Numerical and observational studies indicate that the star formation rate and efficiency cruciall…
Deuterium fractionation and H2D+ evolution in turbulent and magnetized cloud cores
Bastian Körtgen, Stefano Bovino, Dominik R. G. Schleicher +2
High-mass stars are expected to form from dense prestellar cores. Their precise formation conditions are widely discussed, including their virial condition, which results in slow c…
Simulating the Formation of Massive Protostars: I. Radiative Feedback and Accretion Disks
Mikhail Klassen, Ralph Pudritz, Rolf Kuiper +2
We present radiation hydrodynamic simulations of collapsing protostellar cores with initial masses of 30, 100, and 200 M. We follow their gravitational collapse and the f…
Supernova Feedback in Molecular Clouds: Global Evolution and Dynamics
Bastian Körtgen, Daniel Seifried, Robi Banerjee +2
We use magnetohydrodynamical simulations of converging warm neutral medium flows to analyse the formation and global evolution of magnetised and turbulent molecular clouds subject…
The formation of the primitive star SDSS J102915+172927: effect of the dust mass and the grain-size distribution
S. Bovino, T. Grassi, D. R. G. Schleicher +1
Understanding the formation of the extremely metal poor star SDSS-J102915+172927 is of fundamental importance to improve our knowledge on the transition between the first and secon…
Formation of star-forming clouds from the magnetised, diffuse interstellar medium
Robi Banerjee, Bastian Körtgen
Molecular clouds, the birthplaces of stars in galaxies, form dynamically from the diffuse atomic gas of the interstellar medium (ISM). The ISM is also threaded by magnetic fields w…
Impact Of Magnetic Fields On Molecular Cloud Formation & Evolution
Bastian Körtgen, Robi Banerjee
We use magnetohydrodynamical simulations of converging flows to investigate the process of molecular cloud formation and evolution out of the magnetised ISM. Here, we investigate w…
Radiation Hydrodynamics using Characteristics on Adaptive Decomposed Domains for Massively Parallel Star Formation Simulations
Lars Buntemeyer, Robi Banerjee, Thomas Peters +2
We present an algorithm for solving the radiative transfer problem on massively parallel computers using adaptive mesh refinement and domain decomposition. The solver is based on t…
A general hybrid radiation transport scheme for star formation simulations on an adaptive grid
Mikhail Klassen, Rolf Kuiper, Ralph E. Pudritz +3
Radiation feedback plays a crucial role in the process of star formation. In order to simulate the thermodynamic evolution of disks, filaments, and the molecular gas surrounding cl…
Star formation efficiency in turbulent clouds
Robi Banerjee
Here we present a simple, but nevertheless, instructive model for the star formation efficiency in turbulent molecular clouds. The model is based on the assumption of log-normal de…
Supernova explosions in magnetized, primordial dark matter halos
D. Seifried, R. Banerjee, D. Schleicher
The first supernova explosions are potentially relevant sources for the production of the first large-scale magnetic fields. For this reason we present a set of high resolution sim…
Cloud formation in colliding flows: influence of the choice of cooling function
Milica Micic, Simon C. O. Glover, Robi Banerjee +1
We study the influence of the choice of cooling function on the formation of molecular clouds in high-resolution three-dimensional simulations of converging flows. We directly comp…
The impact of thermodynamics on gravitational collapse: filament formation and magnetic field amplification
Thomas Peters, Dominik R. G. Schleicher, Ralf S. Klessen +4
Stars form by the gravitational collapse of interstellar gas. The thermodynamic response of the gas can be characterized by an effective equation of state. It determines how gas he…
Time Variability in Simulated Ultracompact and Hypercompact HII Regions
Roberto Galván-Madrid, Thomas Peters, Eric Keto +3
Ultracompact and hypercompact HII regions appear when a star with a mass larger than about 15 solar masses starts to ionize its own environment. Recent observations of time variabi…
Probing the evolution of molecular cloud structure II: From chaos to confinement
J. Kainulainen, H. Beuther, R. Banerjee +2
We present an analysis of the large-scale molecular cloud structure and of the stability of clumpy structures in nearby molecular clouds. In our recent work, we identified a struct…
Molecular Cloud Evolution IV: Magnetic Fields, Ambipolar Diffusion, and the Star Formation Efficiency
Enrique Vazquez-Semadeni, Robi Banerjee, Gilberto Gomez +3
We investigate the formation and evolution of giant molecular clouds (GMCs) by the collision of convergent warm neutral medium (WNM) streams in the interstellar medium, in the pres…