A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry

Autores
Corti, Mariela Alejandra; Orellana, Rosa Beatriz; Bosch, Guillermo Luis
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. Methods. We used our own visual spectroscopic and UBV photometric data of a 300 × 300 region centered at a = 8h44m47:2s, δ =-45°58055.500. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. Results. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l = 265.12, b =-2) at a distance of '5640 pc. Its proper motion is μacosd =-4:92 ± 0:08 mas yr-1, μd = 3:26 ± 0:08 mas yr-1. We derived an average heliocentric radial velocity of ∼35 km s-1 and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (=3 × 106 years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.
Fil: Corti, Mariela Alejandra. 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: Orellana, Rosa Beatriz. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Bosch, Guillermo Luis. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
Catalogs
Open Clusters And Associations: Individual: Bochum 7
Proper Motions
Stars: Early-Type
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:11336/82403
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/82403
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: II. Proper motion and IR photometryCorti, Mariela AlejandraOrellana, Rosa BeatrizBosch, Guillermo LuisCatalogsOpen Clusters And Associations: Individual: Bochum 7Proper MotionsStars: Early-Typehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Aims. We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. Methods. We used our own visual spectroscopic and UBV photometric data of a 300 × 300 region centered at a = 8h44m47:2s, δ =-45°58055.500. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. Results. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l = 265.12, b =-2) at a distance of '5640 pc. Its proper motion is μacosd =-4:92 ± 0:08 mas yr-1, μd = 3:26 ± 0:08 mas yr-1. We derived an average heliocentric radial velocity of ∼35 km s-1 and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (=3 × 106 years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.Fil: Corti, Mariela Alejandra. 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: Orellana, Rosa Beatriz. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Bosch, Guillermo Luis. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaEDP Sciences2018-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/82403Corti, Mariela Alejandra; Orellana, Rosa Beatriz; Bosch, Guillermo Luis; A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry; EDP Sciences; Astronomy and Astrophysics; 616; A40; 8-2018; 1-100004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201731661info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2018/08/aa31661-17/aa31661-17.htmlinfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1804.10672info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:45:58Zoai:ri.conicet.gov.ar:11336/82403instacron: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 10:45:58.934CONICET 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: II. Proper motion and IR photometry
title A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
spellingShingle A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
Corti, Mariela Alejandra
Catalogs
Open Clusters And Associations: Individual: Bochum 7
Proper Motions
Stars: Early-Type
title_short A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
title_full A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
title_fullStr A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
title_full_unstemmed A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
title_sort A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry
dc.creator.none.fl_str_mv Corti, Mariela Alejandra
Orellana, Rosa Beatriz
Bosch, Guillermo Luis
author Corti, Mariela Alejandra
author_facet Corti, Mariela Alejandra
Orellana, Rosa Beatriz
Bosch, Guillermo Luis
author_role author
author2 Orellana, Rosa Beatriz
Bosch, Guillermo Luis
author2_role author
author
dc.subject.none.fl_str_mv Catalogs
Open Clusters And Associations: Individual: Bochum 7
Proper Motions
Stars: Early-Type
topic Catalogs
Open Clusters And Associations: Individual: Bochum 7
Proper Motions
Stars: Early-Type
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. Methods. We used our own visual spectroscopic and UBV photometric data of a 300 × 300 region centered at a = 8h44m47:2s, δ =-45°58055.500. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. Results. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l = 265.12, b =-2) at a distance of '5640 pc. Its proper motion is μacosd =-4:92 ± 0:08 mas yr-1, μd = 3:26 ± 0:08 mas yr-1. We derived an average heliocentric radial velocity of ∼35 km s-1 and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (=3 × 106 years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.
Fil: Corti, Mariela Alejandra. 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: Orellana, Rosa Beatriz. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Bosch, Guillermo Luis. 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. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Aims. We plan to identify the members of the Bochum 7 association by performing simultaneous astrometric and spectrophotometric analyses, and estimate its distance and evolutionary stage. Methods. We used our own visual spectroscopic and UBV photometric data of a 300 × 300 region centered at a = 8h44m47:2s, δ =-45°58055.500. This information enabled us to estimate the spectral classification and distance of all stars present in the region. The proper motion was analyzed with data of the UCAC 5 catalog and was used to identify the members of this association. We added JHK data from 2MASS and IRAS catalogs to check for the presence of infrared (IR) excess stars. Results. We found that Bochum 7 is an OB association with at least 27 identified stellar members (l = 265.12, b =-2) at a distance of '5640 pc. Its proper motion is μacosd =-4:92 ± 0:08 mas yr-1, μd = 3:26 ± 0:08 mas yr-1. We derived an average heliocentric radial velocity of ∼35 km s-1 and were able to confirm the binary nature of the (ALS 1135) system and detect four new binary star candidates. Analysis of data for massive Bo 7 star candidates points towards a young age (=3 × 106 years old) for the association, although the presence of a previous episode of star formation remains to be analyzed.
publishDate 2018
dc.date.none.fl_str_mv 2018-08
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/11336/82403
Corti, Mariela Alejandra; Orellana, Rosa Beatriz; Bosch, Guillermo Luis; A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry; EDP Sciences; Astronomy and Astrophysics; 616; A40; 8-2018; 1-10
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/82403
identifier_str_mv Corti, Mariela Alejandra; Orellana, Rosa Beatriz; Bosch, Guillermo Luis; A search for OB stars in the field of the galactic OB association Bochum 7: II. Proper motion and IR photometry; EDP Sciences; Astronomy and Astrophysics; 616; A40; 8-2018; 1-10
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/10.1051/0004-6361/201731661
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2018/08/aa31661-17/aa31661-17.html
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1804.10672
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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