Triggered star formation in a molecular shell created by a SNR?
- Autores
- Cichowolski, Silvina; Pineault, Serge; Gamen, Roberto Claudio; Arnal, Edmundo Marcelo; Suad, Laura Andrea; Ortega, M. E.
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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-1. 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 Geofísicas
Instituto de Astrofísica de La Plata
Instituto Argentino de Radioastronomía - Materia
-
Ciencias Astronómicas
HII regions
ISM: kinematics and dynamics
ISM: supernova remnants
Stars: formation
Stars: massive - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85058
Ver los metadatos del registro completo
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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:UNLP2025-10-15T11:08:17Zoai: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:13292025-10-15 11:08:17.635SEDICI (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 |
| dc.description.none.fl_txt_mv |
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. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata Instituto Argentino de Radioastronomía |
| 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 |
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2014 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/85058 |
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eng |
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eng |
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