A study of the association of Fermi sources with massive young galactic objects

Autores
Munar Adrover, P.; Paredes, Josep M; Romero, Gustavo Esteban
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Massive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical models predict. To identify young galactic objects that may emit gamma rays, we crossed the Fermi First Year Catalog with some catalogs of known massive young stellar objects (MYSOs), early type stars, and OB associations, and we implemented Monte Carlo simulations to find the probability of chance coincidences. We obtained a list of massive MYSOs that are spatially coincident with Fermi sources. Our results indicate that ~70% of these candidates should be gamma-ray sources with a confidence of ~5σ. We studied the coincidences one by one to check the viability of these young sources as potential counterparts to Fermi sources and made a short list of best targets for new detailed multifrequency observations. The results for other type of young galactic objects are not conclusive.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/123357
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/123357
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling A study of the association of Fermi sources with massive young galactic objectsMunar Adrover, P.Paredes, Josep MRomero, Gustavo EstebanCiencias AstronómicasCiencias ExactasStars: early-typeGamma rays: starsISM: jets and outflowsMassive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical models predict. To identify young galactic objects that may emit gamma rays, we crossed the Fermi First Year Catalog with some catalogs of known massive young stellar objects (MYSOs), early type stars, and OB associations, and we implemented Monte Carlo simulations to find the probability of chance coincidences. We obtained a list of massive MYSOs that are spatially coincident with Fermi sources. Our results indicate that ~70% of these candidates should be gamma-ray sources with a confidence of ~5σ. We studied the coincidences one by one to check the viability of these young sources as potential counterparts to Fermi sources and made a short list of best targets for new detailed multifrequency observations. The results for other type of young galactic objects are not conclusive.Facultad de Ciencias Astronómicas y Geofísicas2011-05-12info: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/10915/123357enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/issn/1432-0746info:eu-repo/semantics/altIdentifier/arxiv/1104.2012info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201116580info: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:UNLP2025-09-10T12:32:01Zoai:sedici.unlp.edu.ar:10915/123357Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-10 12:32:01.436SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv A study of the association of Fermi sources with massive young galactic objects
title A study of the association of Fermi sources with massive young galactic objects
spellingShingle A study of the association of Fermi sources with massive young galactic objects
Munar Adrover, P.
Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
title_short A study of the association of Fermi sources with massive young galactic objects
title_full A study of the association of Fermi sources with massive young galactic objects
title_fullStr A study of the association of Fermi sources with massive young galactic objects
title_full_unstemmed A study of the association of Fermi sources with massive young galactic objects
title_sort A study of the association of Fermi sources with massive young galactic objects
dc.creator.none.fl_str_mv Munar Adrover, P.
Paredes, Josep M
Romero, Gustavo Esteban
author Munar Adrover, P.
author_facet Munar Adrover, P.
Paredes, Josep M
Romero, Gustavo Esteban
author_role author
author2 Paredes, Josep M
Romero, Gustavo Esteban
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
topic Ciencias Astronómicas
Ciencias Exactas
Stars: early-type
Gamma rays: stars
ISM: jets and outflows
dc.description.none.fl_txt_mv Massive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical models predict. To identify young galactic objects that may emit gamma rays, we crossed the Fermi First Year Catalog with some catalogs of known massive young stellar objects (MYSOs), early type stars, and OB associations, and we implemented Monte Carlo simulations to find the probability of chance coincidences. We obtained a list of massive MYSOs that are spatially coincident with Fermi sources. Our results indicate that ~70% of these candidates should be gamma-ray sources with a confidence of ~5σ. We studied the coincidences one by one to check the viability of these young sources as potential counterparts to Fermi sources and made a short list of best targets for new detailed multifrequency observations. The results for other type of young galactic objects are not conclusive.
Facultad de Ciencias Astronómicas y Geofísicas
description Massive protostars have associated bipolar outflows that can produce strong shocks when they interact with the surrounding medium. At these shocks, particles can be accelerated up to relativistic energies. Relativistic electrons and protons can then produce gamma-ray emission, as some theoretical models predict. To identify young galactic objects that may emit gamma rays, we crossed the Fermi First Year Catalog with some catalogs of known massive young stellar objects (MYSOs), early type stars, and OB associations, and we implemented Monte Carlo simulations to find the probability of chance coincidences. We obtained a list of massive MYSOs that are spatially coincident with Fermi sources. Our results indicate that ~70% of these candidates should be gamma-ray sources with a confidence of ~5σ. We studied the coincidences one by one to check the viability of these young sources as potential counterparts to Fermi sources and made a short list of best targets for new detailed multifrequency observations. The results for other type of young galactic objects are not conclusive.
publishDate 2011
dc.date.none.fl_str_mv 2011-05-12
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/10915/123357
url http://sedici.unlp.edu.ar/handle/10915/123357
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6361
info:eu-repo/semantics/altIdentifier/issn/1432-0746
info:eu-repo/semantics/altIdentifier/arxiv/1104.2012
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201116580
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
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution 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 12.993085

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