Starlight polarization and CO observations towards the Lupus clouds

Autores
Rizzo, José Ricardo; Morras, Ricardo; Arnal, Edmundo Marcelo
Año de publicación
1998
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We performed an observational study of the dark filaments Lupus 1 and Lupus 4 using both polarimetric observations of 190 stars and a sample of 72 12CO profiles towards these clouds. We have estimated lower limits to the distances of Lupus 1 and Lupus 4 (* 140 and * 125 pc, respectively). The observational strategy of the survey allows us to compare the projected magnetic field in an extended area around each cloud with the magnetic field direction observed to prevail along the clouds. Lupus 4 could have collapsed along the magnetic field lines, while in Lupus 1 the magnetic field appears to be less ordered, having the major axis of the filaments parallel to the large-scale projected magnetic field. These differences would imply that both filaments have different pattern evolutions. From the CO observations we have probed the velocity fields of the filaments and the spatial extension of the molecular gas with respect to the dust.
Instituto Argentino de Radioastronomía
Facultad de Ingeniería
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/139772
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/139772
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Starlight polarization and CO observations towards the Lupus cloudsRizzo, José RicardoMorras, RicardoArnal, Edmundo MarceloAstronomíaFísicapolarizationISM: cloudsdust, extinctionISM: individual: LupusISM: magnetic fieldsradio lines: ISMWe performed an observational study of the dark filaments Lupus 1 and Lupus 4 using both polarimetric observations of 190 stars and a sample of 72 12CO profiles towards these clouds. We have estimated lower limits to the distances of Lupus 1 and Lupus 4 (* 140 and * 125 pc, respectively). The observational strategy of the survey allows us to compare the projected magnetic field in an extended area around each cloud with the magnetic field direction observed to prevail along the clouds. Lupus 4 could have collapsed along the magnetic field lines, while in Lupus 1 the magnetic field appears to be less ordered, having the major axis of the filaments parallel to the large-scale projected magnetic field. These differences would imply that both filaments have different pattern evolutions. From the CO observations we have probed the velocity fields of the filaments and the spatial extension of the molecular gas with respect to the dust.Instituto Argentino de RadioastronomíaFacultad de IngenieríaFacultad de Ciencias Astronómicas y Geofísicas1998-10-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf497-510http://sedici.unlp.edu.ar/handle/10915/139772enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/issn/1365-2966info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.1998.01916.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:23:53Zoai:sedici.unlp.edu.ar:10915/139772Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:23:54.171SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Starlight polarization and CO observations towards the Lupus clouds
title Starlight polarization and CO observations towards the Lupus clouds
spellingShingle Starlight polarization and CO observations towards the Lupus clouds
Rizzo, José Ricardo
Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
title_short Starlight polarization and CO observations towards the Lupus clouds
title_full Starlight polarization and CO observations towards the Lupus clouds
title_fullStr Starlight polarization and CO observations towards the Lupus clouds
title_full_unstemmed Starlight polarization and CO observations towards the Lupus clouds
title_sort Starlight polarization and CO observations towards the Lupus clouds
dc.creator.none.fl_str_mv Rizzo, José Ricardo
Morras, Ricardo
Arnal, Edmundo Marcelo
author Rizzo, José Ricardo
author_facet Rizzo, José Ricardo
Morras, Ricardo
Arnal, Edmundo Marcelo
author_role author
author2 Morras, Ricardo
Arnal, Edmundo Marcelo
author2_role author
author
dc.subject.none.fl_str_mv Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
topic Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
dc.description.none.fl_txt_mv We performed an observational study of the dark filaments Lupus 1 and Lupus 4 using both polarimetric observations of 190 stars and a sample of 72 12CO profiles towards these clouds. We have estimated lower limits to the distances of Lupus 1 and Lupus 4 (* 140 and * 125 pc, respectively). The observational strategy of the survey allows us to compare the projected magnetic field in an extended area around each cloud with the magnetic field direction observed to prevail along the clouds. Lupus 4 could have collapsed along the magnetic field lines, while in Lupus 1 the magnetic field appears to be less ordered, having the major axis of the filaments parallel to the large-scale projected magnetic field. These differences would imply that both filaments have different pattern evolutions. From the CO observations we have probed the velocity fields of the filaments and the spatial extension of the molecular gas with respect to the dust.
Instituto Argentino de Radioastronomía
Facultad de Ingeniería
Facultad de Ciencias Astronómicas y Geofísicas
description We performed an observational study of the dark filaments Lupus 1 and Lupus 4 using both polarimetric observations of 190 stars and a sample of 72 12CO profiles towards these clouds. We have estimated lower limits to the distances of Lupus 1 and Lupus 4 (* 140 and * 125 pc, respectively). The observational strategy of the survey allows us to compare the projected magnetic field in an extended area around each cloud with the magnetic field direction observed to prevail along the clouds. Lupus 4 could have collapsed along the magnetic field lines, while in Lupus 1 the magnetic field appears to be less ordered, having the major axis of the filaments parallel to the large-scale projected magnetic field. These differences would imply that both filaments have different pattern evolutions. From the CO observations we have probed the velocity fields of the filaments and the spatial extension of the molecular gas with respect to the dust.
publishDate 1998
dc.date.none.fl_str_mv 1998-10-21
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/139772
url http://sedici.unlp.edu.ar/handle/10915/139772
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/issn/1365-2966
info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.1998.01916.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
497-510
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.22299

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