Protostellar collapse using multigroup radiation hydrodynamics

dc.contributor.authorVaytet, Neil
dc.contributor.authorChabrier, Gilles
dc.contributor.authorAudit, Edouard
dc.contributor.authorCommercon, Benoit
dc.contributor.authorMasson, Jacques
dc.contributor.authorGonzalez, Matthias
dc.contributor.authorFerguson, Jason W.
dc.contributor.authorDelahaye, Franck
dc.date.accessioned2016-05-13T17:58:45Z
dc.date.available2016-05-13T17:58:45Z
dc.date.issued2015
dc.descriptionClick on the link to access the article (may not be free).en_US
dc.description.abstractMany simulations of protostellar collapse make use of a grey treatment of radiative transfer coupled to the hydrodynamics. However, interstellar gas and dust opacities present large variations as a function of frequency. In this paper, we present multigroup radiation hydrodynamics simulations of the collapse of a spherically symmetric cloud and the formation of the first and second Larson cores. We have used a non-ideal gas equation of state as well as an extensive set of spectral opacities. Small differences between grey and multigroup simulations were observed. The first and second core accretion shocks were found to be super- and sub-critical, respectively. Varying the initial size and mass of the parent cloud had little impact on the core properties (especially for the second core). We finally present early results from 3D simulations that were performed using the RAMSES code.en_US
dc.identifier.citationVaytet, Neil; Chabrier, Gilles; Audit, Edouard; Commercon, Benoit; Masson, Jacques; Gonzalez, Matthias; Ferguson, Jason W.; Delahaye, Franck. Protostellar collapse using multigroup radiation hydrodynamics. Numerical Modeling of Space Plasma Flows ASTRONUM-2014, ASP Volume 498. Proceedings of a 9th International Conference Held 23-27 Jun, 2014 in Long Beach, CA.Edited by N.V. Pogorelov et al. San Francisco: Astronomical Society of the Pacific, 2015, p.133-138en_US
dc.identifier.isbn978-1-58381-880-0
dc.identifier.otherWOS:000373970200021
dc.identifier.urihttp://www.aspbooks.org/a/volumes/table_of_contents/?book_id=562
dc.identifier.urihttp://hdl.handle.net/10057/12042
dc.language.isoen_USen_US
dc.publisherAstronomical Society of the Pacificen_US
dc.relation.ispartofseriesNumerical Modeling of Space Plasma Flows ASTRONUM-2014;v.498
dc.rights.holder© Copyright 1988 - 2016 - Astronomical Society of the Pacificen_US
dc.subject2nd collapseen_US
dc.subject1st collapseen_US
dc.subjectSimulationsen_US
dc.subjectOpacitiesen_US
dc.subjectEquationen_US
dc.subjectRAMSESen_US
dc.subjectModelen_US
dc.subjectCodeen_US
dc.subjectStaren_US
dc.subjectResearch Subject Categories::NATURAL SCIENCES::Physics::Astronomy and astrophysics::Astronomyen_US
dc.titleProtostellar collapse using multigroup radiation hydrodynamicsen_US
dc.typeConference paperen_US
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