A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy

Autores
Corti, Mariela Alejandra; Bosch, Guillermo Luis; Niemela, Virpi Sinikka
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Context. The presence of a Wolf-Rayet star, WR12, at α = 8h44m47.2s , δ = −45◦58 55.5 (J2000.0), triggered the search for a surrounding OB association now known as Bochum 7. Several papers have dealt with the existence of Bo 7, but none actually included spectral types of the stars. To assure the spectral types of members of the association, it is essential to have spectral images of them. Aims. In this paper we present previously unpublished spectra of OB stars over a 30 arcmin field covering the estimated field of the galactic OB association. Methods. From UBV aperture photometry, OB star candidates were selected, and optical spectroscopic observations were obtained for these in CASLEO, Argentina. Results. 63 stars were classified as OB type, including 8 stars already present in the LSS catalogue, and 37 of these 63 stars did not have a well-known spectral type. The OB stars were used to test the properties of the interstellar dust in the line of sight and the relation between the diffuse interestelar band at 4428 Å, which grows linearly with E(B−V) until 1 mag. Combining our data with 2MASS IR photometry we tested and confirmed that derivation of stellar parameters from our photometry, using the CHORIZOS code, is highly reliable.
Fil: Corti, Mariela Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Bosch, Guillermo Luis. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Niemela, Virpi Sinikka. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
Open clusters
Bochum 7 (galaxia)
Early type stars
Spectroscophy
Wolf Rayet stars
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:11336/44313
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopyCorti, Mariela AlejandraBosch, Guillermo LuisNiemela, Virpi SinikkaOpen clustersBochum 7 (galaxia)Early type starsSpectroscophyWolf Rayet starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Context. The presence of a Wolf-Rayet star, WR12, at α = 8h44m47.2s , δ = −45◦58 55.5 (J2000.0), triggered the search for a surrounding OB association now known as Bochum 7. Several papers have dealt with the existence of Bo 7, but none actually included spectral types of the stars. To assure the spectral types of members of the association, it is essential to have spectral images of them. Aims. In this paper we present previously unpublished spectra of OB stars over a 30 arcmin field covering the estimated field of the galactic OB association. Methods. From UBV aperture photometry, OB star candidates were selected, and optical spectroscopic observations were obtained for these in CASLEO, Argentina. Results. 63 stars were classified as OB type, including 8 stars already present in the LSS catalogue, and 37 of these 63 stars did not have a well-known spectral type. The OB stars were used to test the properties of the interstellar dust in the line of sight and the relation between the diffuse interestelar band at 4428 Å, which grows linearly with E(B−V) until 1 mag. Combining our data with 2MASS IR photometry we tested and confirmed that derivation of stellar parameters from our photometry, using the CHORIZOS code, is highly reliable.Fil: Corti, Mariela Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Bosch, Guillermo Luis. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Niemela, Virpi Sinikka. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaEDP Sciences2007-12info: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/11336/44313Corti, Mariela Alejandra; Bosch, Guillermo Luis; Niemela, Virpi Sinikka; A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy; EDP Sciences; Astronomy and Astrophysics; 467; 1; 12-2007; 137-1430004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20065041info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2007/19/aa5041-06/aa5041-06.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 Técnicas2025-09-29T09:54:15Zoai:ri.conicet.gov.ar:11336/44313instacron: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 09:54:15.517CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
title A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
spellingShingle A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
Corti, Mariela Alejandra
Open clusters
Bochum 7 (galaxia)
Early type stars
Spectroscophy
Wolf Rayet stars
title_short A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
title_full A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
title_fullStr A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
title_full_unstemmed A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
title_sort A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy
dc.creator.none.fl_str_mv Corti, Mariela Alejandra
Bosch, Guillermo Luis
Niemela, Virpi Sinikka
author Corti, Mariela Alejandra
author_facet Corti, Mariela Alejandra
Bosch, Guillermo Luis
Niemela, Virpi Sinikka
author_role author
author2 Bosch, Guillermo Luis
Niemela, Virpi Sinikka
author2_role author
author
dc.subject.none.fl_str_mv Open clusters
Bochum 7 (galaxia)
Early type stars
Spectroscophy
Wolf Rayet stars
topic Open clusters
Bochum 7 (galaxia)
Early type stars
Spectroscophy
Wolf Rayet stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Context. The presence of a Wolf-Rayet star, WR12, at α = 8h44m47.2s , δ = −45◦58 55.5 (J2000.0), triggered the search for a surrounding OB association now known as Bochum 7. Several papers have dealt with the existence of Bo 7, but none actually included spectral types of the stars. To assure the spectral types of members of the association, it is essential to have spectral images of them. Aims. In this paper we present previously unpublished spectra of OB stars over a 30 arcmin field covering the estimated field of the galactic OB association. Methods. From UBV aperture photometry, OB star candidates were selected, and optical spectroscopic observations were obtained for these in CASLEO, Argentina. Results. 63 stars were classified as OB type, including 8 stars already present in the LSS catalogue, and 37 of these 63 stars did not have a well-known spectral type. The OB stars were used to test the properties of the interstellar dust in the line of sight and the relation between the diffuse interestelar band at 4428 Å, which grows linearly with E(B−V) until 1 mag. Combining our data with 2MASS IR photometry we tested and confirmed that derivation of stellar parameters from our photometry, using the CHORIZOS code, is highly reliable.
Fil: Corti, Mariela Alejandra. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Bosch, Guillermo Luis. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Niemela, Virpi Sinikka. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Context. The presence of a Wolf-Rayet star, WR12, at α = 8h44m47.2s , δ = −45◦58 55.5 (J2000.0), triggered the search for a surrounding OB association now known as Bochum 7. Several papers have dealt with the existence of Bo 7, but none actually included spectral types of the stars. To assure the spectral types of members of the association, it is essential to have spectral images of them. Aims. In this paper we present previously unpublished spectra of OB stars over a 30 arcmin field covering the estimated field of the galactic OB association. Methods. From UBV aperture photometry, OB star candidates were selected, and optical spectroscopic observations were obtained for these in CASLEO, Argentina. Results. 63 stars were classified as OB type, including 8 stars already present in the LSS catalogue, and 37 of these 63 stars did not have a well-known spectral type. The OB stars were used to test the properties of the interstellar dust in the line of sight and the relation between the diffuse interestelar band at 4428 Å, which grows linearly with E(B−V) until 1 mag. Combining our data with 2MASS IR photometry we tested and confirmed that derivation of stellar parameters from our photometry, using the CHORIZOS code, is highly reliable.
publishDate 2007
dc.date.none.fl_str_mv 2007-12
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/11336/44313
Corti, Mariela Alejandra; Bosch, Guillermo Luis; Niemela, Virpi Sinikka; A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy; EDP Sciences; Astronomy and Astrophysics; 467; 1; 12-2007; 137-143
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44313
identifier_str_mv Corti, Mariela Alejandra; Bosch, Guillermo Luis; Niemela, Virpi Sinikka; A search for OB stars in the field of the galactic OB association Bochum 7.I. UBV-IR photometry and optical spectroscopy; EDP Sciences; Astronomy and Astrophysics; 467; 1; 12-2007; 137-143
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/doi/10.1051/0004-6361:20065041
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2007/19/aa5041-06/aa5041-06.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
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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