A 12CO (J = 1 -> 0) study towards the Ara OB1 region

Autores
Arnal, Edmundo Marcelo; May, J.; Romero, Gisela Andrea
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Intermediate angular resolution (HPBW = 8. 0 7) carbon monoxide (12CO J = 1→0) line observations towards the OB association Ara OB1 are reported. The molecular line observations cover an area of 2. ◦75 × 3. ◦00, and disclose a rich and complex distribution of the molecular line emission. The molecular features likely to be associated with the OB-association Ara OB1 span the velocity range from −28 to −20 km s−1. The most negative radial velocities are observed along NGC 6188 (≡Rim nebula). This nebula marks the interface between the H region RCW 108 and the highly absorbing molecular material located westwards of the ionised region. The dominant CO structures, labeled E and F, have a radial velocity of about −23.5 and −21.8 km s−1, respectively. The former harbours a bright optical knot, the infrared cluster RCW-108 and the strong IRAS source 16362−4845. IRAS point sources are also seen in projection onto 12CO concentrations F and H. This may indicate that the star forming process is a widespread phenomenon in this molecular complex. Extended continuum emission, having a high degree of spatial correlation with both the infrared and molecular emission, is observed in the region. We believe that this emission, thermal in nature, arises from the ionised surface layers of the molecular complex. The ionising agents are the high mass stars of NGC 6193, the nucleus of Ara OB1. The total amount of molecular gas related to Ara OB1 is about ∼1.4×104 M .
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. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: May, J.. Universidad de Chile; Chile
Fil: Romero, Gisela Andrea. 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
HII regions
RCW 108 (región HII)
Interstellar medium
Open clusters
NGC 6193 (galaxia)
Ara OB1
Radio continuum
Radio lines
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:11336/30787
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/30787
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A 12CO (J = 1 -> 0) study towards the Ara OB1 regionArnal, Edmundo MarceloMay, J.Romero, Gisela AndreaHII regionsRCW 108 (región HII)Interstellar mediumOpen clustersNGC 6193 (galaxia)Ara OB1Radio continuumRadio lineshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Intermediate angular resolution (HPBW = 8. 0 7) carbon monoxide (12CO J = 1→0) line observations towards the OB association Ara OB1 are reported. The molecular line observations cover an area of 2. ◦75 × 3. ◦00, and disclose a rich and complex distribution of the molecular line emission. The molecular features likely to be associated with the OB-association Ara OB1 span the velocity range from −28 to −20 km s−1. The most negative radial velocities are observed along NGC 6188 (≡Rim nebula). This nebula marks the interface between the H region RCW 108 and the highly absorbing molecular material located westwards of the ionised region. The dominant CO structures, labeled E and F, have a radial velocity of about −23.5 and −21.8 km s−1, respectively. The former harbours a bright optical knot, the infrared cluster RCW-108 and the strong IRAS source 16362−4845. IRAS point sources are also seen in projection onto 12CO concentrations F and H. This may indicate that the star forming process is a widespread phenomenon in this molecular complex. Extended continuum emission, having a high degree of spatial correlation with both the infrared and molecular emission, is observed in the region. We believe that this emission, thermal in nature, arises from the ionised surface layers of the molecular complex. The ionising agents are the high mass stars of NGC 6193, the nucleus of Ara OB1. The total amount of molecular gas related to Ara OB1 is about ∼1.4×104 M .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. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: May, J.. Universidad de Chile; ChileFil: Romero, Gisela Andrea. 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; ArgentinaEDP Sciences2003-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/30787Romero, Gisela Andrea; May, J.; Arnal, Edmundo Marcelo; A 12CO (J = 1 -> 0) study towards the Ara OB1 region; EDP Sciences; Astronomy and Astrophysics; 412; 12-2003; 431-4450004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2003A%26A...412..431Ainfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20031455info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2003/48/aah4540/aah4540.htmlinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:43Zoai:ri.conicet.gov.ar:11336/30787instacron: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 10:17:43.333CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A 12CO (J = 1 -> 0) study towards the Ara OB1 region
title A 12CO (J = 1 -> 0) study towards the Ara OB1 region
spellingShingle A 12CO (J = 1 -> 0) study towards the Ara OB1 region
Arnal, Edmundo Marcelo
HII regions
RCW 108 (región HII)
Interstellar medium
Open clusters
NGC 6193 (galaxia)
Ara OB1
Radio continuum
Radio lines
title_short A 12CO (J = 1 -> 0) study towards the Ara OB1 region
title_full A 12CO (J = 1 -> 0) study towards the Ara OB1 region
title_fullStr A 12CO (J = 1 -> 0) study towards the Ara OB1 region
title_full_unstemmed A 12CO (J = 1 -> 0) study towards the Ara OB1 region
title_sort A 12CO (J = 1 -> 0) study towards the Ara OB1 region
dc.creator.none.fl_str_mv Arnal, Edmundo Marcelo
May, J.
Romero, Gisela Andrea
author Arnal, Edmundo Marcelo
author_facet Arnal, Edmundo Marcelo
May, J.
Romero, Gisela Andrea
author_role author
author2 May, J.
Romero, Gisela Andrea
author2_role author
author
dc.subject.none.fl_str_mv HII regions
RCW 108 (región HII)
Interstellar medium
Open clusters
NGC 6193 (galaxia)
Ara OB1
Radio continuum
Radio lines
topic HII regions
RCW 108 (región HII)
Interstellar medium
Open clusters
NGC 6193 (galaxia)
Ara OB1
Radio continuum
Radio lines
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Intermediate angular resolution (HPBW = 8. 0 7) carbon monoxide (12CO J = 1→0) line observations towards the OB association Ara OB1 are reported. The molecular line observations cover an area of 2. ◦75 × 3. ◦00, and disclose a rich and complex distribution of the molecular line emission. The molecular features likely to be associated with the OB-association Ara OB1 span the velocity range from −28 to −20 km s−1. The most negative radial velocities are observed along NGC 6188 (≡Rim nebula). This nebula marks the interface between the H region RCW 108 and the highly absorbing molecular material located westwards of the ionised region. The dominant CO structures, labeled E and F, have a radial velocity of about −23.5 and −21.8 km s−1, respectively. The former harbours a bright optical knot, the infrared cluster RCW-108 and the strong IRAS source 16362−4845. IRAS point sources are also seen in projection onto 12CO concentrations F and H. This may indicate that the star forming process is a widespread phenomenon in this molecular complex. Extended continuum emission, having a high degree of spatial correlation with both the infrared and molecular emission, is observed in the region. We believe that this emission, thermal in nature, arises from the ionised surface layers of the molecular complex. The ionising agents are the high mass stars of NGC 6193, the nucleus of Ara OB1. The total amount of molecular gas related to Ara OB1 is about ∼1.4×104 M .
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. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: May, J.. Universidad de Chile; Chile
Fil: Romero, Gisela Andrea. 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 Intermediate angular resolution (HPBW = 8. 0 7) carbon monoxide (12CO J = 1→0) line observations towards the OB association Ara OB1 are reported. The molecular line observations cover an area of 2. ◦75 × 3. ◦00, and disclose a rich and complex distribution of the molecular line emission. The molecular features likely to be associated with the OB-association Ara OB1 span the velocity range from −28 to −20 km s−1. The most negative radial velocities are observed along NGC 6188 (≡Rim nebula). This nebula marks the interface between the H region RCW 108 and the highly absorbing molecular material located westwards of the ionised region. The dominant CO structures, labeled E and F, have a radial velocity of about −23.5 and −21.8 km s−1, respectively. The former harbours a bright optical knot, the infrared cluster RCW-108 and the strong IRAS source 16362−4845. IRAS point sources are also seen in projection onto 12CO concentrations F and H. This may indicate that the star forming process is a widespread phenomenon in this molecular complex. Extended continuum emission, having a high degree of spatial correlation with both the infrared and molecular emission, is observed in the region. We believe that this emission, thermal in nature, arises from the ionised surface layers of the molecular complex. The ionising agents are the high mass stars of NGC 6193, the nucleus of Ara OB1. The total amount of molecular gas related to Ara OB1 is about ∼1.4×104 M .
publishDate 2003
dc.date.none.fl_str_mv 2003-12
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/11336/30787
Romero, Gisela Andrea; May, J.; Arnal, Edmundo Marcelo; A 12CO (J = 1 -> 0) study towards the Ara OB1 region; EDP Sciences; Astronomy and Astrophysics; 412; 12-2003; 431-445
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/30787
identifier_str_mv Romero, Gisela Andrea; May, J.; Arnal, Edmundo Marcelo; A 12CO (J = 1 -> 0) study towards the Ara OB1 region; EDP Sciences; Astronomy and Astrophysics; 412; 12-2003; 431-445
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/http://adsabs.harvard.edu/abs/2003A%26A...412..431A
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20031455
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2003/48/aah4540/aah4540.html
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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