The molecular environment of the pillar-like features in the H ii region G46.5–0.2
- Autores
- Paron, Sergio Ariel; Celis Peña, Mariela Fernanda; Ortega, Martin Eduardo; Fariña, Cecilia Silvia; Petriella, Alberto; Rubio, M.; Ashley, R. P.
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- At the interface of HII regions and molecular gas, peculiar structuresappear, some of them with pillar-like shapes. Understanding their originis important for characterizing triggered star formation and the impactof massive stars on the interstellar medium. In order to study themolecular environment and influence of radiation on two pillar-likefeatures related to the H ii region G46.5-0.2, we performed molecularline observations with the Atacama Submillimeter Telescope Experimentand spectroscopic optical observations with the Isaac Newton Telescope.From the optical observations, we identified the star that is excitingthe H ii region as spectral type O4-6. The molecular data allowed us tostudy the structure of the pillars and an HCO+ cloud lyingbetween them. In this HCO+ cloud, which has no well-defined12CO counterpart, we found direct evidence of star formation:two molecular outflows and two associated near-IR nebulosities. Theoutflow axis orientation is perpendicular to the direction of theradiation flow from the HII region. Several Class I sources are alsoembedded in this HCO+ cloud, showing that it is usual thatyoung stellar objects (YSOs) form large associations occupying a cavitybounded by pillars. On the other hand, it was confirmed that theradiation-driven implosion (RDI) process is not occurring in one of thepillar tips.
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: Celis Peña, Mariela Fernanda. 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: Fariña, Cecilia Silvia. Isaac Newton Group Of Telescopes, Las Palmas, Iac; España
Fil: Petriella, Alberto. 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.. Departamento de Astronomía, Universidad de Chile; Chile
Fil: Ashley, R. P.. University Of Warwick; Reino Unido - Materia
-
(ISM:) HII REGIONS
(ISM): PHOTODISSOCIATION REGION (PDR)
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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/45865
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3498 |
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The molecular environment of the pillar-like features in the H ii region G46.5–0.2Paron, Sergio ArielCelis Peña, Mariela FernandaOrtega, Martin EduardoFariña, Cecilia SilviaPetriella, AlbertoRubio, M.Ashley, R. P.(ISM:) HII REGIONS(ISM): PHOTODISSOCIATION REGION (PDR)ISM: JETS AND OUTFLOWSSTARS: FORMATIONAt the interface of HII regions and molecular gas, peculiar structuresappear, some of them with pillar-like shapes. Understanding their originis important for characterizing triggered star formation and the impactof massive stars on the interstellar medium. In order to study themolecular environment and influence of radiation on two pillar-likefeatures related to the H ii region G46.5-0.2, we performed molecularline observations with the Atacama Submillimeter Telescope Experimentand spectroscopic optical observations with the Isaac Newton Telescope.From the optical observations, we identified the star that is excitingthe H ii region as spectral type O4-6. The molecular data allowed us tostudy the structure of the pillars and an HCO<sup>+</sup> cloud lyingbetween them. In this HCO<sup>+</sup> cloud, which has no well-defined<sup>12</sup>CO counterpart, we found direct evidence of star formation:two molecular outflows and two associated near-IR nebulosities. Theoutflow axis orientation is perpendicular to the direction of theradiation flow from the HII region. Several Class I sources are alsoembedded in this HCO<sup>+</sup> cloud, showing that it is usual thatyoung stellar objects (YSOs) form large associations occupying a cavitybounded by pillars. On the other hand, it was confirmed that theradiation-driven implosion (RDI) process is not occurring in one of thepillar tips.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: Celis Peña, Mariela Fernanda. 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: Fariña, Cecilia Silvia. Isaac Newton Group Of Telescopes, Las Palmas, Iac; EspañaFil: Petriella, Alberto. 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.. Departamento de Astronomía, Universidad de Chile; ChileFil: Ashley, R. P.. University Of Warwick; Reino UnidoWiley Blackwell Publishing, Inc2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/45865Paron, Sergio Ariel; Celis Peña, Mariela Fernanda; Ortega, Martin Eduardo; Fariña, Cecilia Silvia; Petriella, Alberto; et al.; The molecular environment of the pillar-like features in the H ii region G46.5–0.2; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 470; 4; 10-2017; 4662-46700035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx1486info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx1486info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:42:57Zoai:ri.conicet.gov.ar:11336/45865instacron: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:34982025-10-22 11:42:57.665CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
title |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
spellingShingle |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 Paron, Sergio Ariel (ISM:) HII REGIONS (ISM): PHOTODISSOCIATION REGION (PDR) ISM: JETS AND OUTFLOWS STARS: FORMATION |
title_short |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
title_full |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
title_fullStr |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
title_full_unstemmed |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
title_sort |
The molecular environment of the pillar-like features in the H ii region G46.5–0.2 |
dc.creator.none.fl_str_mv |
Paron, Sergio Ariel Celis Peña, Mariela Fernanda Ortega, Martin Eduardo Fariña, Cecilia Silvia Petriella, Alberto Rubio, M. Ashley, R. P. |
author |
Paron, Sergio Ariel |
author_facet |
Paron, Sergio Ariel Celis Peña, Mariela Fernanda Ortega, Martin Eduardo Fariña, Cecilia Silvia Petriella, Alberto Rubio, M. Ashley, R. P. |
author_role |
author |
author2 |
Celis Peña, Mariela Fernanda Ortega, Martin Eduardo Fariña, Cecilia Silvia Petriella, Alberto Rubio, M. Ashley, R. P. |
author2_role |
author author author author author author |
dc.subject.none.fl_str_mv |
(ISM:) HII REGIONS (ISM): PHOTODISSOCIATION REGION (PDR) ISM: JETS AND OUTFLOWS STARS: FORMATION |
topic |
(ISM:) HII REGIONS (ISM): PHOTODISSOCIATION REGION (PDR) ISM: JETS AND OUTFLOWS STARS: FORMATION |
dc.description.none.fl_txt_mv |
At the interface of HII regions and molecular gas, peculiar structuresappear, some of them with pillar-like shapes. Understanding their originis important for characterizing triggered star formation and the impactof massive stars on the interstellar medium. In order to study themolecular environment and influence of radiation on two pillar-likefeatures related to the H ii region G46.5-0.2, we performed molecularline observations with the Atacama Submillimeter Telescope Experimentand spectroscopic optical observations with the Isaac Newton Telescope.From the optical observations, we identified the star that is excitingthe H ii region as spectral type O4-6. The molecular data allowed us tostudy the structure of the pillars and an HCO<sup>+</sup> cloud lyingbetween them. In this HCO<sup>+</sup> cloud, which has no well-defined<sup>12</sup>CO counterpart, we found direct evidence of star formation:two molecular outflows and two associated near-IR nebulosities. Theoutflow axis orientation is perpendicular to the direction of theradiation flow from the HII region. Several Class I sources are alsoembedded in this HCO<sup>+</sup> cloud, showing that it is usual thatyoung stellar objects (YSOs) form large associations occupying a cavitybounded by pillars. On the other hand, it was confirmed that theradiation-driven implosion (RDI) process is not occurring in one of thepillar tips. 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: Celis Peña, Mariela Fernanda. 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: Fariña, Cecilia Silvia. Isaac Newton Group Of Telescopes, Las Palmas, Iac; España Fil: Petriella, Alberto. 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.. Departamento de Astronomía, Universidad de Chile; Chile Fil: Ashley, R. P.. University Of Warwick; Reino Unido |
description |
At the interface of HII regions and molecular gas, peculiar structuresappear, some of them with pillar-like shapes. Understanding their originis important for characterizing triggered star formation and the impactof massive stars on the interstellar medium. In order to study themolecular environment and influence of radiation on two pillar-likefeatures related to the H ii region G46.5-0.2, we performed molecularline observations with the Atacama Submillimeter Telescope Experimentand spectroscopic optical observations with the Isaac Newton Telescope.From the optical observations, we identified the star that is excitingthe H ii region as spectral type O4-6. The molecular data allowed us tostudy the structure of the pillars and an HCO<sup>+</sup> cloud lyingbetween them. In this HCO<sup>+</sup> cloud, which has no well-defined<sup>12</sup>CO counterpart, we found direct evidence of star formation:two molecular outflows and two associated near-IR nebulosities. Theoutflow axis orientation is perpendicular to the direction of theradiation flow from the HII region. Several Class I sources are alsoembedded in this HCO<sup>+</sup> cloud, showing that it is usual thatyoung stellar objects (YSOs) form large associations occupying a cavitybounded by pillars. On the other hand, it was confirmed that theradiation-driven implosion (RDI) process is not occurring in one of thepillar tips. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10 |
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/11336/45865 Paron, Sergio Ariel; Celis Peña, Mariela Fernanda; Ortega, Martin Eduardo; Fariña, Cecilia Silvia; Petriella, Alberto; et al.; The molecular environment of the pillar-like features in the H ii region G46.5–0.2; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 470; 4; 10-2017; 4662-4670 0035-8711 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/45865 |
identifier_str_mv |
Paron, Sergio Ariel; Celis Peña, Mariela Fernanda; Ortega, Martin Eduardo; Fariña, Cecilia Silvia; Petriella, Alberto; et al.; The molecular environment of the pillar-like features in the H ii region G46.5–0.2; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 470; 4; 10-2017; 4662-4670 0035-8711 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx1486 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx1486 |
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 |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
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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1846782119137771520 |
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12.982451 |