Revisiting the area of the open cluster Stock 16

Autores
Vázquez, Rubén Ángel; Baume, Gustavo Luis; Feinstein Baigorri, Carlos; Nuñez, J. A.; Vergne, María Marcela
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Deep CCD UBV(RI)C photometry has been carried out in the area of the open cluster Stock 16. The different photometric diagrams indicate the presence of three superimposed stellar groups, all composed of early type stars. The first of them, the cluster Stock 16, suffers from slightly variable reddening with a mean color excess 〈EB-V〉 = 0.51. The second group, reddened by 〈EB-V〉 = 0.84, includes the Wolf-Rayet star WR50 (a WC7+OB), and the third one, with a mean 〈E B-V〉 = 1.18, also includes another Wolf-Rayet star, WR 51 (a WN4+OB?). Our results confirm the distance and reddening already stated for Stock 16 but include new members. Concerning the other two highly reddened groups, we show that the first one - located at a distance of 3600 pc - is probably related to an anonymous OB association behind Cen OB1 also at 3600 pc already mentioned in the literature; the other seems to be a distant OB association - at more than 9000 pc - which may belong to the Scutum-Crux spiral arm. In these two groups we find evidence that the absorption law, A V/EB-V = R amounts to 4.0 approximately. The ages of the different star populations in the zone range from 5 × 106 yr to 6.4 × 106 yr for Stock 16, 8 × 106 for the second most reddened group and 5 × 106 for the probable association in Scutum-Crux. A determination of the IMF slope of Stock 16 was also carried out for stars in the mass range 1.8 < M < 14 M ⊙, giving a normal value x = 1.3.
Este documento tiene una corrección (ver documento relacionado).
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Galaxy: open clusters and associations: individual: WR 50
stars: luminosity function, mass function Galaxy: open clusters and associations: individual: WR 51
stars: imaging
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84636

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/84636
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Revisiting the area of the open cluster Stock 16Vázquez, Rubén ÁngelBaume, Gustavo LuisFeinstein Baigorri, CarlosNuñez, J. A.Vergne, María MarcelaCiencias AstronómicasGalaxy: open clusters and associations: individual: WR 50stars: luminosity function, mass function Galaxy: open clusters and associations: individual: WR 51stars: imagingDeep CCD UBV(RI)C photometry has been carried out in the area of the open cluster Stock 16. The different photometric diagrams indicate the presence of three superimposed stellar groups, all composed of early type stars. The first of them, the cluster Stock 16, suffers from slightly variable reddening with a mean color excess 〈EB-V〉 = 0.51. The second group, reddened by 〈EB-V〉 = 0.84, includes the Wolf-Rayet star WR50 (a WC7+OB), and the third one, with a mean 〈E B-V〉 = 1.18, also includes another Wolf-Rayet star, WR 51 (a WN4+OB?). Our results confirm the distance and reddening already stated for Stock 16 but include new members. Concerning the other two highly reddened groups, we show that the first one - located at a distance of 3600 pc - is probably related to an anonymous OB association behind Cen OB1 also at 3600 pc already mentioned in the literature; the other seems to be a distant OB association - at more than 9000 pc - which may belong to the Scutum-Crux spiral arm. In these two groups we find evidence that the absorption law, A V/EB-V = R amounts to 4.0 approximately. The ages of the different star populations in the zone range from 5 × 106 yr to 6.4 × 106 yr for Stock 16, 8 × 106 for the second most reddened group and 5 × 106 for the probable association in Scutum-Crux. A determination of the IMF slope of Stock 16 was also carried out for stars in the mass range 1.8 < M < 14 M ⊙, giving a normal value x = 1.3.Este documento tiene una corrección (ver documento relacionado).Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf471-480http://sedici.unlp.edu.ar/handle/10915/84636enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041089info:eu-repo/semantics/reference/hdl/10915/84899info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:14Zoai:sedici.unlp.edu.ar:10915/84636Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:15.313SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Revisiting the area of the open cluster Stock 16
title Revisiting the area of the open cluster Stock 16
spellingShingle Revisiting the area of the open cluster Stock 16
Vázquez, Rubén Ángel
Ciencias Astronómicas
Galaxy: open clusters and associations: individual: WR 50
stars: luminosity function, mass function Galaxy: open clusters and associations: individual: WR 51
stars: imaging
title_short Revisiting the area of the open cluster Stock 16
title_full Revisiting the area of the open cluster Stock 16
title_fullStr Revisiting the area of the open cluster Stock 16
title_full_unstemmed Revisiting the area of the open cluster Stock 16
title_sort Revisiting the area of the open cluster Stock 16
dc.creator.none.fl_str_mv Vázquez, Rubén Ángel
Baume, Gustavo Luis
Feinstein Baigorri, Carlos
Nuñez, J. A.
Vergne, María Marcela
author Vázquez, Rubén Ángel
author_facet Vázquez, Rubén Ángel
Baume, Gustavo Luis
Feinstein Baigorri, Carlos
Nuñez, J. A.
Vergne, María Marcela
author_role author
author2 Baume, Gustavo Luis
Feinstein Baigorri, Carlos
Nuñez, J. A.
Vergne, María Marcela
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxy: open clusters and associations: individual: WR 50
stars: luminosity function, mass function Galaxy: open clusters and associations: individual: WR 51
stars: imaging
topic Ciencias Astronómicas
Galaxy: open clusters and associations: individual: WR 50
stars: luminosity function, mass function Galaxy: open clusters and associations: individual: WR 51
stars: imaging
dc.description.none.fl_txt_mv Deep CCD UBV(RI)C photometry has been carried out in the area of the open cluster Stock 16. The different photometric diagrams indicate the presence of three superimposed stellar groups, all composed of early type stars. The first of them, the cluster Stock 16, suffers from slightly variable reddening with a mean color excess 〈EB-V〉 = 0.51. The second group, reddened by 〈EB-V〉 = 0.84, includes the Wolf-Rayet star WR50 (a WC7+OB), and the third one, with a mean 〈E B-V〉 = 1.18, also includes another Wolf-Rayet star, WR 51 (a WN4+OB?). Our results confirm the distance and reddening already stated for Stock 16 but include new members. Concerning the other two highly reddened groups, we show that the first one - located at a distance of 3600 pc - is probably related to an anonymous OB association behind Cen OB1 also at 3600 pc already mentioned in the literature; the other seems to be a distant OB association - at more than 9000 pc - which may belong to the Scutum-Crux spiral arm. In these two groups we find evidence that the absorption law, A V/EB-V = R amounts to 4.0 approximately. The ages of the different star populations in the zone range from 5 × 106 yr to 6.4 × 106 yr for Stock 16, 8 × 106 for the second most reddened group and 5 × 106 for the probable association in Scutum-Crux. A determination of the IMF slope of Stock 16 was also carried out for stars in the mass range 1.8 < M < 14 M ⊙, giving a normal value x = 1.3.
Este documento tiene una corrección (ver documento relacionado).
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description Deep CCD UBV(RI)C photometry has been carried out in the area of the open cluster Stock 16. The different photometric diagrams indicate the presence of three superimposed stellar groups, all composed of early type stars. The first of them, the cluster Stock 16, suffers from slightly variable reddening with a mean color excess 〈EB-V〉 = 0.51. The second group, reddened by 〈EB-V〉 = 0.84, includes the Wolf-Rayet star WR50 (a WC7+OB), and the third one, with a mean 〈E B-V〉 = 1.18, also includes another Wolf-Rayet star, WR 51 (a WN4+OB?). Our results confirm the distance and reddening already stated for Stock 16 but include new members. Concerning the other two highly reddened groups, we show that the first one - located at a distance of 3600 pc - is probably related to an anonymous OB association behind Cen OB1 also at 3600 pc already mentioned in the literature; the other seems to be a distant OB association - at more than 9000 pc - which may belong to the Scutum-Crux spiral arm. In these two groups we find evidence that the absorption law, A V/EB-V = R amounts to 4.0 approximately. The ages of the different star populations in the zone range from 5 × 106 yr to 6.4 × 106 yr for Stock 16, 8 × 106 for the second most reddened group and 5 × 106 for the probable association in Scutum-Crux. A determination of the IMF slope of Stock 16 was also carried out for stars in the mass range 1.8 < M < 14 M ⊙, giving a normal value x = 1.3.
publishDate 2005
dc.date.none.fl_str_mv 2005
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/10915/84636
url http://sedici.unlp.edu.ar/handle/10915/84636
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6361
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041089
info:eu-repo/semantics/reference/hdl/10915/84899
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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471-480
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instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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