Explaining mercury via a single giant impact is highly unlikely

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorNatl Observ-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorRice Univ-
Autor(es): dc.contributorCtr Fed Educ Tecnol Minas Gerais CEFET-
Autor(es): dc.creatorFranco, P.-
Autor(es): dc.creatorIzidoro, A.-
Autor(es): dc.creatorWinter, O. C.-
Autor(es): dc.creatorTorres, K. S.-
Autor(es): dc.creatorAmarante, A.-
Data de aceite: dc.date.accessioned2025-08-21T19:02:01Z-
Data de disponibilização: dc.date.available2025-08-21T19:02:01Z-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-08-18-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/mnras/stac2183-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/237952-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/237952-
Descrição: dc.descriptionThe classical scenario of terrestrial planet formation is characterized by a phase of giant impacts among Moon-to-Mars mass planetary embryos. While the classic model and its adaptations have produced adequate analogues of the outer three terrestrial planets, Mercury's origin remains elusive. Mercury's high-core mass fraction compared to the Earth's is particularly outstanding. Among collisional hypotheses, this feature has been long interpreted as the outcome of an energetic giant impact among two massive protoplanets. Here, we revisit the classical scenario of terrestrial planet formation with focus on the outcome of giant impacts. We have performed a large number of N-body simulations considering different initial distributions of planetary embryos and planetesimals. Our simulations tested the effects of different giant planet configurations, from virtually circular to very eccentric configurations. We compare the giant impacts produced in our simulations with those that are more likely to account for the formation of Mercury and the Moon according to smoothed hydrodynamic simulations. Impact events that could lead to Moon's formation are observed in all our simulations with up to similar to 20 per cent of all giant impacts, consistent with the range of the expected Moon-forming event conditions. On the other hand, Mercury-forming events via a single giant impact are extremely rare, accounting for less than similar to 1 per cent of all giant impacts. Our results suggest that producing Mercury as a remnant of a single giant impact that strips out the mantle of a differentiated planetary object with Earth-like iron-silicate ratio is challenging and alternative scenarios may be required (e.g. multiple collisions).-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionWelch Foundation-
Descrição: dc.descriptionNASA-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionNatl Observ, BR-20921400 Rio De Janeiro, RJ, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP, Brazil-
Descrição: dc.descriptionRice Univ, Dept Earth Environm & Planetary Sci, 6100 MS 126, Houston, TX 77005 USA-
Descrição: dc.descriptionRice Univ, Dept Phys & Astron, 6100 MS 550, Houston, TX 77005 USA-
Descrição: dc.descriptionSao Paulo State Univ, BR-12516410 Guaratingueta, SP, Brazil-
Descrição: dc.descriptionCtr Fed Educ Tecnol Minas Gerais CEFET, BR-35790000 Curvelo, MG, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, Grp Dinam Orbital & Planetol, BR-12516410 Guaratingueta, SP, Brazil-
Descrição: dc.descriptionSao Paulo State Univ, BR-12516410 Guaratingueta, SP, Brazil-
Descrição: dc.descriptionFAPESP: 2016/24561-0-
Descrição: dc.descriptionFAPESP: 2016/12686-2-
Descrição: dc.descriptionFAPESP: 2016/19556-7-
Descrição: dc.descriptionCNPq: 305210/2018-1-
Descrição: dc.descriptionWelch Foundation: C-2035-20200401-
Descrição: dc.descriptionNASA: 80NSSC18K0828-
Descrição: dc.descriptionCAPES: 88887.310463/2018-00-
Descrição: dc.descriptionCAPES: 3266-
Formato: dc.format5576-5586-
Idioma: dc.languageen-
Publicador: dc.publisherOxford Univ Press-
Relação: dc.relationMonthly Notices Of The Royal Astronomical Society-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectMethods: numerical-
Palavras-chave: dc.subjectProtoplanetary discs-
Título: dc.titleExplaining mercury via a single giant impact is highly unlikely-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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