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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/7730
Ver los metadatos del registro completo
id |
CONICETDig_b2d5774db249898a2a71dfe6827c554a |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/7730 |
network_acronym_str |
CONICETDig |
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 |
_version_ |
1844613833536045056 |
score |
13.070432 |