AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star

Runaway stars produce shocks when passing through interstellar medium at supersonic velocities. Bow shocks have been detected in the mid-infrared for several high-mass runaway stars and in radio waves for one star. Theoretical models predict the production of high-energy photons by non-thermal radia...

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Detalles Bibliográficos
Autores: López Santiago, J., Miceli, M., Valle, María Victoria del, Romero, Gustavo Esteban, Bonito, R., Albacete Colombo, Juan Facundo, Pereira, V., De Castro, E., Damiani, F.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/84650
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84650
Access Level:acceso abierto
Palabra clave:Ciencias Astronómicas
ISM: clouds
radiation mechanisms: non-thermal
stars: individual (AE Aur)
stars: kinematics and dynamics
stars: massive
X-rays: general
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/84650
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spelling AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway starLópez Santiago, J.Miceli, M.Valle, María Victoria delRomero, Gustavo EstebanBonito, R.Albacete Colombo, Juan FacundoPereira, V.De Castro, E.Damiani, F.Ciencias AstronómicasISM: cloudsradiation mechanisms: non-thermalstars: individual (AE Aur)stars: kinematics and dynamicsstars: massiveX-rays: generalRunaway stars produce shocks when passing through interstellar medium at supersonic velocities. Bow shocks have been detected in the mid-infrared for several high-mass runaway stars and in radio waves for one star. Theoretical models predict the production of high-energy photons by non-thermal radiative processes in a number sufficiently large to be detected in X-rays. To date, no stellar bow shock has been detected at such energies. We present the first detection of X-ray emission from a bow shock produced by a runaway star. The star is AE Aur, which was likely expelled from its birthplace due to the encounter of two massive binary systems and now is passing through the dense nebula IC 405. The X-ray emission from the bow shock is detected at 30″ northeast of the star, coinciding with an enhancement in the density of the nebula. From the analysis of the observed X-ray spectrum of the source and our theoretical emission model, we confirm that the X-ray emission is produced mainly by inverse Compton upscattering of infrared photons from dust in the shock front.Instituto Argentino de RadioastronomíaFacultad de Ciencias Astronómicas y Geofísicas2012-08-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/84650enginfo:eu-repo/semantics/altIdentifier/issn/2041-8205info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/757/1/l6info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:54:02Zoai:sedici.unlp.edu.ar:10915/84650Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:54:03.143SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
title AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
spellingShingle AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
López Santiago, J.
Ciencias Astronómicas
ISM: clouds
radiation mechanisms: non-thermal
stars: individual (AE Aur)
stars: kinematics and dynamics
stars: massive
X-rays: general
title_short AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
title_full AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
title_fullStr AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
title_full_unstemmed AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
title_sort AE Aurigae: First detection of non-thermal X-ray emission from a bow shock produced by a runaway star
dc.creator.none.fl_str_mv López Santiago, J.
Miceli, M.
Valle, María Victoria del
Romero, Gustavo Esteban
Bonito, R.
Albacete Colombo, Juan Facundo
Pereira, V.
De Castro, E.
Damiani, F.
author López Santiago, J.
author_facet López Santiago, J.
Miceli, M.
Valle, María Victoria del
Romero, Gustavo Esteban
Bonito, R.
Albacete Colombo, Juan Facundo
Pereira, V.
De Castro, E.
Damiani, F.
author_role author
author2 Miceli, M.
Valle, María Victoria del
Romero, Gustavo Esteban
Bonito, R.
Albacete Colombo, Juan Facundo
Pereira, V.
De Castro, E.
Damiani, F.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
ISM: clouds
radiation mechanisms: non-thermal
stars: individual (AE Aur)
stars: kinematics and dynamics
stars: massive
X-rays: general
topic Ciencias Astronómicas
ISM: clouds
radiation mechanisms: non-thermal
stars: individual (AE Aur)
stars: kinematics and dynamics
stars: massive
X-rays: general
description Runaway stars produce shocks when passing through interstellar medium at supersonic velocities. Bow shocks have been detected in the mid-infrared for several high-mass runaway stars and in radio waves for one star. Theoretical models predict the production of high-energy photons by non-thermal radiative processes in a number sufficiently large to be detected in X-rays. To date, no stellar bow shock has been detected at such energies. We present the first detection of X-ray emission from a bow shock produced by a runaway star. The star is AE Aur, which was likely expelled from its birthplace due to the encounter of two massive binary systems and now is passing through the dense nebula IC 405. The X-ray emission from the bow shock is detected at 30″ northeast of the star, coinciding with an enhancement in the density of the nebula. From the analysis of the observed X-ray spectrum of the source and our theoretical emission model, we confirm that the X-ray emission is produced mainly by inverse Compton upscattering of infrared photons from dust in the shock front.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-30
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84650
url http://sedici.unlp.edu.ar/handle/10915/84650
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2041-8205
info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/757/1/l6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 15,808905

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