A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44

Autores
Paron, Sergio Ariel; Ortega, Martin Eduardo; Rubio, M.; Dubner, Gloria Mabel
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44. The purpose is to explore signatures of star forming activity in this complex region. Methods. We performed a near and mid infrared study towards the border of the HII region G034.8-0.7 and observed a 90×90 region near 18h 56m 48s , +01◦ 18 45(J2000) using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3−2, 13CO J = 3−2, HCO+ J = 4−3 and CS J = 7−6 lines with an angular resolution of 22. Results. Based on the infrared study we propose that the source 2MASS 18564827+0118471 (IR1 in this work) is a YSO candidate. We discovered a bipolar 12CO outflow in the direction of the line of sight and a HCO+ clump towards IR1, confirming that it is a YSO. From the detection of the CS J = 7−6 line we infer the presence of high density (>107 cm−3) and warm (>60 K) gas towards IR1, probably belonging to the protostellar envelope where the YSO is forming. We investigated the possible connection of IR1 with the SNR and the HII region. By comparing the dynamical time of the outflows and the age of the SNR W44, we conclude that the possibility that the SNR triggered the formation of IR1 is unlikely. On the other hand, we suggest that the expansion of the HII region G034.8-0.7 is responsible for the formation of IR1 through the “collect and collapse” process.
Fil: Paron, Sergio Ariel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Ortega, Martin Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Rubio, M.. Universidad de Chile; Chile
Fil: Dubner, Gloria Mabel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Materia
ISM:molecules
ISM:clouds
ISM:jets and outflows
STARS:formation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/21895
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/21895
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44Paron, Sergio ArielOrtega, Martin EduardoRubio, M.Dubner, Gloria MabelISM:moleculesISM:cloudsISM:jets and outflowsSTARS:formationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims. This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44. The purpose is to explore signatures of star forming activity in this complex region. Methods. We performed a near and mid infrared study towards the border of the HII region G034.8-0.7 and observed a 90×90 region near 18h 56m 48s , +01◦ 18 45(J2000) using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3−2, 13CO J = 3−2, HCO+ J = 4−3 and CS J = 7−6 lines with an angular resolution of 22. Results. Based on the infrared study we propose that the source 2MASS 18564827+0118471 (IR1 in this work) is a YSO candidate. We discovered a bipolar 12CO outflow in the direction of the line of sight and a HCO+ clump towards IR1, confirming that it is a YSO. From the detection of the CS J = 7−6 line we infer the presence of high density (>107 cm−3) and warm (>60 K) gas towards IR1, probably belonging to the protostellar envelope where the YSO is forming. We investigated the possible connection of IR1 with the SNR and the HII region. By comparing the dynamical time of the outflows and the age of the SNR W44, we conclude that the possibility that the SNR triggered the formation of IR1 is unlikely. On the other hand, we suggest that the expansion of the HII region G034.8-0.7 is responsible for the formation of IR1 through the “collect and collapse” process.Fil: Paron, Sergio Ariel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Ortega, Martin Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Rubio, M.. Universidad de Chile; ChileFil: Dubner, Gloria Mabel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaEDP Sciences2009-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21895Paron, Sergio Ariel; Ortega, Martin Eduardo; Rubio, M.; Dubner, Gloria Mabel; A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44; EDP Sciences; Astronomy and Astrophysics; 498; 2; 5-2009; 445-4530004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/200811292info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2009/17/aa11292-08/aa11292-08.htmlinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/0902.2333.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:49Zoai:ri.conicet.gov.ar:11336/21895instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:18:49.728CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
title A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
spellingShingle A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
Paron, Sergio Ariel
ISM:molecules
ISM:clouds
ISM:jets and outflows
STARS:formation
title_short A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
title_full A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
title_fullStr A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
title_full_unstemmed A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
title_sort A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44
dc.creator.none.fl_str_mv Paron, Sergio Ariel
Ortega, Martin Eduardo
Rubio, M.
Dubner, Gloria Mabel
author Paron, Sergio Ariel
author_facet Paron, Sergio Ariel
Ortega, Martin Eduardo
Rubio, M.
Dubner, Gloria Mabel
author_role author
author2 Ortega, Martin Eduardo
Rubio, M.
Dubner, Gloria Mabel
author2_role author
author
author
dc.subject.none.fl_str_mv ISM:molecules
ISM:clouds
ISM:jets and outflows
STARS:formation
topic ISM:molecules
ISM:clouds
ISM:jets and outflows
STARS:formation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44. The purpose is to explore signatures of star forming activity in this complex region. Methods. We performed a near and mid infrared study towards the border of the HII region G034.8-0.7 and observed a 90×90 region near 18h 56m 48s , +01◦ 18 45(J2000) using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3−2, 13CO J = 3−2, HCO+ J = 4−3 and CS J = 7−6 lines with an angular resolution of 22. Results. Based on the infrared study we propose that the source 2MASS 18564827+0118471 (IR1 in this work) is a YSO candidate. We discovered a bipolar 12CO outflow in the direction of the line of sight and a HCO+ clump towards IR1, confirming that it is a YSO. From the detection of the CS J = 7−6 line we infer the presence of high density (>107 cm−3) and warm (>60 K) gas towards IR1, probably belonging to the protostellar envelope where the YSO is forming. We investigated the possible connection of IR1 with the SNR and the HII region. By comparing the dynamical time of the outflows and the age of the SNR W44, we conclude that the possibility that the SNR triggered the formation of IR1 is unlikely. On the other hand, we suggest that the expansion of the HII region G034.8-0.7 is responsible for the formation of IR1 through the “collect and collapse” process.
Fil: Paron, Sergio Ariel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Ortega, Martin Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Rubio, M.. Universidad de Chile; Chile
Fil: Dubner, Gloria Mabel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
description Aims. This work aims at investigating the molecular gas component in the vicinity of two young stellar object (YSO) candidates identified at the border of the HII region G034.8-0.7 that is evolving within a molecular cloud shocked by the SNR W44. The purpose is to explore signatures of star forming activity in this complex region. Methods. We performed a near and mid infrared study towards the border of the HII region G034.8-0.7 and observed a 90×90 region near 18h 56m 48s , +01◦ 18 45(J2000) using the Atacama Submillimeter Telescope Experiment (ASTE) in the 12CO J = 3−2, 13CO J = 3−2, HCO+ J = 4−3 and CS J = 7−6 lines with an angular resolution of 22. Results. Based on the infrared study we propose that the source 2MASS 18564827+0118471 (IR1 in this work) is a YSO candidate. We discovered a bipolar 12CO outflow in the direction of the line of sight and a HCO+ clump towards IR1, confirming that it is a YSO. From the detection of the CS J = 7−6 line we infer the presence of high density (>107 cm−3) and warm (>60 K) gas towards IR1, probably belonging to the protostellar envelope where the YSO is forming. We investigated the possible connection of IR1 with the SNR and the HII region. By comparing the dynamical time of the outflows and the age of the SNR W44, we conclude that the possibility that the SNR triggered the formation of IR1 is unlikely. On the other hand, we suggest that the expansion of the HII region G034.8-0.7 is responsible for the formation of IR1 through the “collect and collapse” process.
publishDate 2009
dc.date.none.fl_str_mv 2009-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/21895
Paron, Sergio Ariel; Ortega, Martin Eduardo; Rubio, M.; Dubner, Gloria Mabel; A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44; EDP Sciences; Astronomy and Astrophysics; 498; 2; 5-2009; 445-453
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21895
identifier_str_mv Paron, Sergio Ariel; Ortega, Martin Eduardo; Rubio, M.; Dubner, Gloria Mabel; A molecular outflow revealing star formation activity in the vicinity of the HII region G034.8-0.7 and the SNR W44; EDP Sciences; Astronomy and Astrophysics; 498; 2; 5-2009; 445-453
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/200811292
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2009/17/aa11292-08/aa11292-08.html
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/0902.2333.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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