ramses-rt: radiation hydrodynamics in the cosmological context

Rosdahl, Joakim; Blaizot, Jérémy; Aubert, Dominique; Stranex, Timothy; Teyssier, Romain

doi:10.1093/mnras/stt1722

Cited by 316 publications

(466 citation statements)

References 85 publications

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“…Using the AMR radiation-hydrodynamics code RAMSES-RT (Rosdahl et al 2013), we have included several physical processes in the simulations, especially heating and cooling of molecular, atomic, and ionized gas; star formation from dense ( > -n 10 cm…”

Section: Methodsmentioning

confidence: 99%

Kiloparsec-scale Simulations of Star Formation in Disk Galaxies. IV. Regulation of Galactic Star Formation Rates by Stellar Feedback

Butler

Tan

Teyssier

et al. 2017

ApJ

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Star formation from the interstellar medium of galactic disks is a basic process controlling the evolution of galaxies. Understanding the star formation rate (SFR) in a local patch of a disk with a given gas mass is thus an important challenge for theoretical models. Here we simulate a kiloparsec region of a disk, following the evolution of self-gravitating molecular clouds down to subparsec scales, as they form stars that then inject feedback energy by dissociating and ionizing UV photons and supernova explosions. We assess the relative importance of each feedback mechanism. We find that H 2 -dissociating feedback results in the largest absolute reduction in star formation compared to the run with no feedback. Subsequently adding photoionization feedback produces a more modest reduction. Our fiducial models that combine all three feedback mechanisms yield, without fine-tuning, SFRs that are in excellent agreement with observations, with H 2 -dissociating photons playing a crucial role. Models that only include supernova feedback-a common method in galaxy evolution simulations-settle to similar SFRs, but with very different temperatures and chemical states of the gas, and with very different spatial distributions of young stars.

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Section: Methodsmentioning

confidence: 99%

Kiloparsec-scale Simulations of Star Formation in Disk Galaxies. IV. Regulation of Galactic Star Formation Rates by Stellar Feedback

Butler

Tan

Teyssier

et al. 2017

ApJ

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“…Hopkins, Quataert & Murray 2011), avoiding a full radiative transfer calculation on the mesh (although such calculations are becoming possible; see e.g. Rosdahl et al 2013).…”

Section: Stellar Windsmentioning

confidence: 99%

The metallicity of galactic winds

Creasey

Theuns

Bower

2014

Monthly Notices of the Royal Astronomical Society

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“…3.07), with concurrent multi-group radiative transfer (RT) calculations (Rosdahl et al 2013). The reader is referred to for details.…”

Section: Simulationsmentioning

confidence: 99%

Diverse Properties of Interstellar Medium Embedding Gamma-Ray Bursts at the Epoch of Reionization

Cen

Kimm

2014

ApJ

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Analysis is performed on ultra-high-resolution large-scale cosmological radiation-hydrodynamic simulations to quantify, for the first time, the physical environment of long-duration gamma-ray bursts (GRBs) at the epoch of reionization. We find that, on parsec scales, 13% of GRBs remain in high-density ( 10 4 cm −3 ) low-temperature star-forming regions, whereas 87% of GRBs occur in low-density (∼10 −2.5 cm −3 ) high-temperature regions heated by supernovae. More importantly, the spectral properties of GRB afterglows, such as the neutral hydrogen column density, total hydrogen column density, dust column density, gas temperature, and metallicity of intervening absorbers, vary strongly from sight line to sight line. Although our model explains extant limited observationally inferred values with respect to circumburst density, metallicity, column density, and dust properties, a substantially larger sample of high-z GRB afterglows would be required to facilitate a statistically solid test of the model. Our findings indicate that any attempt to infer the physical properties (such as metallicity) of the interstellar medium (ISM) of the host galaxy based on a very small number (usually one) of sight lines would be precarious. Utilizing high-z GRBs to probe the ISM and intergalactic medium should be undertaken properly, taking into consideration the physical diversities of the ISM.

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ramses-rt: radiation hydrodynamics in the cosmological context

Cited by 316 publications

References 85 publications

Kiloparsec-scale Simulations of Star Formation in Disk Galaxies. IV. Regulation of Galactic Star Formation Rates by Stellar Feedback

Kiloparsec-scale Simulations of Star Formation in Disk Galaxies. IV. Regulation of Galactic Star Formation Rates by Stellar Feedback

The metallicity of galactic winds

Diverse Properties of Interstellar Medium Embedding Gamma-Ray Bursts at the Epoch of Reionization

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