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dc.contributor.author
Fernandez Lopez, Manuel
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dc.contributor.author
Zapata, L. A.
dc.contributor.author
Gabbasov, R.
dc.date.available
2017-10-13T22:57:40Z
dc.date.issued
2017-08
dc.identifier.citation
Fernandez Lopez, Manuel; Zapata, L. A.; Gabbasov, R.; Strongly misaligned triple system in SR 24 revealed by ALMA; IOP Publishing; Astrophysical Journal; 845; 1; 8-2017; 1-14
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/26683
dc.description.abstract
We report the detection of the 1.3 mm continuum and the molecular emission of the disks of the young triple system SR24 by analyzing ALMA (The Atacama Large Millimeter/Submillimter Array) subarcsecond archival observations. We estimate the mass of the disks (0.025 M ⊙ and 4 × 10‑5 M ⊕ for SR24S and SR24N, respectively) and the dynamical mass of the protostars (1.5 M ⊙ and 1.1 M ⊙). A kinematic model of the SR24S disk to fit its C18O (2-1) emission allows us to develop an observational method to determine the tilt of a rotating and accreting disk. We derive the size, inclination, position angle, and sense of rotation of each disk, finding that they are strongly misaligned (108^circ ) and possibly rotate in opposite directions as seen from Earth, in projection. We compare the ALMA observations with 12CO SMA archival observations, which are more sensitive to extended structures. We find three extended structures and estimate their masses: a molecular bridge joining the disks of the system, a molecular gas reservoir associated with SR24N, and a gas streamer associated with SR24S. Finally, we discuss the possible origin of the misaligned SR24 system, concluding that a closer inspection of the northern gas reservoir is needed to better understand it.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Accretion Disks
dc.subject
Sr24 (Estrella)
dc.subject
Formation of Stars
dc.subject.classification
Otras Ciencias Físicas
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Strongly misaligned triple system in SR 24 revealed by ALMA
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-10-04T14:56:02Z
dc.identifier.eissn
1538-4357
dc.journal.volume
845
dc.journal.number
1
dc.journal.pagination
1-14
dc.journal.pais
Reino Unido
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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. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Zapata, L. A.. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Gabbasov, R.. Universidad Autónoma del Estado de Hidalgo; México
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3847/1538-4357/aa7d51
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/pdf/1707.01128.pdf
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa7d51/meta
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