SDC13 infrared dark clouds: Longitudinally collapsing filaments?

Formation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form. In this paper we analyze the density structure and kinematics of a small network of infrared dark filaments, SDC13, observed in both dust continuum and molecular line emis...

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Detalles Bibliográficos
Autores: Peretto, N., Fuller, G. A., André, Ph., Arzoumanian, D., Rivilla, Víctor M., Bardeau, S., Duarte Puertas, S., Guzmán Fernández, J. P., Lenfestey, C., Li, G. -X., Olguin, F. A., Röck, B. R., Villiers, H. de, Williams, F.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/416025
Acceso en línea:http://hdl.handle.net/10261/416025
http://arxiv.org/abs/1311.0203v1
Access Level:acceso abierto
Palabra clave:astro-ph.GA
ISM: clouds
ISM: kinematics and dynamics
ISM: structure
Stars: formation
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repository_id_str
spelling SDC13 infrared dark clouds: Longitudinally collapsing filaments?Peretto, N.Fuller, G. A.André, Ph.Arzoumanian, D.Rivilla, Víctor M.Bardeau, S.Duarte Puertas, S.Guzmán Fernández, J. P.Lenfestey, C.Li, G. -X.Olguin, F. A.Röck, B. R.Villiers, H. deWilliams, F.astro-ph.GAISM: cloudsISM: kinematics and dynamicsISM: structureStars: formationastro-ph.GAFormation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form. In this paper we analyze the density structure and kinematics of a small network of infrared dark filaments, SDC13, observed in both dust continuum and molecular line emission with the IRAM 30m telescope. These observations reveal the presence of 18 compact sources amongst which the two most massive, MM1 and MM2, are located at the intersection point of the parsec-long filaments. The dense gas velocity and velocity dispersion observed along these filaments show smooth, strongly correlated, gradients. We discuss the origin of the SDC13 velocity field in the context of filament longitudinal collapse. We show that the collapse timescale of the SDC13 filaments (from 1 Myr to 4 Myr depending on the model parameters) is consistent with the presence of Class I sources in them, and argue that, on top of bringing more material to the centre of the system, collapse could generate additional kinematic support against local fragmentation, helping the formation of starless super-Jeans cores.We thank the anonymous referee whose report helped improve the quality of this paper. We would like to thank Alvaro Hacar for helping with the MAMBO data reduction. And finally, we want to thank the IRAM 30 m staff for their support during the observing runs. N.P. was partly supported by a CEA/Marie Curie Eurotalents fellowship and benefited from the support of the European Research Council advanced grant ORISTARS (Grant Agreement No. 291294).NoEDP SciencesEuropean Research CouncilConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionapplication/pdfhttp://hdl.handle.net/10261/416025http://arxiv.org/abs/1311.0203v1reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/HE/291294https://doi.org/10.1051/0004-6361/201322172Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4160252026-05-22T06:33:51Z
dc.title.none.fl_str_mv SDC13 infrared dark clouds: Longitudinally collapsing filaments?
title SDC13 infrared dark clouds: Longitudinally collapsing filaments?
spellingShingle SDC13 infrared dark clouds: Longitudinally collapsing filaments?
Peretto, N.
astro-ph.GA
ISM: clouds
ISM: kinematics and dynamics
ISM: structure
Stars: formation
astro-ph.GA
title_short SDC13 infrared dark clouds: Longitudinally collapsing filaments?
title_full SDC13 infrared dark clouds: Longitudinally collapsing filaments?
title_fullStr SDC13 infrared dark clouds: Longitudinally collapsing filaments?
title_full_unstemmed SDC13 infrared dark clouds: Longitudinally collapsing filaments?
title_sort SDC13 infrared dark clouds: Longitudinally collapsing filaments?
dc.creator.none.fl_str_mv Peretto, N.
Fuller, G. A.
André, Ph.
Arzoumanian, D.
Rivilla, Víctor M.
Bardeau, S.
Duarte Puertas, S.
Guzmán Fernández, J. P.
Lenfestey, C.
Li, G. -X.
Olguin, F. A.
Röck, B. R.
Villiers, H. de
Williams, F.
author Peretto, N.
author_facet Peretto, N.
Fuller, G. A.
André, Ph.
Arzoumanian, D.
Rivilla, Víctor M.
Bardeau, S.
Duarte Puertas, S.
Guzmán Fernández, J. P.
Lenfestey, C.
Li, G. -X.
Olguin, F. A.
Röck, B. R.
Villiers, H. de
Williams, F.
author_role author
author2 Fuller, G. A.
André, Ph.
Arzoumanian, D.
Rivilla, Víctor M.
Bardeau, S.
Duarte Puertas, S.
Guzmán Fernández, J. P.
Lenfestey, C.
Li, G. -X.
Olguin, F. A.
Röck, B. R.
Villiers, H. de
Williams, F.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Research Council
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv astro-ph.GA
ISM: clouds
ISM: kinematics and dynamics
ISM: structure
Stars: formation
astro-ph.GA
topic astro-ph.GA
ISM: clouds
ISM: kinematics and dynamics
ISM: structure
Stars: formation
astro-ph.GA
description Formation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form. In this paper we analyze the density structure and kinematics of a small network of infrared dark filaments, SDC13, observed in both dust continuum and molecular line emission with the IRAM 30m telescope. These observations reveal the presence of 18 compact sources amongst which the two most massive, MM1 and MM2, are located at the intersection point of the parsec-long filaments. The dense gas velocity and velocity dispersion observed along these filaments show smooth, strongly correlated, gradients. We discuss the origin of the SDC13 velocity field in the context of filament longitudinal collapse. We show that the collapse timescale of the SDC13 filaments (from 1 Myr to 4 Myr depending on the model parameters) is consistent with the presence of Class I sources in them, and argue that, on top of bringing more material to the centre of the system, collapse could generate additional kinematic support against local fragmentation, helping the formation of starless super-Jeans cores.
publishDate 2013
dc.date.none.fl_str_mv 2013
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/416025
http://arxiv.org/abs/1311.0203v1
url http://hdl.handle.net/10261/416025
http://arxiv.org/abs/1311.0203v1
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/HE/291294
https://doi.org/10.1051/0004-6361/201322172
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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