The progenitor of the type IIb SN 2008ax revisited

Autores
Folatelli, Gaston; Bersten, Melina Cecilia; Kuncarayakti, Hanindyo; Benvenuto, Omar Gustavo; Maeda, Keiichi; Nomoto, Ken’ichi
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hubble Space Telescope observations of the site of the supernova (SN) SN 2008ax obtained in 2011 and 2013 reveal that the possible progenitor object detected in pre-explosion images was in fact multiple. Four point sources are resolved in the new, higher-resolution images. We identify one of the sources with the fading SN. The other three objects are consistent with single supergiant stars. We conclude that their light contaminated the previously identified progenitor candidate. After subtraction of these stars, the progenitor appears to be significantly fainter and bluer than previously measured. Post-explosion photometry at the SN location indicates that the progenitor object has disappeared. If single, the progenitor is compatible with a supergiant star of B to mid-A spectral type, while a Wolf?Rayet (W-R) star would be too luminous in the ultraviolet to account for the observations. Moreover, our hydrodynamical modeling shows that the pre-explosion mass was 4?5 M⊙ and the radius was 30?50 R⊙, which is incompatible with a W-R progenitor. We present a possible interacting binary progenitor computed with our evolutionary models that reproduces all the observational evidence. A companion star as luminous as an O9?B0 main-sequence star may have remained after the explosion.
Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Kuncarayakti, Hanindyo . Millennium Institute of Astrophysics; Chile
Fil: Benvenuto, Omar Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Maeda, Keiichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Nomoto, Ken’ichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Materia
Supernovae
Sn2008ax (Supernova)
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/12612
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12612
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The progenitor of the type IIb SN 2008ax revisitedFolatelli, GastonBersten, Melina CeciliaKuncarayakti, Hanindyo Benvenuto, Omar GustavoMaeda, Keiichi Nomoto, Ken’ichi SupernovaeSn2008ax (Supernova)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Hubble Space Telescope observations of the site of the supernova (SN) SN 2008ax obtained in 2011 and 2013 reveal that the possible progenitor object detected in pre-explosion images was in fact multiple. Four point sources are resolved in the new, higher-resolution images. We identify one of the sources with the fading SN. The other three objects are consistent with single supergiant stars. We conclude that their light contaminated the previously identified progenitor candidate. After subtraction of these stars, the progenitor appears to be significantly fainter and bluer than previously measured. Post-explosion photometry at the SN location indicates that the progenitor object has disappeared. If single, the progenitor is compatible with a supergiant star of B to mid-A spectral type, while a Wolf?Rayet (W-R) star would be too luminous in the ultraviolet to account for the observations. Moreover, our hydrodynamical modeling shows that the pre-explosion mass was 4?5 M⊙ and the radius was 30?50 R⊙, which is incompatible with a W-R progenitor. We present a possible interacting binary progenitor computed with our evolutionary models that reproduces all the observational evidence. A companion star as luminous as an O9?B0 main-sequence star may have remained after the explosion.Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; JapónFil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; JapónFil: Kuncarayakti, Hanindyo . Millennium Institute of Astrophysics; ChileFil: Benvenuto, Omar Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Maeda, Keiichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; JapónFil: Nomoto, Ken’ichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; JapónIop Publishing2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12612Folatelli, Gaston; Bersten, Melina Cecilia; Kuncarayakti, Hanindyo ; Benvenuto, Omar Gustavo; Maeda, Keiichi ; et al.; The progenitor of the type IIb SN 2008ax revisited; Iop Publishing; Astrophysical Journal; 811; 2; 10-2015; 147-1590004-637Xenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/811/2/147/metainfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/811/2/147info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:23Zoai:ri.conicet.gov.ar:11336/12612instacron: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 10:43:23.853CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The progenitor of the type IIb SN 2008ax revisited
title The progenitor of the type IIb SN 2008ax revisited
spellingShingle The progenitor of the type IIb SN 2008ax revisited
Folatelli, Gaston
Supernovae
Sn2008ax (Supernova)
title_short The progenitor of the type IIb SN 2008ax revisited
title_full The progenitor of the type IIb SN 2008ax revisited
title_fullStr The progenitor of the type IIb SN 2008ax revisited
title_full_unstemmed The progenitor of the type IIb SN 2008ax revisited
title_sort The progenitor of the type IIb SN 2008ax revisited
dc.creator.none.fl_str_mv Folatelli, Gaston
Bersten, Melina Cecilia
Kuncarayakti, Hanindyo
Benvenuto, Omar Gustavo
Maeda, Keiichi
Nomoto, Ken’ichi
author Folatelli, Gaston
author_facet Folatelli, Gaston
Bersten, Melina Cecilia
Kuncarayakti, Hanindyo
Benvenuto, Omar Gustavo
Maeda, Keiichi
Nomoto, Ken’ichi
author_role author
author2 Bersten, Melina Cecilia
Kuncarayakti, Hanindyo
Benvenuto, Omar Gustavo
Maeda, Keiichi
Nomoto, Ken’ichi
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Supernovae
Sn2008ax (Supernova)
topic Supernovae
Sn2008ax (Supernova)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Hubble Space Telescope observations of the site of the supernova (SN) SN 2008ax obtained in 2011 and 2013 reveal that the possible progenitor object detected in pre-explosion images was in fact multiple. Four point sources are resolved in the new, higher-resolution images. We identify one of the sources with the fading SN. The other three objects are consistent with single supergiant stars. We conclude that their light contaminated the previously identified progenitor candidate. After subtraction of these stars, the progenitor appears to be significantly fainter and bluer than previously measured. Post-explosion photometry at the SN location indicates that the progenitor object has disappeared. If single, the progenitor is compatible with a supergiant star of B to mid-A spectral type, while a Wolf?Rayet (W-R) star would be too luminous in the ultraviolet to account for the observations. Moreover, our hydrodynamical modeling shows that the pre-explosion mass was 4?5 M⊙ and the radius was 30?50 R⊙, which is incompatible with a W-R progenitor. We present a possible interacting binary progenitor computed with our evolutionary models that reproduces all the observational evidence. A companion star as luminous as an O9?B0 main-sequence star may have remained after the explosion.
Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Kuncarayakti, Hanindyo . Millennium Institute of Astrophysics; Chile
Fil: Benvenuto, Omar Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Maeda, Keiichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
Fil: Nomoto, Ken’ichi . University of Tokyo. Kavli Institute for the Physics and Mathematics of the Universe; Japón
description Hubble Space Telescope observations of the site of the supernova (SN) SN 2008ax obtained in 2011 and 2013 reveal that the possible progenitor object detected in pre-explosion images was in fact multiple. Four point sources are resolved in the new, higher-resolution images. We identify one of the sources with the fading SN. The other three objects are consistent with single supergiant stars. We conclude that their light contaminated the previously identified progenitor candidate. After subtraction of these stars, the progenitor appears to be significantly fainter and bluer than previously measured. Post-explosion photometry at the SN location indicates that the progenitor object has disappeared. If single, the progenitor is compatible with a supergiant star of B to mid-A spectral type, while a Wolf?Rayet (W-R) star would be too luminous in the ultraviolet to account for the observations. Moreover, our hydrodynamical modeling shows that the pre-explosion mass was 4?5 M⊙ and the radius was 30?50 R⊙, which is incompatible with a W-R progenitor. We present a possible interacting binary progenitor computed with our evolutionary models that reproduces all the observational evidence. A companion star as luminous as an O9?B0 main-sequence star may have remained after the explosion.
publishDate 2015
dc.date.none.fl_str_mv 2015-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/12612
Folatelli, Gaston; Bersten, Melina Cecilia; Kuncarayakti, Hanindyo ; Benvenuto, Omar Gustavo; Maeda, Keiichi ; et al.; The progenitor of the type IIb SN 2008ax revisited; Iop Publishing; Astrophysical Journal; 811; 2; 10-2015; 147-159
0004-637X
url http://hdl.handle.net/11336/12612
identifier_str_mv Folatelli, Gaston; Bersten, Melina Cecilia; Kuncarayakti, Hanindyo ; Benvenuto, Omar Gustavo; Maeda, Keiichi ; et al.; The progenitor of the type IIb SN 2008ax revisited; Iop Publishing; Astrophysical Journal; 811; 2; 10-2015; 147-159
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/811/2/147/meta
info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/811/2/147
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
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
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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score 13.070432

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