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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/76346
Ver los metadatos del registro completo
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3498 |
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CONICET Digital (CONICET) |
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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 Técnicas2025-09-29T10:16:13Zoai: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:34982025-09-29 10:16:13.851CONICET 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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13.070432 |