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dc.contributor.author
Maureira, María José
dc.contributor.author
Arce, Héctor G.
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Offner, Stella S. R.
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Dunham, Michael M.
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Pineda, Jaime E.
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Fernandez Lopez, Manuel
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Chen, Xuepeng
dc.contributor.author
Mardones, Diego
dc.date.available
2018-08-22T14:21:30Z
dc.date.issued
2017-11
dc.identifier.citation
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
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/56518
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Ism: Individual Objects (Per-Bolo 58)
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Stars: Formation
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Stars: Kinematics And Dynamics
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Stars: Low-Mass
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Stars: Protostars
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
A Turbulent Origin for the Complex Envelope Kinematics in the Young Low-mass Core Per-bolo 58
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-13T17:57:32Z
dc.journal.volume
849
dc.journal.number
2
dc.journal.pagination
1-16
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Maureira, María José. University of Yale; Estados Unidos
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Fil: Arce, Héctor G.. University of Yale; Estados Unidos
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Fil: Offner, Stella S. R.. University of Texas at Austin; Estados Unidos
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Fil: Dunham, Michael M.. State University of New York; Estados Unidos
dc.description.fil
Fil: Pineda, Jaime E.. Max Planck Institute for Extraterrestrial Physics; Alemania
dc.description.fil
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
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Fil: Chen, Xuepeng. Chinese Academy of Sciences; República de China
dc.description.fil
Fil: Mardones, Diego. Universidad de Chile; Chile
dc.journal.title
Astrophysical Journal
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.3847/1538-4357/aa91ce
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa91ce/meta
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