Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations
- Autores
- Corsico, Alejandro Hugo; Romero, Alejandra Daniela; Althaus, Leandro Gabriel; Pelisoli, I.; Kepler, S. O.
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class ofpulsating stars. They are hot stars with effective temperatures of Teff∼30000 K and surface gravities of logg∼4.9, that pulsatewith periods in the range ∼20−40 min. In Romero et al. (2018), weproposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars thatpulsate either in high-order non-radial g(gravity) modes or low-order radialmodes, including the fundamental radial mode. The theoretical modes withperiods in the observed range are unstable due to the κ mechanismassociated with the Z bump in the opacity at logT∼5.25. In thiswork, we extend the study of Romero et al. (2018) by assessing the rate ofperiod changes of nonradial g modes and radial modes and comparing them withthe values measured for BLAPs, in an attempt to validate the proposedevolutionary scenario, and to discern whether the observed modes are high-orderg modes or radial modes.
Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Romero, Alejandra Daniela. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Althaus, Leandro Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Pelisoli, I.. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; Brasil
21st European Workshop on White Dwarf
Austin
Estados Unidos
University of Texas at Austin - Materia
-
asteroseismology
stellar Evolution
white dwarfs - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/268739
Ver los metadatos del registro completo
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Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsationsCorsico, Alejandro HugoRomero, Alejandra DanielaAlthaus, Leandro GabrielPelisoli, I.Kepler, S. O.asteroseismologystellar Evolutionwhite dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class ofpulsating stars. They are hot stars with effective temperatures of Teff∼30000 K and surface gravities of logg∼4.9, that pulsatewith periods in the range ∼20−40 min. In Romero et al. (2018), weproposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars thatpulsate either in high-order non-radial g(gravity) modes or low-order radialmodes, including the fundamental radial mode. The theoretical modes withperiods in the observed range are unstable due to the κ mechanismassociated with the Z bump in the opacity at logT∼5.25. In thiswork, we extend the study of Romero et al. (2018) by assessing the rate ofperiod changes of nonradial g modes and radial modes and comparing them withthe values measured for BLAPs, in an attempt to validate the proposedevolutionary scenario, and to discern whether the observed modes are high-orderg modes or radial modes.Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Romero, Alejandra Daniela. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Althaus, Leandro Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Pelisoli, I.. Universidade Federal do Rio Grande do Sul; BrasilFil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; Brasil21st European Workshop on White DwarfAustinEstados UnidosUniversity of Texas at AustinUniversity of Texas at AustinCastanheira, Barbara2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectWorkshopBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268739Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations; 21st European Workshop on White Dwarf; Austin; Estados Unidos; 2018; 1-7CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1809.07451v1Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:05:22Zoai:ri.conicet.gov.ar:11336/268739instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:05:22.919CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
title |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
spellingShingle |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations Corsico, Alejandro Hugo asteroseismology stellar Evolution white dwarfs |
title_short |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
title_full |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
title_fullStr |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
title_full_unstemmed |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
title_sort |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations |
dc.creator.none.fl_str_mv |
Corsico, Alejandro Hugo Romero, Alejandra Daniela Althaus, Leandro Gabriel Pelisoli, I. Kepler, S. O. |
author |
Corsico, Alejandro Hugo |
author_facet |
Corsico, Alejandro Hugo Romero, Alejandra Daniela Althaus, Leandro Gabriel Pelisoli, I. Kepler, S. O. |
author_role |
author |
author2 |
Romero, Alejandra Daniela Althaus, Leandro Gabriel Pelisoli, I. Kepler, S. O. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Castanheira, Barbara |
dc.subject.none.fl_str_mv |
asteroseismology stellar Evolution white dwarfs |
topic |
asteroseismology stellar Evolution white dwarfs |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class ofpulsating stars. They are hot stars with effective temperatures of Teff∼30000 K and surface gravities of logg∼4.9, that pulsatewith periods in the range ∼20−40 min. In Romero et al. (2018), weproposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars thatpulsate either in high-order non-radial g(gravity) modes or low-order radialmodes, including the fundamental radial mode. The theoretical modes withperiods in the observed range are unstable due to the κ mechanismassociated with the Z bump in the opacity at logT∼5.25. In thiswork, we extend the study of Romero et al. (2018) by assessing the rate ofperiod changes of nonradial g modes and radial modes and comparing them withthe values measured for BLAPs, in an attempt to validate the proposedevolutionary scenario, and to discern whether the observed modes are high-orderg modes or radial modes. Fil: Corsico, Alejandro Hugo. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Romero, Alejandra Daniela. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Althaus, Leandro Gabriel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Pelisoli, I.. Universidade Federal do Rio Grande do Sul; Brasil Fil: Kepler, S. O.. Universidade Federal do Rio Grande do Sul; Brasil 21st European Workshop on White Dwarf Austin Estados Unidos University of Texas at Austin |
description |
The Blue Large-Amplitude Pulsators (BLAPs) constitute a new class ofpulsating stars. They are hot stars with effective temperatures of Teff∼30000 K and surface gravities of logg∼4.9, that pulsatewith periods in the range ∼20−40 min. In Romero et al. (2018), weproposed that BLAPs are hot low-mass He-core pre-white dwarf (WD) stars thatpulsate either in high-order non-radial g(gravity) modes or low-order radialmodes, including the fundamental radial mode. The theoretical modes withperiods in the observed range are unstable due to the κ mechanismassociated with the Z bump in the opacity at logT∼5.25. In thiswork, we extend the study of Romero et al. (2018) by assessing the rate ofperiod changes of nonradial g modes and radial modes and comparing them withthe values measured for BLAPs, in an attempt to validate the proposedevolutionary scenario, and to discern whether the observed modes are high-orderg modes or radial modes. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Workshop Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/268739 Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations; 21st European Workshop on White Dwarf; Austin; Estados Unidos; 2018; 1-7 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/268739 |
identifier_str_mv |
Blue Large-Amplitude Pulsators (BLAPs): possible origin, evolutionary status, and nature of their pulsations; 21st European Workshop on White Dwarf; Austin; Estados Unidos; 2018; 1-7 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1809.07451v1 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
University of Texas at Austin |
publisher.none.fl_str_mv |
University of Texas at Austin |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613889010958336 |
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13.070432 |