Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions
[Context] Recurrent novae are, by definition, novae observed in outburst more than once or identified by the presence of vast super-shells, ejected in previous eruptions, surrounding the system. These systems are characterized by remarkably short recurrence times between outbursts, typically ranging...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/398410 |
| Acceso en línea: | http://hdl.handle.net/10261/398410 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydrodynamics Nuclear reactions, nucleosynthesis, abundances Binaries: close Novae, cataclysmic variable |
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Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| title |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| spellingShingle |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions José, Jordi Hydrodynamics Nuclear reactions, nucleosynthesis, abundances Binaries: close Novae, cataclysmic variable |
| title_short |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| title_full |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| title_fullStr |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| title_full_unstemmed |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| title_sort |
Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictions |
| dc.creator.none.fl_str_mv |
José, Jordi Hernanz, Margarita |
| author |
José, Jordi |
| author_facet |
José, Jordi Hernanz, Margarita |
| author_role |
author |
| author2 |
Hernanz, Margarita |
| author2_role |
author |
| dc.contributor.none.fl_str_mv |
Ministerio de Economía y Competitividad (España) Agencia Estatal de Investigación (España) Ministerio de Ciencia e Innovación (España) Generalitat de Catalunya José, Jordi [0000-0002-9937-2685] Hernanz, Margarita [0000-0002-8651-7910] Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Hydrodynamics Nuclear reactions, nucleosynthesis, abundances Binaries: close Novae, cataclysmic variable |
| topic |
Hydrodynamics Nuclear reactions, nucleosynthesis, abundances Binaries: close Novae, cataclysmic variable |
| description |
[Context] Recurrent novae are, by definition, novae observed in outburst more than once or identified by the presence of vast super-shells, ejected in previous eruptions, surrounding the system. These systems are characterized by remarkably short recurrence times between outbursts, typically ranging from 1 to about 100 yr. Such short recurrence times require very high mass-accretion rates, white dwarf masses approaching the Chandrasekhar limit, and very high initial white dwarf luminosities. |
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2025 |
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2025 2025 2025 |
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info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Publisher's version info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10261/398410 |
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http://hdl.handle.net/10261/398410 |
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Inglés |
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Inglés |
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info:eu-repo/semantics/openAccess |
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openAccess |
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EDP Sciences |
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EDP Sciences |
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Hydrodynamic simulations of the recurrent nova T Coronae Borealis: Nucleosynthesis predictionsJosé, JordiHernanz, MargaritaHydrodynamicsNuclear reactions, nucleosynthesis, abundancesBinaries: closeNovae, cataclysmic variable[Context] Recurrent novae are, by definition, novae observed in outburst more than once or identified by the presence of vast super-shells, ejected in previous eruptions, surrounding the system. These systems are characterized by remarkably short recurrence times between outbursts, typically ranging from 1 to about 100 yr. Such short recurrence times require very high mass-accretion rates, white dwarf masses approaching the Chandrasekhar limit, and very high initial white dwarf luminosities.[Aims] T Coronae Borealis (T CrB) is one of the eleven known recurrent novae in our Galaxy. It was observed in outburst in 1866 and 1946, with additional likely eruptions recorded in 1217 and 1787. Given its predicted recurrence period of approximately 80 yr, the next outburst is anticipated to occur imminently, thus motivating a thorough examination of the main characteristics of this system.[Methods] We present 11 new hydrodynamic models of the explosion of T CrB for different combinations of parameters (i.e., the mass, composition, and initial luminosity of the white dwarf, the metallicity of the accreted matter, and the mass-transfer rate). We also report on 8 additional hydrodynamic models that include mixing at the interface between the accreted envelope and the outermost layers of the underlying white dwarf, and 3 models for 1.20 M⊙ white dwarfs.[Results] We show that mass-accretion rates of Ṁacc ∼ 10−8−10−7 M⊙ yr−1 are required to trigger an outburst after 80 yr of accretion of solar-composition material onto white dwarfs with masses MWD∼1.30−1.38 M⊙ and initial luminosities LWD∼0.01−1 L⊙. For lower white dwarf luminosities, less massive white dwarfs, or reduced metallicity in the accreted material, higher mass-accretion rates are required to drive an explosion within this timescale. A decrease in metallicity or initial white dwarf luminosity leads to higher accumulated masses and ignition pressures, resulting in more violent outbursts. These outbursts exhibit higher peak temperatures, higher ejected masses, and greater kinetic energies. Models computed for different white dwarf masses but identical initial luminosities reveal significant differences in the elemental abundances of a wide range of species, including Ne, Na, Mg, Al, Si, P, S, Ar, K, Ca, and Sc. These compositional differences offer a potential diagnostic tool for constraining the parameter space and discriminating between the various T CrB models reported in this study.We thank the anonymous referee for constructive comments, which helped improve the quality of the manuscript. This work has been partially supported by the Spanish MINECO grants PID2023-148661NB-I00 and PID2023-149918NB-I00, the program Unidad de Excelencia María de Maeztu CEX2020-001058-M, the E.U. FEDER funds, and the AGAUR/Generalitat de Catalunya grants SGR-386/2021 and SGR-1526/2021.With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (CEX2020-001058-M)Peer reviewedEDP SciencesMinisterio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)Ministerio de Ciencia e Innovación (España)Generalitat de CatalunyaJosé, Jordi [0000-0002-9937-2685]Hernanz, Margarita [0000-0002-8651-7910]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/398410reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-148661NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2023-149918NB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2020-001058-Mhttps://doi.org/10.1051/0004-6361/202553762Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3984102026-05-22T06:33:51Z |
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