1. Identificação | |
Tipo de Referência | Artigo em Revista Científica (Journal Article) |
Site | mtc-m21c.sid.inpe.br |
Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identificador | 8JMKD3MGP3W34R/3TN989E |
Repositório | sid.inpe.br/mtc-m21c/2019/07.26.13.59 |
Última Atualização | 2019:07.26.13.59.02 (UTC) simone |
Repositório de Metadados | sid.inpe.br/mtc-m21c/2019/07.26.13.59.02 |
Última Atualização dos Metadados | 2020:01.06.11.42.17 (UTC) administrator |
DOI | 10.1093/mnras/stz621 |
ISSN | 0035-8711 1365-2966 |
Chave de Citação | LundWFVSBJK:2019:RaHySi |
Título | Radiation hydrodynamic simulations of massive star formation via gravitationally trapped H II regions – spherically symmetric ionized accretion flows |
Ano | 2019 |
Mês | May |
Data de Acesso | 09 maio 2024 |
Tipo de Trabalho | journal article |
Tipo Secundário | PRE PI |
Número de Arquivos | 1 |
Tamanho | 2563 KiB |
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2. Contextualização | |
Autor | 1 Lund, Kristin 2 Wood, K. 3 Falceta-Gonçalves, Diego 4 Vandenbroucke, Bert 5 Sartorio, Nina Sanches 6 Bonnell, I. A. 7 Johnston, K. G. 8 Keto, E. |
ORCID | 1 0000-0003-0891-5398 2 3 4 0000-0001-7241-1704 |
Grupo | 1 2 3 4 5 AST-CEA-SESPG-INPE-MCTIC-GOV-BR |
Afiliação | 1 University of St Andrews 2 University of St Andrews 3 University of St Andrews 4 University of St Andrews 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 University of St Andrews 7 The University of Leeds 8 Harvard-Smithsonian Center for Astrophysics |
Endereço de e-Mail do Autor | 1 kblg@st-andrews.ac.uk |
Revista | Monthly Notices of the Royal Astronomical Society |
Volume | 485 |
Número | 3 |
Páginas | 3761-3770 |
Nota Secundária | A1_QUÍMICA A1_INTERDISCIPLINAR A1_GEOCIÊNCIAS A1_ENGENHARIAS_III A2_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA A2_ASTRONOMIA_/_FÍSICA B2_ENSINO B5_ENGENHARIAS_IV |
Histórico (UTC) | 2019-07-26 13:59:02 :: simone -> administrator :: 2019-07-26 13:59:04 :: administrator -> simone :: 2019 2019-07-26 13:59:51 :: simone -> administrator :: 2019 2020-01-06 11:42:17 :: administrator -> simone :: 2019 |
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3. Conteúdo e estrutura | |
É a matriz ou uma cópia? | é a matriz |
Estágio do Conteúdo | concluido |
Transferível | 1 |
Tipo do Conteúdo | External Contribution |
Tipo de Versão | publisher |
Palavras-Chave | hydrodynamics radiative transfer stars: formation stars: massive H II regions |
Resumo | This paper investigates the gravitational trapping of H II regions predicted by steady-state analysis using radiation hydrodynamical simulations. We present idealized spherically symmetric radiation hydrodynamical simulations of the early evolution of H II regions including the gravity of the central source. As with analytic steady-state solutions of spherically symmetric ionized Bondi accretion flows, we find gravitationally trapped H II regions with accretion through the ionization front on to the source. We found that, for a constant ionizing luminosity, fluctuations in the ionization front are unstable. This instability only occurs in this spherically symmetric accretion geometry. In the context of massive star formation, the ionizing luminosity increases with time as the source accretes mass. The maximum radius of the recurring H II region increases on the accretion time-scale until it reaches the sonic radius, where the infall velocity equals the sound speed of the ionized gas, after which it enters a pressure-driven expansion phase. This expansion prevents accretion of gas through the ionization front, the accretion rate on to the star decreases to zero, and it stops growing from accretion. Because of the time required for any significant change in stellar mass and luminosity through accretion our simulations keep both mass and luminosity constant and follow the evolution from trapped to expanding in a piecewise manner. Implications of this evolution of H II regions include a continuation of accretion of material on to forming stars for a period after the star starts to emit ionizing radiation, and an extension of the lifetime of ultracompact H II regions. |
Área | CEA |
Arranjo | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > AST > Radiation hydrodynamic simulations... |
Conteúdo da Pasta doc | acessar |
Conteúdo da Pasta source | não têm arquivos |
Conteúdo da Pasta agreement | |
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4. Condições de acesso e uso | |
URL dos dados | http://mtc-m21c.sid.inpe.br/ibi/8JMKD3MGP3W34R/3TN989E |
URL dos dados zipados | http://mtc-m21c.sid.inpe.br/zip/8JMKD3MGP3W34R/3TN989E |
Idioma | en |
Arquivo Alvo | lund_radiation.pdf |
Grupo de Usuários | simone |
Grupo de Leitores | administrator simone |
Visibilidade | shown |
Política de Arquivamento | allowpublisher allowfinaldraft |
Permissão de Atualização | não transferida |
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5. Fontes relacionadas | |
Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F2NE4L |
Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
Acervo Hospedeiro | urlib.net/www/2017/11.22.19.04 |
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6. Notas | |
Campos Vazios | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url |
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7. Controle da descrição | |
e-Mail (login) | simone |
atualizar | |
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