Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)

Autores
Arias, Julia Ines; Walborn, Nolan Revere; Díaz, Sergio Simón; Barba, Rodolfo Hector; Apellániz, Jesús Maíz; Sabín Sanjulián, Carolina; Gamen, Roberto Claudio; Morrell, Nidia Irene; Sota, Alfredo; Marco, Amparo; Negueruela, Ignacio; Leão, João R. S.; Herrero, Artemio; Alfaro Navarro, Emilio Javier
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
On the basis of the Galactic O Star Spectroscopic Survey (GOSSS), we present a detailed systematic investigation of the O Vz stars. The currently used spectral classification criteria are rediscussed, and the Vz phenomenon is recalibrated through the addition of a quantitative criterion based on the equivalent widths of the He i λ4471, He ii λ4542, and He ii λ4686 spectral lines. The GOSSS O Vz and O V populations resulting from the newly adopted spectral classification criteria are comparatively analyzed. The locations of the O Vz stars are probed, showing a concentration of the most extreme cases toward the youngest star-forming regions. The occurrence of the Vz spectral peculiarity in a solar-metallicity environment, as predicted by the fastwind code, is also investigated, confirming the importance of taking into account several processes for the correct interpretation of the phenomenon.
Fil: Arias, Julia Ines. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Walborn, Nolan Revere. Space Telescope Science Institute; Estados Unidos
Fil: Díaz, Sergio Simón. Universidad de la Laguna; España
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Apellániz, Jesús Maíz. Centro de Astrobiología; España
Fil: Sabín Sanjulián, Carolina. Universidad de la Serena; Chile
Fil: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sota, Alfredo. Instituto de Astrofisica de Andalucia; España
Fil: Marco, Amparo. Universidad de Alicante; España. University of Florida; Estados Unidos
Fil: Negueruela, Ignacio. Universidad de Alicante; España
Fil: Leão, João R. S.. Universidade Federal do Rio Grande do Norte; Brasil
Fil: Herrero, Artemio. Universidad de la Laguna; España
Fil: Alfaro Navarro, Emilio Javier. Instituto de Astrofisica de Andalucia; España
Materia
Stars: Early-Type
Stars: Fundamental Parameters
Surveys
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:11336/37432
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/37432
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)Arias, Julia InesWalborn, Nolan RevereDíaz, Sergio SimónBarba, Rodolfo HectorApellániz, Jesús MaízSabín Sanjulián, CarolinaGamen, Roberto ClaudioMorrell, Nidia IreneSota, AlfredoMarco, AmparoNegueruela, IgnacioLeão, João R. S.Herrero, ArtemioAlfaro Navarro, Emilio JavierStars: Early-TypeStars: Fundamental ParametersSurveyshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1On the basis of the Galactic O Star Spectroscopic Survey (GOSSS), we present a detailed systematic investigation of the O Vz stars. The currently used spectral classification criteria are rediscussed, and the Vz phenomenon is recalibrated through the addition of a quantitative criterion based on the equivalent widths of the He i λ4471, He ii λ4542, and He ii λ4686 spectral lines. The GOSSS O Vz and O V populations resulting from the newly adopted spectral classification criteria are comparatively analyzed. The locations of the O Vz stars are probed, showing a concentration of the most extreme cases toward the youngest star-forming regions. The occurrence of the Vz spectral peculiarity in a solar-metallicity environment, as predicted by the fastwind code, is also investigated, confirming the importance of taking into account several processes for the correct interpretation of the phenomenon.Fil: Arias, Julia Ines. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Walborn, Nolan Revere. Space Telescope Science Institute; Estados UnidosFil: Díaz, Sergio Simón. Universidad de la Laguna; EspañaFil: Barba, Rodolfo Hector. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Apellániz, Jesús Maíz. Centro de Astrobiología; EspañaFil: Sabín Sanjulián, Carolina. Universidad de la Serena; ChileFil: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sota, Alfredo. Instituto de Astrofisica de Andalucia; EspañaFil: Marco, Amparo. Universidad de Alicante; España. University of Florida; Estados UnidosFil: Negueruela, Ignacio. Universidad de Alicante; EspañaFil: Leão, João R. S.. Universidade Federal do Rio Grande do Norte; BrasilFil: Herrero, Artemio. Universidad de la Laguna; EspañaFil: Alfaro Navarro, Emilio Javier. Instituto de Astrofisica de Andalucia; EspañaIOP Publishing2016-08info: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/11336/37432Arias, Julia Ines; Walborn, Nolan Revere; Díaz, Sergio Simón; Barba, Rodolfo Hector; Apellániz, Jesús Maíz; et al.; Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS); IOP Publishing; Astronomical Journal; 152; 2; 8-20160004-6256CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/0004-6256/152/2/31info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/0004-6256/152/2/31/metainfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1604.03842info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:09:42Zoai:ri.conicet.gov.ar:11336/37432instacron: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:34982025-10-22 11:09:42.95CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
title Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
spellingShingle Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
Arias, Julia Ines
Stars: Early-Type
Stars: Fundamental Parameters
Surveys
title_short Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
title_full Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
title_fullStr Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
title_full_unstemmed Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
title_sort Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS)
dc.creator.none.fl_str_mv Arias, Julia Ines
Walborn, Nolan Revere
Díaz, Sergio Simón
Barba, Rodolfo Hector
Apellániz, Jesús Maíz
Sabín Sanjulián, Carolina
Gamen, Roberto Claudio
Morrell, Nidia Irene
Sota, Alfredo
Marco, Amparo
Negueruela, Ignacio
Leão, João R. S.
Herrero, Artemio
Alfaro Navarro, Emilio Javier
author Arias, Julia Ines
author_facet Arias, Julia Ines
Walborn, Nolan Revere
Díaz, Sergio Simón
Barba, Rodolfo Hector
Apellániz, Jesús Maíz
Sabín Sanjulián, Carolina
Gamen, Roberto Claudio
Morrell, Nidia Irene
Sota, Alfredo
Marco, Amparo
Negueruela, Ignacio
Leão, João R. S.
Herrero, Artemio
Alfaro Navarro, Emilio Javier
author_role author
author2 Walborn, Nolan Revere
Díaz, Sergio Simón
Barba, Rodolfo Hector
Apellániz, Jesús Maíz
Sabín Sanjulián, Carolina
Gamen, Roberto Claudio
Morrell, Nidia Irene
Sota, Alfredo
Marco, Amparo
Negueruela, Ignacio
Leão, João R. S.
Herrero, Artemio
Alfaro Navarro, Emilio Javier
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Stars: Early-Type
Stars: Fundamental Parameters
Surveys
topic Stars: Early-Type
Stars: Fundamental Parameters
Surveys
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv On the basis of the Galactic O Star Spectroscopic Survey (GOSSS), we present a detailed systematic investigation of the O Vz stars. The currently used spectral classification criteria are rediscussed, and the Vz phenomenon is recalibrated through the addition of a quantitative criterion based on the equivalent widths of the He i λ4471, He ii λ4542, and He ii λ4686 spectral lines. The GOSSS O Vz and O V populations resulting from the newly adopted spectral classification criteria are comparatively analyzed. The locations of the O Vz stars are probed, showing a concentration of the most extreme cases toward the youngest star-forming regions. The occurrence of the Vz spectral peculiarity in a solar-metallicity environment, as predicted by the fastwind code, is also investigated, confirming the importance of taking into account several processes for the correct interpretation of the phenomenon.
Fil: Arias, Julia Ines. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Walborn, Nolan Revere. Space Telescope Science Institute; Estados Unidos
Fil: Díaz, Sergio Simón. Universidad de la Laguna; España
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Apellániz, Jesús Maíz. Centro de Astrobiología; España
Fil: Sabín Sanjulián, Carolina. Universidad de la Serena; Chile
Fil: Gamen, Roberto Claudio. 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: Morrell, Nidia Irene. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sota, Alfredo. Instituto de Astrofisica de Andalucia; España
Fil: Marco, Amparo. Universidad de Alicante; España. University of Florida; Estados Unidos
Fil: Negueruela, Ignacio. Universidad de Alicante; España
Fil: Leão, João R. S.. Universidade Federal do Rio Grande do Norte; Brasil
Fil: Herrero, Artemio. Universidad de la Laguna; España
Fil: Alfaro Navarro, Emilio Javier. Instituto de Astrofisica de Andalucia; España
description On the basis of the Galactic O Star Spectroscopic Survey (GOSSS), we present a detailed systematic investigation of the O Vz stars. The currently used spectral classification criteria are rediscussed, and the Vz phenomenon is recalibrated through the addition of a quantitative criterion based on the equivalent widths of the He i λ4471, He ii λ4542, and He ii λ4686 spectral lines. The GOSSS O Vz and O V populations resulting from the newly adopted spectral classification criteria are comparatively analyzed. The locations of the O Vz stars are probed, showing a concentration of the most extreme cases toward the youngest star-forming regions. The occurrence of the Vz spectral peculiarity in a solar-metallicity environment, as predicted by the fastwind code, is also investigated, confirming the importance of taking into account several processes for the correct interpretation of the phenomenon.
publishDate 2016
dc.date.none.fl_str_mv 2016-08
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/11336/37432
Arias, Julia Ines; Walborn, Nolan Revere; Díaz, Sergio Simón; Barba, Rodolfo Hector; Apellániz, Jesús Maíz; et al.; Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS); IOP Publishing; Astronomical Journal; 152; 2; 8-2016
0004-6256
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37432
identifier_str_mv Arias, Julia Ines; Walborn, Nolan Revere; Díaz, Sergio Simón; Barba, Rodolfo Hector; Apellániz, Jesús Maíz; et al.; Spectral classification and properties of the O Vz stars in the galactic O-star spectroscopic survey (GOSSS); IOP Publishing; Astronomical Journal; 152; 2; 8-2016
0004-6256
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3847/0004-6256/152/2/31
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/0004-6256/152/2/31/meta
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1604.03842
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 12.982451

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