7Be in the outburst of the ONe nova V6595 Sgr

We report on the search for the 7Be ii isotope in the outbursts of the classical nova V6595 Sgr by means of high-resolution Ultraviolet and Visual Echelle Spectrograph (UVES) observations taken at the European Southern Observatory's Very Large Telescope in 2021 April, about two weeks after its...

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Autores: Molaro, P., Izzo, L., D'Odorico, Valentina, Aydi, E., Bonifácio, Paulo, Cescutti, Gabriele, Harvey, Euan S., Hernanz, Margarita, Selvelli, P., Valle, M. della
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/269725
Acceso en línea:http://hdl.handle.net/10261/269725
Access Level:acceso abierto
Palabra clave:Nuclear reactions
Nucleosynthesis
Abundances
Stars: abundances
Stars: individual: V6595 Sgr
Novae
Cataclysmic variables
Galaxy: evolution
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spelling 7Be in the outburst of the ONe nova V6595 SgrMolaro, P.Izzo, L.D'Odorico, ValentinaAydi, E.Bonifácio, PauloCescutti, GabrieleHarvey, Euan S.Hernanz, MargaritaSelvelli, P.Valle, M. dellaNuclear reactionsNucleosynthesisAbundancesStars: abundancesStars: individual: V6595 SgrNovaeCataclysmic variablesGalaxy: evolutionWe report on the search for the 7Be ii isotope in the outbursts of the classical nova V6595 Sgr by means of high-resolution Ultraviolet and Visual Echelle Spectrograph (UVES) observations taken at the European Southern Observatory's Very Large Telescope in 2021 April, about two weeks after its discovery and under difficult circumstances due to the pandemic. Narrow absorption components with velocities at -2620 and-2820 km s-1, superposed on broader and shallow absorption, are observed in the outburst spectra for the 7Be ii λλ313.0583, 313.1228 nm doublet resonance lines, as well as in several other elements such as Ca ii, Fe i, Mg i, Na i, H i and Li i. Using the Ca ii K line as a reference element, we infer N(7Be)/N(H) ≈ 7.4 × 10-6, or ≈ 9.8 × 10-6 when the 7Be decay is taken into account. The 7Be abundance is about half of the value most frequently measured in novae. The possible presence of overionization in the layers where 7Be ii is detected is also discussed. Observations taken at the Telescopio Nazionale Galileo in La Palma 91 days after discovery showed prominent emission lines of oxygen and neon, which allow us to classify the nova as ONe type. Therefore, although 7Be is expected to be higher in CO novae, it is found at comparable levels in both nova types.LI was supported by two grants from VILLUM FONDEN (project number 16599 and 25501). M. H. acknowledges support from grant PID2019-108709GB-100 from MICINN (Spain).Royal Astronomical SocietyVillum FondenMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/269725reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICIU//PID2019-108709GB-100The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/stab3106http://doi.org/10.1093/mnras/stab3106Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2697252026-05-22T06:33:51Z
dc.title.none.fl_str_mv 7Be in the outburst of the ONe nova V6595 Sgr
title 7Be in the outburst of the ONe nova V6595 Sgr
spellingShingle 7Be in the outburst of the ONe nova V6595 Sgr
Molaro, P.
Nuclear reactions
Nucleosynthesis
Abundances
Stars: abundances
Stars: individual: V6595 Sgr
Novae
Cataclysmic variables
Galaxy: evolution
title_short 7Be in the outburst of the ONe nova V6595 Sgr
title_full 7Be in the outburst of the ONe nova V6595 Sgr
title_fullStr 7Be in the outburst of the ONe nova V6595 Sgr
title_full_unstemmed 7Be in the outburst of the ONe nova V6595 Sgr
title_sort 7Be in the outburst of the ONe nova V6595 Sgr
dc.creator.none.fl_str_mv Molaro, P.
Izzo, L.
D'Odorico, Valentina
Aydi, E.
Bonifácio, Paulo
Cescutti, Gabriele
Harvey, Euan S.
Hernanz, Margarita
Selvelli, P.
Valle, M. della
author Molaro, P.
author_facet Molaro, P.
Izzo, L.
D'Odorico, Valentina
Aydi, E.
Bonifácio, Paulo
Cescutti, Gabriele
Harvey, Euan S.
Hernanz, Margarita
Selvelli, P.
Valle, M. della
author_role author
author2 Izzo, L.
D'Odorico, Valentina
Aydi, E.
Bonifácio, Paulo
Cescutti, Gabriele
Harvey, Euan S.
Hernanz, Margarita
Selvelli, P.
Valle, M. della
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Villum Fonden
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Nuclear reactions
Nucleosynthesis
Abundances
Stars: abundances
Stars: individual: V6595 Sgr
Novae
Cataclysmic variables
Galaxy: evolution
topic Nuclear reactions
Nucleosynthesis
Abundances
Stars: abundances
Stars: individual: V6595 Sgr
Novae
Cataclysmic variables
Galaxy: evolution
description We report on the search for the 7Be ii isotope in the outbursts of the classical nova V6595 Sgr by means of high-resolution Ultraviolet and Visual Echelle Spectrograph (UVES) observations taken at the European Southern Observatory's Very Large Telescope in 2021 April, about two weeks after its discovery and under difficult circumstances due to the pandemic. Narrow absorption components with velocities at -2620 and-2820 km s-1, superposed on broader and shallow absorption, are observed in the outburst spectra for the 7Be ii λλ313.0583, 313.1228 nm doublet resonance lines, as well as in several other elements such as Ca ii, Fe i, Mg i, Na i, H i and Li i. Using the Ca ii K line as a reference element, we infer N(7Be)/N(H) ≈ 7.4 × 10-6, or ≈ 9.8 × 10-6 when the 7Be decay is taken into account. The 7Be abundance is about half of the value most frequently measured in novae. The possible presence of overionization in the layers where 7Be ii is detected is also discussed. Observations taken at the Telescopio Nazionale Galileo in La Palma 91 days after discovery showed prominent emission lines of oxygen and neon, which allow us to classify the nova as ONe type. Therefore, although 7Be is expected to be higher in CO novae, it is found at comparable levels in both nova types.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/269725
url http://hdl.handle.net/10261/269725
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICIU//PID2019-108709GB-100
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1093/mnras/stab3106
http://doi.org/10.1093/mnras/stab3106
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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