Starlight polarization and CO observations towards the Lupus clouds

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 observ...

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Detalles Bibliográficos
Autores principales: Rizzo, José Ricardo, Morras, Ricardo, Arnal, Edmundo Marcelo
Formato: Articulo
Lenguaje:Inglés
Publicado: 1998
Materias:
Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139772
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139772
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
spellingShingle Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
Rizzo, José Ricardo
Morras, Ricardo
Arnal, Edmundo Marcelo
Starlight polarization and CO observations towards the Lupus clouds
topic_facet Astronomía
Física
polarization
ISM: clouds
dust, extinction
ISM: individual: Lupus
ISM: magnetic fields
radio lines: ISM
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.
format Articulo
Articulo
author Rizzo, José Ricardo
Morras, Ricardo
Arnal, Edmundo Marcelo
author_facet Rizzo, José Ricardo
Morras, Ricardo
Arnal, Edmundo Marcelo
author_sort Rizzo, José Ricardo
title Starlight polarization and CO observations towards the Lupus clouds
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
publishDate 1998
url http://sedici.unlp.edu.ar/handle/10915/139772
work_keys_str_mv AT rizzojosericardo starlightpolarizationandcoobservationstowardsthelupusclouds
AT morrasricardo starlightpolarizationandcoobservationstowardsthelupusclouds
AT arnaledmundomarcelo starlightpolarizationandcoobservationstowardsthelupusclouds
bdutipo_str Repositorios
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