Triggered star formation in a molecular shell created by a SNR?

We present a study of a new molecular shell, G 126.1-0.8-14, using available multiwavelength Galactic plane surveys and optical Gemini observations. A well-defined shell-like structure is observed in the CO(1-0) line emission at (l,b) = (126°.1, -0°.8), in the velocity range -10.5 to -15.5 km s<S...

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Detalles Bibliográficos
Autores: Cichowolski, Silvina, Pineault, Serge, Gamen, Roberto Claudio, Arnal, Edmundo Marcelo, Suad, Laura Andrea, Ortega, M. E.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/85058
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85058
Access Level:acceso abierto
Palabra clave:Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
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repository_id_str
spelling Triggered star formation in a molecular shell created by a SNR?Cichowolski, SilvinaPineault, SergeGamen, Roberto ClaudioArnal, Edmundo MarceloSuad, Laura AndreaOrtega, M. E.Ciencias AstronómicasHII regionsISM: kinematics and dynamicsISM: supernova remnantsStars: formationStars: massiveWe present a study of a new molecular shell, G 126.1-0.8-14, using available multiwavelength Galactic plane surveys and optical Gemini observations. A well-defined shell-like structure is observed in the CO(1-0) line emission at (l,b) = (126°.1, -0°.8), in the velocity range -10.5 to -15.5 km s<SUP>-1</SUP>. The H I emission shows a region of low emissivity inside G 126.1-0.8-14, while radio continuum observations reveal faint non-thermal emission possibly related to this shell. Optical spectra obtained with Gemini South show the existence of B-type stars likely to be associated with G 126.1-0.8-14. An estimate of the stellar wind energy injected by these stars shows that they alone cannot be able to create such a structure. On the other hand, one supernova explosionwould provide enough energy to generate the shell. Using the MSX, IRAS and WISE point source catalogues we have found about 30 young stellar object candidates, whose birth could have been triggered by the expansion of G 126.1-0.8-14. In this context, Sh2-187 could be a consequence of the action on its surroundings of the most massive (and thus most evolve) of the stars formed by the expanding molecular shell.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La PlataInstituto Argentino de Radioastronomía2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1089-1101http://sedici.unlp.edu.ar/handle/10915/85058enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt2259info: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:UNLP2024-05-08T12:54:21Zoai:sedici.unlp.edu.ar:10915/85058Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:54:21.538SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Triggered star formation in a molecular shell created by a SNR?
title Triggered star formation in a molecular shell created by a SNR?
spellingShingle Triggered star formation in a molecular shell created by a SNR?
Cichowolski, Silvina
Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
title_short Triggered star formation in a molecular shell created by a SNR?
title_full Triggered star formation in a molecular shell created by a SNR?
title_fullStr Triggered star formation in a molecular shell created by a SNR?
title_full_unstemmed Triggered star formation in a molecular shell created by a SNR?
title_sort Triggered star formation in a molecular shell created by a SNR?
dc.creator.none.fl_str_mv Cichowolski, Silvina
Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
author Cichowolski, Silvina
author_facet Cichowolski, Silvina
Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
author_role author
author2 Pineault, Serge
Gamen, Roberto Claudio
Arnal, Edmundo Marcelo
Suad, Laura Andrea
Ortega, M. E.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
topic Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive
description We present a study of a new molecular shell, G 126.1-0.8-14, using available multiwavelength Galactic plane surveys and optical Gemini observations. A well-defined shell-like structure is observed in the CO(1-0) line emission at (l,b) = (126°.1, -0°.8), in the velocity range -10.5 to -15.5 km s<SUP>-1</SUP>. The H I emission shows a region of low emissivity inside G 126.1-0.8-14, while radio continuum observations reveal faint non-thermal emission possibly related to this shell. Optical spectra obtained with Gemini South show the existence of B-type stars likely to be associated with G 126.1-0.8-14. An estimate of the stellar wind energy injected by these stars shows that they alone cannot be able to create such a structure. On the other hand, one supernova explosionwould provide enough energy to generate the shell. Using the MSX, IRAS and WISE point source catalogues we have found about 30 young stellar object candidates, whose birth could have been triggered by the expansion of G 126.1-0.8-14. In this context, Sh2-187 could be a consequence of the action on its surroundings of the most massive (and thus most evolve) of the stars formed by the expanding molecular shell.
publishDate 2014
dc.date.none.fl_str_mv 2014
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/10915/85058
url http://sedici.unlp.edu.ar/handle/10915/85058
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt2259
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
1089-1101
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 15,811543

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