Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys

Autores
Kalberla, P. M. W.; Dedes, L.; Arnal, Edmundo Marcelo; Bajaja, Esteban; Morras, Ricardo; Poeppel, W. G. L.
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a novel approach for a definition of the phase space of the Milky Way HI disk and its associated gaseous halo. We discuss how model and observations can be used to discriminate between disk, disk-halo interface and the more distant halo. The model is applied to the new LAB galactic 21-cm line survey, a joint Leiden/Argentine/Bonn project. This new all-sky survey merges an updated version of the Leiden/Dwingeloo (LDS) survey with southern sky observations from the Instituto Argentino de Radioastronomìa (IAR). The survey was processed in Bonn and is essentially free from stray radiation and spurious instrumental effects. These data give evidence that the cloudy HI disk-halo interface, detected recently by tet{Lockman02} in the inner Galaxy at R ∼ 5 kpc is rather extended. The LAB survey shows numerous prominent filaments and cloudy features that stand out clearly against the Galactic disk reaching distances R ∼ 20 kpc, z ∼ 7 kpc. One particular interesting region at R ∼ 14 kpc, z ∼ 4 kpc was mapped with the Effelsberg telescope. We find isolated cold HI clumps with properties very similar to those in the inner Galaxy. High velocity clouds populate the most distant part in the Milky Way phase space. Compact high column density features are found to be surrounded by diffuse low column density envelopes. Their lower phase space distance suggests some interaction with the Milky Way.
Fil: Kalberla, P. M. W.. Radioastronomisches Institut der Universität Bonn; Alemania
Fil: Dedes, L.. Radioastronomisches Institut der Universität Bonn; Alemania
Fil: Arnal, Edmundo Marcelo. 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
Fil: Bajaja, Esteban. 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
Fil: Morras, Ricardo. 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
Fil: Poeppel, W. G. L.. 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
Materia
Galactic emission
Neutral hydrogen
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:11336/76346
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/76346
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Extra-Planar gas in the Leiden/Argentine/Bonn HI SurveysKalberla, P. M. W.Dedes, L.Arnal, Edmundo MarceloBajaja, EstebanMorras, RicardoPoeppel, W. G. L.Galactic emissionNeutral hydrogenhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a novel approach for a definition of the phase space of the Milky Way HI disk and its associated gaseous halo. We discuss how model and observations can be used to discriminate between disk, disk-halo interface and the more distant halo. The model is applied to the new LAB galactic 21-cm line survey, a joint Leiden/Argentine/Bonn project. This new all-sky survey merges an updated version of the Leiden/Dwingeloo (LDS) survey with southern sky observations from the Instituto Argentino de Radioastronomìa (IAR). The survey was processed in Bonn and is essentially free from stray radiation and spurious instrumental effects. These data give evidence that the cloudy HI disk-halo interface, detected recently by tet{Lockman02} in the inner Galaxy at R ∼ 5 kpc is rather extended. The LAB survey shows numerous prominent filaments and cloudy features that stand out clearly against the Galactic disk reaching distances R ∼ 20 kpc, z ∼ 7 kpc. One particular interesting region at R ∼ 14 kpc, z ∼ 4 kpc was mapped with the Effelsberg telescope. We find isolated cold HI clumps with properties very similar to those in the inner Galaxy. High velocity clouds populate the most distant part in the Milky Way phase space. Compact high column density features are found to be surrounded by diffuse low column density envelopes. Their lower phase space distance suggests some interaction with the Milky Way.Fil: Kalberla, P. M. W.. Radioastronomisches Institut der Universität Bonn; AlemaniaFil: Dedes, L.. Radioastronomisches Institut der Universität Bonn; AlemaniaFil: Arnal, Edmundo Marcelo. 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; ArgentinaFil: Bajaja, Esteban. 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; ArgentinaFil: Morras, Ricardo. 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; ArgentinaFil: Poeppel, W. G. L.. 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; ArgentinaAstronomical Society of the Pacific2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/76346Kalberla, P. M. W.; Dedes, L.; Arnal, Edmundo Marcelo; Bajaja, Esteban; Morras, Ricardo; et al.; Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys; Astronomical Society of the Pacific; ASP Conference Series; 331; 12-2005; 81-851080-7926CONICET DigitalCONICETenginfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:46:21Zoai:ri.conicet.gov.ar:11336/76346instacron: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:34982025-10-22 11:46:22.124CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
title Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
spellingShingle Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
Kalberla, P. M. W.
Galactic emission
Neutral hydrogen
title_short Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
title_full Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
title_fullStr Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
title_full_unstemmed Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
title_sort Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys
dc.creator.none.fl_str_mv Kalberla, P. M. W.
Dedes, L.
Arnal, Edmundo Marcelo
Bajaja, Esteban
Morras, Ricardo
Poeppel, W. G. L.
author Kalberla, P. M. W.
author_facet Kalberla, P. M. W.
Dedes, L.
Arnal, Edmundo Marcelo
Bajaja, Esteban
Morras, Ricardo
Poeppel, W. G. L.
author_role author
author2 Dedes, L.
Arnal, Edmundo Marcelo
Bajaja, Esteban
Morras, Ricardo
Poeppel, W. G. L.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Galactic emission
Neutral hydrogen
topic Galactic emission
Neutral hydrogen
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 a novel approach for a definition of the phase space of the Milky Way HI disk and its associated gaseous halo. We discuss how model and observations can be used to discriminate between disk, disk-halo interface and the more distant halo. The model is applied to the new LAB galactic 21-cm line survey, a joint Leiden/Argentine/Bonn project. This new all-sky survey merges an updated version of the Leiden/Dwingeloo (LDS) survey with southern sky observations from the Instituto Argentino de Radioastronomìa (IAR). The survey was processed in Bonn and is essentially free from stray radiation and spurious instrumental effects. These data give evidence that the cloudy HI disk-halo interface, detected recently by tet{Lockman02} in the inner Galaxy at R ∼ 5 kpc is rather extended. The LAB survey shows numerous prominent filaments and cloudy features that stand out clearly against the Galactic disk reaching distances R ∼ 20 kpc, z ∼ 7 kpc. One particular interesting region at R ∼ 14 kpc, z ∼ 4 kpc was mapped with the Effelsberg telescope. We find isolated cold HI clumps with properties very similar to those in the inner Galaxy. High velocity clouds populate the most distant part in the Milky Way phase space. Compact high column density features are found to be surrounded by diffuse low column density envelopes. Their lower phase space distance suggests some interaction with the Milky Way.
Fil: Kalberla, P. M. W.. Radioastronomisches Institut der Universität Bonn; Alemania
Fil: Dedes, L.. Radioastronomisches Institut der Universität Bonn; Alemania
Fil: Arnal, Edmundo Marcelo. 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
Fil: Bajaja, Esteban. 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
Fil: Morras, Ricardo. 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
Fil: Poeppel, W. G. L.. 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
description We present a novel approach for a definition of the phase space of the Milky Way HI disk and its associated gaseous halo. We discuss how model and observations can be used to discriminate between disk, disk-halo interface and the more distant halo. The model is applied to the new LAB galactic 21-cm line survey, a joint Leiden/Argentine/Bonn project. This new all-sky survey merges an updated version of the Leiden/Dwingeloo (LDS) survey with southern sky observations from the Instituto Argentino de Radioastronomìa (IAR). The survey was processed in Bonn and is essentially free from stray radiation and spurious instrumental effects. These data give evidence that the cloudy HI disk-halo interface, detected recently by tet{Lockman02} in the inner Galaxy at R ∼ 5 kpc is rather extended. The LAB survey shows numerous prominent filaments and cloudy features that stand out clearly against the Galactic disk reaching distances R ∼ 20 kpc, z ∼ 7 kpc. One particular interesting region at R ∼ 14 kpc, z ∼ 4 kpc was mapped with the Effelsberg telescope. We find isolated cold HI clumps with properties very similar to those in the inner Galaxy. High velocity clouds populate the most distant part in the Milky Way phase space. Compact high column density features are found to be surrounded by diffuse low column density envelopes. Their lower phase space distance suggests some interaction with the Milky Way.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
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/11336/76346
Kalberla, P. M. W.; Dedes, L.; Arnal, Edmundo Marcelo; Bajaja, Esteban; Morras, Ricardo; et al.; Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys; Astronomical Society of the Pacific; ASP Conference Series; 331; 12-2005; 81-85
1080-7926
CONICET Digital
CONICET
url http://hdl.handle.net/11336/76346
identifier_str_mv Kalberla, P. M. W.; Dedes, L.; Arnal, Edmundo Marcelo; Bajaja, Esteban; Morras, Ricardo; et al.; Extra-Planar gas in the Leiden/Argentine/Bonn HI Surveys; Astronomical Society of the Pacific; ASP Conference Series; 331; 12-2005; 81-85
1080-7926
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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
application/pdf
dc.publisher.none.fl_str_mv Astronomical Society of the Pacific
publisher.none.fl_str_mv Astronomical Society of the Pacific
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 12.982451

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