A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58
- Autores
- Maureira, María José; Arce, Héctor G.; Offner, Stella S. R.; Dunham, Michael M.; Pineda, Jaime E.; Fernandez Lopez, Manuel; Chen, Xuepeng; Mardones, Diego
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We use CARMA 3 mm continuum and molecular lines (NH2D, N2H+, HCO+, HCN, and CS) at ∼1000 au resolution to characterize the structure and kinematics of the envelope surrounding the deeply embedded first core candidate Per-bolo 58. The line profile of the observed species shows two distinct peaks separated by 0.4-0.6 km s-1, which most likely arise from two different optically thin velocity components rather than the product of self-absorption in an optically thick line. The two velocity components, each with a mass of ∼0.5-0.6 , overlap spatially at the position of the continuum emission and produce a general gradient along the outflow direction. We investigate whether these observations are consistent with infall in a turbulent and magnetized envelope. We compare the morphology and spectra of the N2H+ (1-0) with synthetic observations of an MHD simulation that considers the collapse of an isolated core that is initially perturbed with a turbulent field. The proposed model matches the data in the production of two velocity components, traced by the isolated hyperfine line of the N2H+ (1-0) spectra, and shows a general agreement in morphology and velocity field. We also use large maps of the region to compare the kinematics of the core with that of the surrounding large-scale filamentary structure and find that accretion from the large-scale filament could also explain the complex kinematics exhibited by this young dense core.
Fil: Maureira, María José. University of Yale; Estados Unidos
Fil: Arce, Héctor G.. University of Yale; Estados Unidos
Fil: Offner, Stella S. R.. University of Texas at Austin; Estados Unidos
Fil: Dunham, Michael M.. State University of New York; Estados Unidos
Fil: Pineda, Jaime E.. Max Planck Institute for Extraterrestrial Physics; Alemania
Fil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Chen, Xuepeng. Chinese Academy of Sciences; República de China
Fil: Mardones, Diego. Universidad de Chile; Chile - Materia
-
ISM: INDIVIDUAL OBJECTS (PER-BOLO 58)
STARS: FORMATION
STARS: KINEMATICS AND DYNAMICS
STARS: LOW-MASS
STARS: PROTOSTARS - 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:11336/56518
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oai:ri.conicet.gov.ar:11336/56518 |
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CONICET Digital (CONICET) |
spelling |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58Maureira, María JoséArce, Héctor G.Offner, Stella S. R.Dunham, Michael M.Pineda, Jaime E.Fernandez Lopez, ManuelChen, XuepengMardones, DiegoISM: INDIVIDUAL OBJECTS (PER-BOLO 58)STARS: FORMATIONSTARS: KINEMATICS AND DYNAMICSSTARS: LOW-MASSSTARS: PROTOSTARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We use CARMA 3 mm continuum and molecular lines (NH2D, N2H+, HCO+, HCN, and CS) at ∼1000 au resolution to characterize the structure and kinematics of the envelope surrounding the deeply embedded first core candidate Per-bolo 58. The line profile of the observed species shows two distinct peaks separated by 0.4-0.6 km s-1, which most likely arise from two different optically thin velocity components rather than the product of self-absorption in an optically thick line. The two velocity components, each with a mass of ∼0.5-0.6 , overlap spatially at the position of the continuum emission and produce a general gradient along the outflow direction. We investigate whether these observations are consistent with infall in a turbulent and magnetized envelope. We compare the morphology and spectra of the N2H+ (1-0) with synthetic observations of an MHD simulation that considers the collapse of an isolated core that is initially perturbed with a turbulent field. The proposed model matches the data in the production of two velocity components, traced by the isolated hyperfine line of the N2H+ (1-0) spectra, and shows a general agreement in morphology and velocity field. We also use large maps of the region to compare the kinematics of the core with that of the surrounding large-scale filamentary structure and find that accretion from the large-scale filament could also explain the complex kinematics exhibited by this young dense core.Fil: Maureira, María José. University of Yale; Estados UnidosFil: Arce, Héctor G.. University of Yale; Estados UnidosFil: Offner, Stella S. R.. University of Texas at Austin; Estados UnidosFil: Dunham, Michael M.. State University of New York; Estados UnidosFil: Pineda, Jaime E.. Max Planck Institute for Extraterrestrial Physics; AlemaniaFil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Chen, Xuepeng. Chinese Academy of Sciences; República de ChinaFil: Mardones, Diego. Universidad de Chile; ChileIOP Publishing2017-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/56518Maureira, María José; Arce, Héctor G.; Offner, Stella S. R.; Dunham, Michael M.; Pineda, Jaime E.; et al.; A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58; IOP Publishing; Astrophysical Journal; 849; 2; 11-2017; 1-160004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa91ceinfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa91ce/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:32:22Zoai:ri.conicet.gov.ar:11336/56518instacron: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 10:32:22.293CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
title |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
spellingShingle |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 Maureira, María José ISM: INDIVIDUAL OBJECTS (PER-BOLO 58) STARS: FORMATION STARS: KINEMATICS AND DYNAMICS STARS: LOW-MASS STARS: PROTOSTARS |
title_short |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
title_full |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
title_fullStr |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
title_full_unstemmed |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
title_sort |
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58 |
dc.creator.none.fl_str_mv |
Maureira, María José Arce, Héctor G. Offner, Stella S. R. Dunham, Michael M. Pineda, Jaime E. Fernandez Lopez, Manuel Chen, Xuepeng Mardones, Diego |
author |
Maureira, María José |
author_facet |
Maureira, María José Arce, Héctor G. Offner, Stella S. R. Dunham, Michael M. Pineda, Jaime E. Fernandez Lopez, Manuel Chen, Xuepeng Mardones, Diego |
author_role |
author |
author2 |
Arce, Héctor G. Offner, Stella S. R. Dunham, Michael M. Pineda, Jaime E. Fernandez Lopez, Manuel Chen, Xuepeng Mardones, Diego |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
ISM: INDIVIDUAL OBJECTS (PER-BOLO 58) STARS: FORMATION STARS: KINEMATICS AND DYNAMICS STARS: LOW-MASS STARS: PROTOSTARS |
topic |
ISM: INDIVIDUAL OBJECTS (PER-BOLO 58) STARS: FORMATION STARS: KINEMATICS AND DYNAMICS STARS: LOW-MASS STARS: PROTOSTARS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We use CARMA 3 mm continuum and molecular lines (NH2D, N2H+, HCO+, HCN, and CS) at ∼1000 au resolution to characterize the structure and kinematics of the envelope surrounding the deeply embedded first core candidate Per-bolo 58. The line profile of the observed species shows two distinct peaks separated by 0.4-0.6 km s-1, which most likely arise from two different optically thin velocity components rather than the product of self-absorption in an optically thick line. The two velocity components, each with a mass of ∼0.5-0.6 , overlap spatially at the position of the continuum emission and produce a general gradient along the outflow direction. We investigate whether these observations are consistent with infall in a turbulent and magnetized envelope. We compare the morphology and spectra of the N2H+ (1-0) with synthetic observations of an MHD simulation that considers the collapse of an isolated core that is initially perturbed with a turbulent field. The proposed model matches the data in the production of two velocity components, traced by the isolated hyperfine line of the N2H+ (1-0) spectra, and shows a general agreement in morphology and velocity field. We also use large maps of the region to compare the kinematics of the core with that of the surrounding large-scale filamentary structure and find that accretion from the large-scale filament could also explain the complex kinematics exhibited by this young dense core. Fil: Maureira, María José. University of Yale; Estados Unidos Fil: Arce, Héctor G.. University of Yale; Estados Unidos Fil: Offner, Stella S. R.. University of Texas at Austin; Estados Unidos Fil: Dunham, Michael M.. State University of New York; Estados Unidos Fil: Pineda, Jaime E.. Max Planck Institute for Extraterrestrial Physics; Alemania Fil: Fernandez Lopez, Manuel. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina Fil: Chen, Xuepeng. Chinese Academy of Sciences; República de China Fil: Mardones, Diego. Universidad de Chile; Chile |
description |
We use CARMA 3 mm continuum and molecular lines (NH2D, N2H+, HCO+, HCN, and CS) at ∼1000 au resolution to characterize the structure and kinematics of the envelope surrounding the deeply embedded first core candidate Per-bolo 58. The line profile of the observed species shows two distinct peaks separated by 0.4-0.6 km s-1, which most likely arise from two different optically thin velocity components rather than the product of self-absorption in an optically thick line. The two velocity components, each with a mass of ∼0.5-0.6 , overlap spatially at the position of the continuum emission and produce a general gradient along the outflow direction. We investigate whether these observations are consistent with infall in a turbulent and magnetized envelope. We compare the morphology and spectra of the N2H+ (1-0) with synthetic observations of an MHD simulation that considers the collapse of an isolated core that is initially perturbed with a turbulent field. The proposed model matches the data in the production of two velocity components, traced by the isolated hyperfine line of the N2H+ (1-0) spectra, and shows a general agreement in morphology and velocity field. We also use large maps of the region to compare the kinematics of the core with that of the surrounding large-scale filamentary structure and find that accretion from the large-scale filament could also explain the complex kinematics exhibited by this young dense core. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11 |
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/11336/56518 Maureira, María José; Arce, Héctor G.; Offner, Stella S. R.; Dunham, Michael M.; Pineda, Jaime E.; et al.; A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58; IOP Publishing; Astrophysical Journal; 849; 2; 11-2017; 1-16 0004-637X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/56518 |
identifier_str_mv |
Maureira, María José; Arce, Héctor G.; Offner, Stella S. R.; Dunham, Michael M.; Pineda, Jaime E.; et al.; A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58; IOP Publishing; Astrophysical Journal; 849; 2; 11-2017; 1-16 0004-637X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa91ce info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa91ce/meta |
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 |
IOP Publishing |
publisher.none.fl_str_mv |
IOP Publishing |
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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1844614337241546752 |
score |
13.070432 |