Episodic molecular outflow in the very young protostellar cluster Serpens South

Autores
Plunkett, Adele L.; Arce, Héctor G.; Mardones, Diego; van Dokkum, Pieter; Dunham, Michael M.; Fernandez Lopez, Manuel; Gallardo, José; Cordero, Stuartt A.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocity and/or in the rate of mass loss. Such `episodic´ ejection events have been observed during the Class 0 protostellar phase (the early accretion stage), and continue during the subsequent class I phase that marks the first one million years of star formation. Previously observed episodic-ejection sources were relatively isolated; however, the most common sites of star formation are clusters. Outflows link protostars with their environment and provide a viable source of turbulence that is necessary for regulating star formation in clusters, but it is not known how an accretion-driven jet or outflow in a clustered environment manifests itself in its earliest stage. This early stage is important in establishing the initial conditions for momentum and energy transfer to the environment as the protostar and cluster evolve. Here we report that an outflow from a very young class 0 protostar, at the hub of the very active and filamentary Serpens South protostellar cluster, shows unambiguous episodic events. The 12CO (J=2-1) emission from the protostar reveals 22 distinct features of outflow ejecta, the most recent having the highest velocity. The outflow forms bipolar lobes --- one of the first detectable signs of star formation --- which originate from the peak of 1-mm continuum emission. Emission from the surrounding C18O envelope shows kinematics consistent with rotation and an infall of material onto the protostar. The data suggest that episodic accretion-driven outflow begins in the earliest phase of protostellar evolution, and that the outflow remains intact in a very clustered environment, probably providing efficient momentum transfer for driving turbulence. 
Fil: Plunkett, Adele L. . Yale University. Astronomy Department.; Estados Unidos
Fil: Arce, Héctor G.. Yale University. Astronomy Department.; Estados Unidos
Fil: Mardones, Diego . Universidad de Chile. Departamento de Astronomía; Chile
Fil: van Dokkum, Pieter . Yale University. Astronomy Department.; Estados Unidos
Fil: Dunham, Michael M. . Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Fernandez Lopez, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina
Fil: Gallardo, José. Joint ALMA Observatory; Chile
Fil: Cordero, Stuartt A. . Joint ALMA Observatory; Chile
Materia
Serpens South
Mass Loss
Protostars
Mass Accretion
Episodic Outflows
Pre-Main Sequence (Stars)
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:11336/7730

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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Episodic molecular outflow in the very young protostellar cluster Serpens SouthPlunkett, Adele L. Arce, Héctor G.Mardones, Diego van Dokkum, Pieter Dunham, Michael M. Fernandez Lopez, ManuelGallardo, JoséCordero, Stuartt A. Serpens SouthMass LossProtostarsMass AccretionEpisodic OutflowsPre-Main Sequence (Stars)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocity and/or in the rate of mass loss. Such `episodic´ ejection events have been observed during the Class 0 protostellar phase (the early accretion stage), and continue during the subsequent class I phase that marks the first one million years of star formation. Previously observed episodic-ejection sources were relatively isolated; however, the most common sites of star formation are clusters. Outflows link protostars with their environment and provide a viable source of turbulence that is necessary for regulating star formation in clusters, but it is not known how an accretion-driven jet or outflow in a clustered environment manifests itself in its earliest stage. This early stage is important in establishing the initial conditions for momentum and energy transfer to the environment as the protostar and cluster evolve. Here we report that an outflow from a very young class 0 protostar, at the hub of the very active and filamentary Serpens South protostellar cluster, shows unambiguous episodic events. The 12CO (J=2-1) emission from the protostar reveals 22 distinct features of outflow ejecta, the most recent having the highest velocity. The outflow forms bipolar lobes --- one of the first detectable signs of star formation --- which originate from the peak of 1-mm continuum emission. Emission from the surrounding C18O envelope shows kinematics consistent with rotation and an infall of material onto the protostar. The data suggest that episodic accretion-driven outflow begins in the earliest phase of protostellar evolution, and that the outflow remains intact in a very clustered environment, probably providing efficient momentum transfer for driving turbulence. Fil: Plunkett, Adele L. . Yale University. Astronomy Department.; Estados UnidosFil: Arce, Héctor G.. Yale University. Astronomy Department.; Estados UnidosFil: Mardones, Diego . Universidad de Chile. Departamento de Astronomía; ChileFil: van Dokkum, Pieter . Yale University. Astronomy Department.; Estados UnidosFil: Dunham, Michael M. . Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Fernandez Lopez, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); ArgentinaFil: Gallardo, José. Joint ALMA Observatory; ChileFil: Cordero, Stuartt A. . Joint ALMA Observatory; ChileNature Publishing Group2015-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7730Plunkett, Adele L. ; Arce, Héctor G.; Mardones, Diego ; van Dokkum, Pieter ; Dunham, Michael M. ; et al.; Episodic molecular outflow in the very young protostellar cluster Serpens South; Nature Publishing Group; Nature; 527; 7576; 11-2015; 70–730028-0836enginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/nature/journal/v527/n7576/full/nature15702.htmlinfo:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1511.01100info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:02:40Zoai:ri.conicet.gov.ar:11336/7730instacron: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 10:02:41.039CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Episodic molecular outflow in the very young protostellar cluster Serpens South
title Episodic molecular outflow in the very young protostellar cluster Serpens South
spellingShingle Episodic molecular outflow in the very young protostellar cluster Serpens South
Plunkett, Adele L.
Serpens South
Mass Loss
Protostars
Mass Accretion
Episodic Outflows
Pre-Main Sequence (Stars)
title_short Episodic molecular outflow in the very young protostellar cluster Serpens South
title_full Episodic molecular outflow in the very young protostellar cluster Serpens South
title_fullStr Episodic molecular outflow in the very young protostellar cluster Serpens South
title_full_unstemmed Episodic molecular outflow in the very young protostellar cluster Serpens South
title_sort Episodic molecular outflow in the very young protostellar cluster Serpens South
dc.creator.none.fl_str_mv Plunkett, Adele L.
Arce, Héctor G.
Mardones, Diego
van Dokkum, Pieter
Dunham, Michael M.
Fernandez Lopez, Manuel
Gallardo, José
Cordero, Stuartt A.
author Plunkett, Adele L.
author_facet Plunkett, Adele L.
Arce, Héctor G.
Mardones, Diego
van Dokkum, Pieter
Dunham, Michael M.
Fernandez Lopez, Manuel
Gallardo, José
Cordero, Stuartt A.
author_role author
author2 Arce, Héctor G.
Mardones, Diego
van Dokkum, Pieter
Dunham, Michael M.
Fernandez Lopez, Manuel
Gallardo, José
Cordero, Stuartt A.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Serpens South
Mass Loss
Protostars
Mass Accretion
Episodic Outflows
Pre-Main Sequence (Stars)
topic Serpens South
Mass Loss
Protostars
Mass Accretion
Episodic Outflows
Pre-Main Sequence (Stars)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocity and/or in the rate of mass loss. Such `episodic´ ejection events have been observed during the Class 0 protostellar phase (the early accretion stage), and continue during the subsequent class I phase that marks the first one million years of star formation. Previously observed episodic-ejection sources were relatively isolated; however, the most common sites of star formation are clusters. Outflows link protostars with their environment and provide a viable source of turbulence that is necessary for regulating star formation in clusters, but it is not known how an accretion-driven jet or outflow in a clustered environment manifests itself in its earliest stage. This early stage is important in establishing the initial conditions for momentum and energy transfer to the environment as the protostar and cluster evolve. Here we report that an outflow from a very young class 0 protostar, at the hub of the very active and filamentary Serpens South protostellar cluster, shows unambiguous episodic events. The 12CO (J=2-1) emission from the protostar reveals 22 distinct features of outflow ejecta, the most recent having the highest velocity. The outflow forms bipolar lobes --- one of the first detectable signs of star formation --- which originate from the peak of 1-mm continuum emission. Emission from the surrounding C18O envelope shows kinematics consistent with rotation and an infall of material onto the protostar. The data suggest that episodic accretion-driven outflow begins in the earliest phase of protostellar evolution, and that the outflow remains intact in a very clustered environment, probably providing efficient momentum transfer for driving turbulence. 
Fil: Plunkett, Adele L. . Yale University. Astronomy Department.; Estados Unidos
Fil: Arce, Héctor G.. Yale University. Astronomy Department.; Estados Unidos
Fil: Mardones, Diego . Universidad de Chile. Departamento de Astronomía; Chile
Fil: van Dokkum, Pieter . Yale University. Astronomy Department.; Estados Unidos
Fil: Dunham, Michael M. . Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Fernandez Lopez, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina
Fil: Gallardo, José. Joint ALMA Observatory; Chile
Fil: Cordero, Stuartt A. . Joint ALMA Observatory; Chile
description The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocity and/or in the rate of mass loss. Such `episodic´ ejection events have been observed during the Class 0 protostellar phase (the early accretion stage), and continue during the subsequent class I phase that marks the first one million years of star formation. Previously observed episodic-ejection sources were relatively isolated; however, the most common sites of star formation are clusters. Outflows link protostars with their environment and provide a viable source of turbulence that is necessary for regulating star formation in clusters, but it is not known how an accretion-driven jet or outflow in a clustered environment manifests itself in its earliest stage. This early stage is important in establishing the initial conditions for momentum and energy transfer to the environment as the protostar and cluster evolve. Here we report that an outflow from a very young class 0 protostar, at the hub of the very active and filamentary Serpens South protostellar cluster, shows unambiguous episodic events. The 12CO (J=2-1) emission from the protostar reveals 22 distinct features of outflow ejecta, the most recent having the highest velocity. The outflow forms bipolar lobes --- one of the first detectable signs of star formation --- which originate from the peak of 1-mm continuum emission. Emission from the surrounding C18O envelope shows kinematics consistent with rotation and an infall of material onto the protostar. The data suggest that episodic accretion-driven outflow begins in the earliest phase of protostellar evolution, and that the outflow remains intact in a very clustered environment, probably providing efficient momentum transfer for driving turbulence. 
publishDate 2015
dc.date.none.fl_str_mv 2015-11
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/11336/7730
Plunkett, Adele L. ; Arce, Héctor G.; Mardones, Diego ; van Dokkum, Pieter ; Dunham, Michael M. ; et al.; Episodic molecular outflow in the very young protostellar cluster Serpens South; Nature Publishing Group; Nature; 527; 7576; 11-2015; 70–73
0028-0836
url http://hdl.handle.net/11336/7730
identifier_str_mv Plunkett, Adele L. ; Arce, Héctor G.; Mardones, Diego ; van Dokkum, Pieter ; Dunham, Michael M. ; et al.; Episodic molecular outflow in the very young protostellar cluster Serpens South; Nature Publishing Group; Nature; 527; 7576; 11-2015; 70–73
0028-0836
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/nature/journal/v527/n7576/full/nature15702.html
info:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1511.01100
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
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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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