The ratio of total to selective absorption in the Carina OB2 association

Autores
García, Beatriz; Clariá, Juan J.; Levato, H.
Año de publicación
1988
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Several previous studies in and around the Great Carina nebula (NGC 3372) have strongly indicated an abnormal interstellar extinction law with a high ratio of total to selective absorption R. In the present study, new UBV photometric data and accurate MK spectral-types of stars in the region of the Carina OB2 association are used to show that (1) Car OB2 is a genuine stellar association located at a distance of 3.2 kpc, and (2) the interstellar extinction law seems to be normal throughout most of the region. A representative value of R = A; v/E(B − V) = 3.0 is derived for Car OB2 from the variable extinction method.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
Ciencias Astronómicas
Great Carina nebula
UBV photometric data
MK spectral-types
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:10915/142148
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/142148
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The ratio of total to selective absorption in the Carina OB2 associationGarcía, BeatrizClariá, Juan J.Levato, H.AstronomíaCiencias AstronómicasGreat Carina nebulaUBV photometric dataMK spectral-typesSeveral previous studies in and around the Great Carina nebula (NGC 3372) have strongly indicated an abnormal interstellar extinction law with a high ratio of total to selective absorption R. In the present study, new UBV photometric data and accurate MK spectral-types of stars in the region of the Carina OB2 association are used to show that (1) Car OB2 is a genuine stellar association located at a distance of 3.2 kpc, and (2) the interstellar extinction law seems to be normal throughout most of the region. A representative value of R = A; v/E(B − V) = 3.0 is derived for Car OB2 from the variable extinction method.Facultad de Ciencias Astronómicas y Geofísicas1988info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf317-328http://sedici.unlp.edu.ar/handle/10915/142148enginfo:eu-repo/semantics/altIdentifier/issn/0004-640xinfo:eu-repo/semantics/altIdentifier/issn/1572-946xinfo:eu-repo/semantics/altIdentifier/doi/10.1007/bf00637143info: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:UNLP2025-09-03T11:04:43Zoai:sedici.unlp.edu.ar:10915/142148Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:04:43.286SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The ratio of total to selective absorption in the Carina OB2 association
title The ratio of total to selective absorption in the Carina OB2 association
spellingShingle The ratio of total to selective absorption in the Carina OB2 association
García, Beatriz
Astronomía
Ciencias Astronómicas
Great Carina nebula
UBV photometric data
MK spectral-types
title_short The ratio of total to selective absorption in the Carina OB2 association
title_full The ratio of total to selective absorption in the Carina OB2 association
title_fullStr The ratio of total to selective absorption in the Carina OB2 association
title_full_unstemmed The ratio of total to selective absorption in the Carina OB2 association
title_sort The ratio of total to selective absorption in the Carina OB2 association
dc.creator.none.fl_str_mv García, Beatriz
Clariá, Juan J.
Levato, H.
author García, Beatriz
author_facet García, Beatriz
Clariá, Juan J.
Levato, H.
author_role author
author2 Clariá, Juan J.
Levato, H.
author2_role author
author
dc.subject.none.fl_str_mv Astronomía
Ciencias Astronómicas
Great Carina nebula
UBV photometric data
MK spectral-types
topic Astronomía
Ciencias Astronómicas
Great Carina nebula
UBV photometric data
MK spectral-types
dc.description.none.fl_txt_mv Several previous studies in and around the Great Carina nebula (NGC 3372) have strongly indicated an abnormal interstellar extinction law with a high ratio of total to selective absorption R. In the present study, new UBV photometric data and accurate MK spectral-types of stars in the region of the Carina OB2 association are used to show that (1) Car OB2 is a genuine stellar association located at a distance of 3.2 kpc, and (2) the interstellar extinction law seems to be normal throughout most of the region. A representative value of R = A; v/E(B − V) = 3.0 is derived for Car OB2 from the variable extinction method.
Facultad de Ciencias Astronómicas y Geofísicas
description Several previous studies in and around the Great Carina nebula (NGC 3372) have strongly indicated an abnormal interstellar extinction law with a high ratio of total to selective absorption R. In the present study, new UBV photometric data and accurate MK spectral-types of stars in the region of the Carina OB2 association are used to show that (1) Car OB2 is a genuine stellar association located at a distance of 3.2 kpc, and (2) the interstellar extinction law seems to be normal throughout most of the region. A representative value of R = A; v/E(B − V) = 3.0 is derived for Car OB2 from the variable extinction method.
publishDate 1988
dc.date.none.fl_str_mv 1988
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/10915/142148
url http://sedici.unlp.edu.ar/handle/10915/142148
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-640x
info:eu-repo/semantics/altIdentifier/issn/1572-946x
info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00637143
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
317-328
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 13.13397

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