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Extreme Horizon

Extreme Horizon

Resolving galactic disks in their cosmic environment

Orion

Orion

Molecular cloud fragmentation and evolution, formation of prestellar cores

Fragdisk

Fragdisk

Fragmentation of self-gravitating disks

Synthetic disk populations

Synthetic disk populations

Resolving protoplanetary disks in massive protostellar clumps

Wind of HD189733

Wind of HD189733

Unveiling the magnetic link between stars and planets

Dusty collapses

Dusty collapses

Understanding the dynamics of dust during the protostellar collapse

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  3. Massive core

Acknowledgement

Project acknowledgement

You may acknowledge this project by citing the associated papers Commer\c{c}on et al. A&A 658, A52 (2022), Mignon-Risse et al. A&A 652, A69 (2021), and Mignon-Risse et al. A&A 656, A85 (2021). This work can be cited with bibtex with
@ARTICLE{2022A&A...658A..52C,
       author = {{Commer{\c{c}}on}, B. and {Gonz{'a}lez}, M. and {Mignon-Risse}, R. and {Hennebelle}, P. and {Vaytet}, N.},
        title = "{Discs and outflows in the early phases of massive star formation: Influence of magnetic fields and ambipolar diffusion}",
      journal = {ap},
     keywords = {hydrodynamics, magnetohydrodynamics (MHD), radiative transfer, stars: formation, methods: numerical, stars: massive, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
         year = 2022,
        month = feb,
       volume = {658},
          eid = {A52},
        pages = {A52},
          doi = {10.1051/0004-6361/202037479},
archivePrefix = {arXiv},
       eprint = {2109.10580},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2022A&A...658A..52C},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2021A&A...652A..69M,
       author = {{Mignon-Risse}, R. and {Gonz{'a}lez}, M. and {Commer{\c{c}}on}, B. and {Rosdahl}, J.},
        title = "{Collapse of turbulent massive cores with ambipolar diffusion and hybrid radiative transfer. I. Accretion and multiplicity}",
      journal = {ap},
     keywords = {accretion, accretion disks, stars: formation, magnetohydrodynamics (MHD), turbulence, stars: massive, methods: numerical, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
         year = 2021,
        month = aug,
       volume = {652},
          eid = {A69},
        pages = {A69},
          doi = {10.1051/0004-6361/202140617},
archivePrefix = {arXiv},
       eprint = {2105.14543},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021A&A...652A..69M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

@ARTICLE{2021A&A...656A..85M,
       author = {{Mignon-Risse}, R. and {Gonz{'a}lez}, M. and {Commer{\c{c}}on}, B.},
        title = "{Collapse of turbulent massive cores with ambipolar diffusion and hybrid radiative transfer. II. Outflows}",
      journal = {ap},
     keywords = {stars: formation, stars: massive, stars: protostars, radiative transfer, magnetohydrodynamics (MHD), methods: numerical, Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies},
         year = 2021,
        month = dec,
       volume = {656},
          eid = {A85},
        pages = {A85},
          doi = {10.1051/0004-6361/202141648},
archivePrefix = {arXiv},
       eprint = {2109.11241},
 primaryClass = {astro-ph.SR},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2021A&A...656A..85M},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
        

This work was supported by the CNRS "Programme National de Physique Stellaire" (PNPS). The numerical simulations were produced on the CEA machine Alfven (founded by DIM ACAV+) and using HPC resources from GENCI-CINES (Grants 2018-047247, and A0080407247). The visualisation of RAMSES data has been done with the OSYRIS python package.


Galactica database acknowledgement

If you use it in your own work, you may acknowledge the origin of the data obtained on the Galactica database like so:

This work reused datasets available on the Galactica simulations database
(http://www.galactica-simulations.eu)
                            
Cite me
Matthias GONZÁLEZ  

Massive core

Summary

This project corresponds to a series of 3 papers.

We used state-of-the-art three-dimensional adaptive-mesh-refinement models of massive dense core collapse, which integrate the equations of (resistive) grey radiation magnetohydrodynamics, and include sink particle evolution. For the first time, we include both protostellar radiative feedback via pre-main-sequence evolutionary tracks and magnetic ambipolar diffusion.

The adaptive mesh refinement scheme is employed to resolve scales up to about ~5 AU.

In the first paper (Commerçon et al. A&A 2022, 658:A52 - Paper I), we focus on the role of magnetic fields and ambipolar diffusion in the formation of outflows and discs. We studied three different cases: a purely hydrodynamical run, a magnetised simulation under the ideal approximation (perfect coupling), and a calculation with ambipolar diffusion (resistive case). In the most micro-physically complex model (resistive MHD), we also investigated the effect the initial amplitude of both magnetic field and solid body rotation have on the final properties of the massive protostellar system.

In the next two papers (Mignon-Risse et al. A&A 2021, 652:A69, and Mignon-Risse et al. A&A 2021, 656:A85 - Papers II and III), we stick to the non-ideal MHD setup but we set an initial turbulence field within the cloud and include a hybrid radiative transfer method for stellar irradiation. We varied the Mach and Alfvénic Mach numbers to probe sub- and super-Alfvénic turbulence and sub- and supersonic turbulence regimes.

Available simulations

HYDRO (Paper I)

MU5I (Paper I)

MU2AD (Paper I)

MU5AD (Paper I)

MU5ADf (Paper I)

NoTurb (Papers II and III)

SupA (Papers II and III)

SupAS (Papers II and III)

SubA (Papers II and III)

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This material is Open Data