Origin of the Local Bubble
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/5648 https://doi.org/10.1007/s11214-008-9427-z |
Resumo: | We present a new unbiased search for OB associations in the Solar neighbourhood which have hosted the progenitor stars of the core collapse supernovae responsible for the Local Bubble in the interstellar gas. For this purpose we have analyzed a volume complete set (with a diameter of 400 pc) of B stars drawn from the Hipparcos catalogue and the Arivel data base, from which candidate members were selected by a kinematical criterion. After careful dereddening the star colours we have constructed a colour-magnitude diagram and confirmed that the Upper Scorpius, Upper Centaurus Lupus, and Lower Centaurus Crux subgroups of the Sco OB2 association are the youngest nearby OB associations. We dated their ages with theoretical isochrones in the range of 20–30 Myr, in agreement with previous work. We have traced backwards in time the paths of the stars and found that they entered the volume of the present bubble at 10 to 15 Myr ago. We argue that the Local Bubble began to form then and estimate that 14 to 20 supernovae have exploded since. The implied energy input into the ambient medium can be shown to be sufficient to excavate a bubble of the presently observed size. |
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Origin of the Local BubbleOpen clusters and associations: Sco OB2ISM: local bubbleWe present a new unbiased search for OB associations in the Solar neighbourhood which have hosted the progenitor stars of the core collapse supernovae responsible for the Local Bubble in the interstellar gas. For this purpose we have analyzed a volume complete set (with a diameter of 400 pc) of B stars drawn from the Hipparcos catalogue and the Arivel data base, from which candidate members were selected by a kinematical criterion. After careful dereddening the star colours we have constructed a colour-magnitude diagram and confirmed that the Upper Scorpius, Upper Centaurus Lupus, and Lower Centaurus Crux subgroups of the Sco OB2 association are the youngest nearby OB associations. We dated their ages with theoretical isochrones in the range of 20–30 Myr, in agreement with previous work. We have traced backwards in time the paths of the stars and found that they entered the volume of the present bubble at 10 to 15 Myr ago. We argue that the Local Bubble began to form then and estimate that 14 to 20 supernovae have exploded since. The implied energy input into the ambient medium can be shown to be sufficient to excavate a bubble of the presently observed size.Springer2012-11-15T15:00:58Z2012-11-152009-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/5648http://hdl.handle.net/10174/5648https://doi.org/10.1007/s11214-008-9427-zeng437-448143Space Science Reviewsfuchs@ari.uni-heidelberg.debreitschwerdt@astro.univie.ac.atmavillez@galaxy.lca.uevora.ptdettbarn@ari.uni-heidelberg.de343Fuchs, BurkhardBreitschwerdt, Dieterde Avillez, MiguelDettbarn, Christianinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:44:40Zoai:dspace.uevora.pt:10174/5648Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:40.938194Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Origin of the Local Bubble |
title |
Origin of the Local Bubble |
spellingShingle |
Origin of the Local Bubble Fuchs, Burkhard Open clusters and associations: Sco OB2 ISM: local bubble |
title_short |
Origin of the Local Bubble |
title_full |
Origin of the Local Bubble |
title_fullStr |
Origin of the Local Bubble |
title_full_unstemmed |
Origin of the Local Bubble |
title_sort |
Origin of the Local Bubble |
author |
Fuchs, Burkhard |
author_facet |
Fuchs, Burkhard Breitschwerdt, Dieter de Avillez, Miguel Dettbarn, Christian |
author_role |
author |
author2 |
Breitschwerdt, Dieter de Avillez, Miguel Dettbarn, Christian |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Fuchs, Burkhard Breitschwerdt, Dieter de Avillez, Miguel Dettbarn, Christian |
dc.subject.por.fl_str_mv |
Open clusters and associations: Sco OB2 ISM: local bubble |
topic |
Open clusters and associations: Sco OB2 ISM: local bubble |
description |
We present a new unbiased search for OB associations in the Solar neighbourhood which have hosted the progenitor stars of the core collapse supernovae responsible for the Local Bubble in the interstellar gas. For this purpose we have analyzed a volume complete set (with a diameter of 400 pc) of B stars drawn from the Hipparcos catalogue and the Arivel data base, from which candidate members were selected by a kinematical criterion. After careful dereddening the star colours we have constructed a colour-magnitude diagram and confirmed that the Upper Scorpius, Upper Centaurus Lupus, and Lower Centaurus Crux subgroups of the Sco OB2 association are the youngest nearby OB associations. We dated their ages with theoretical isochrones in the range of 20–30 Myr, in agreement with previous work. We have traced backwards in time the paths of the stars and found that they entered the volume of the present bubble at 10 to 15 Myr ago. We argue that the Local Bubble began to form then and estimate that 14 to 20 supernovae have exploded since. The implied energy input into the ambient medium can be shown to be sufficient to excavate a bubble of the presently observed size. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-03-01T00:00:00Z 2012-11-15T15:00:58Z 2012-11-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/5648 http://hdl.handle.net/10174/5648 https://doi.org/10.1007/s11214-008-9427-z |
url |
http://hdl.handle.net/10174/5648 https://doi.org/10.1007/s11214-008-9427-z |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
437-448 143 Space Science Reviews fuchs@ari.uni-heidelberg.de breitschwerdt@astro.univie.ac.at mavillez@galaxy.lca.uevora.pt dettbarn@ari.uni-heidelberg.de 343 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799136489962995712 |