The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?

Autores
Persi, P.; Tapia, M.; Gomez, Mercedes Nieves; Roth, M.; Marenzi, A. R.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Persi, P.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
Fil: Tapia, M.. Universidad Nacional Autónoma de México. Instituto de Astronomía; México
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
Fil: Roth, M.. Carnegie Institution of Washington; Estados Unidos
Fil: Marenzi, A. R.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
Materia
STARS: LOW MASS
BROWN DWARFS
STARS: FORMATION
INFRARED: STARS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/241950
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?Persi, P.Tapia, M.Gomez, Mercedes NievesRoth, M.Marenzi, A. R.STARS: LOW MASSBROWN DWARFSSTARS: FORMATIONINFRARED: STARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We 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.Fil: Persi, P.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; ItaliaFil: Tapia, M.. Universidad Nacional Autónoma de México. Instituto de Astronomía; MéxicoFil: Gomez, Mercedes Nieves. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Roth, M.. Carnegie Institution of Washington; Estados UnidosFil: Marenzi, A. R.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; ItaliaEDP Sciences2005-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241950Persi, 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; 539-5450004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2005/08/aa1459/aa1459.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041459info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:01Zoai:ri.conicet.gov.ar:11336/241950instacron: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 09:43:01.803CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
title The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
spellingShingle The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
Persi, P.
STARS: LOW MASS
BROWN DWARFS
STARS: FORMATION
INFRARED: STARS
title_short The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
title_full The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
title_fullStr The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
title_full_unstemmed The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
title_sort The enigmatic brown dwarf candidate [KG2001] 102 in the Chamaeleon I cloud: Is it a multiple system?
dc.creator.none.fl_str_mv Persi, P.
Tapia, M.
Gomez, Mercedes Nieves
Roth, M.
Marenzi, A. R.
author Persi, P.
author_facet Persi, P.
Tapia, M.
Gomez, Mercedes Nieves
Roth, M.
Marenzi, A. R.
author_role author
author2 Tapia, M.
Gomez, Mercedes Nieves
Roth, M.
Marenzi, A. R.
author2_role author
author
author
author
dc.subject.none.fl_str_mv STARS: LOW MASS
BROWN DWARFS
STARS: FORMATION
INFRARED: STARS
topic STARS: LOW MASS
BROWN DWARFS
STARS: FORMATION
INFRARED: STARS
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 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.
Fil: Persi, P.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
Fil: Tapia, M.. Universidad Nacional Autónoma de México. Instituto de Astronomía; México
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
Fil: Roth, M.. Carnegie Institution of Washington; Estados Unidos
Fil: Marenzi, A. R.. Centre National de la Recherche Scientifique; Francia. Istituto Astrofisica Spaziale e Fisica Cosmica; Italia
description 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.
publishDate 2005
dc.date.none.fl_str_mv 2005-02
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/11336/241950
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
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/241950
identifier_str_mv 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
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2005/08/aa1459/aa1459.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041459
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 EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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score 13.070432

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