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dc.contributor.author
Persi, P.
dc.contributor.author
Tapia, M.
dc.contributor.author
Gomez, Mercedes Nieves
dc.contributor.author
Roth, M.
dc.contributor.author
Marenzi, A. R.
dc.date.available
2024-08-07T11:09:13Z
dc.date.issued
2005-02
dc.identifier.citation
Persi, P.; Tapia, M.; Gomez, Mercedes Nieves; Roth, M.; Marenzi, A. R.; The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?; EDP Sciences; Astronomy and Astrophysics; 431; 2; 2-2005; 539-545
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/241950
dc.description.abstract
We present deep IJHKs and H_2 images of a region in the Chamaeleon I dark cloud containing the very low-mass young object [KG2001]102, in an attempt to search for multiplicity and molecular outflow in the vicinity of this object. No low-velocity shocked structures were detected in our H_2 image. The broad-band and narrow-band images show that [KG2001]102 is composed of four objects within a radius of about 2 arcsec. The brightest component [KG2001]102 A shows near-IR excess emission and its mass is estimated to be in the range 33 to 55 M_Jup, depending on which model is adopted. Red spectra were obtained of the two fainter components B and C. The spectrum of the former suggests a K7V spectral type while the spectrum of component C is too noisy to allow a reliable classification but rules out a late M-type. The three faint components (B, C and D) have IJHK colors that suggest a much later spectral type, with extinctions similar to other members of the cloud. The computed probability of randomly finding a pair of field stars like [KG2001]102 AB is 1.5 × 10-3 while for a triple optical system like [KG2001]102 ABC, it would be 3.8 × 10-5 and more than an order of magnitude lower for finding a quadruple system like this by chance projection.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
STARS: LOW MASS
dc.subject
BROWN DWARFS
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STARS: FORMATION
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INFRARED: STARS
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-06T11:17:55Z
dc.journal.volume
431
dc.journal.number
2
dc.journal.pagination
539-545
dc.journal.pais
Francia
dc.journal.ciudad
Paris
dc.description.fil
Fil: Persi, P.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
dc.description.fil
Fil: Tapia, M.. Universidad Nacional Autónoma de México. Instituto de Astronomía; México
dc.description.fil
Fil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
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Fil: Roth, M.. Carnegie Institution of Washington; Estados Unidos
dc.description.fil
Fil: Marenzi, A. R.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2005/08/aa1459/aa1459.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:20041459
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