The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500

Autores
Sota, Alfredo; Maíz Apellániz, Jesús; Walborn, Nolan Revere; Alfaro, Emilio J.; Barbá, Rodolfo Héctor; Morrell, Nidia Irene; Gamen, Roberto Claudio; Arias, Julia Inés
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R ∼ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog of Maíz Apellniz etal. and Sota etal. The spectral classification system is rediscussed and a new atlas is presented, which supersedes previous versions. Extensive sequences of exceptional objects are given, including types Ofc, ON/OC, Onfp, Of?p, Oe, and double-lined spectroscopic binaries. The remaining normal spectra bring this first sample to 184 stars, which is close to complete to B = 8 and north of δ = -20° and includes all of the northern objects in Maíz Apellniz etal. that are still classified as O stars. The systematic and random accuracies of these classifications are substantially higher than previously attainable, because of the quality, quantity, and homogeneity of the data and analysis procedures. These results will enhance subsequent investigations in Galactic astronomy and stellar astrophysics. In the future, we will publish the rest of the survey, beginning with a second paper that will include most of the southern stars in Maíz Apellniz etal.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
binaries: general
stars: early-type
stars: emission-line, Be
stars: Wolf-Rayet
surveys
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:10915/83946

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network_name_str SEDICI (UNLP)
spelling The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500Sota, AlfredoMaíz Apellániz, JesúsWalborn, Nolan RevereAlfaro, Emilio J.Barbá, Rodolfo HéctorMorrell, Nidia IreneGamen, Roberto ClaudioArias, Julia InésCiencias Astronómicasbinaries: generalstars: early-typestars: emission-line, Bestars: Wolf-RayetsurveysWe present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R ∼ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog of Maíz Apellniz etal. and Sota etal. The spectral classification system is rediscussed and a new atlas is presented, which supersedes previous versions. Extensive sequences of exceptional objects are given, including types Ofc, ON/OC, Onfp, Of?p, Oe, and double-lined spectroscopic binaries. The remaining normal spectra bring this first sample to 184 stars, which is close to complete to B = 8 and north of δ = -20° and includes all of the northern objects in Maíz Apellniz etal. that are still classified as O stars. The systematic and random accuracies of these classifications are substantially higher than previously attainable, because of the quality, quantity, and homogeneity of the data and analysis procedures. These results will enhance subsequent investigations in Galactic astronomy and stellar astrophysics. In the future, we will publish the rest of the survey, beginning with a second paper that will include most of the southern stars in Maíz Apellniz etal.Instituto de Astrofísica de La Plata2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/83946enginfo:eu-repo/semantics/altIdentifier/issn/0067-0049info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/193/2/24info: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:UNLP2025-09-29T11:16:10Zoai:sedici.unlp.edu.ar:10915/83946Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:10.313SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
title The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
spellingShingle The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
Sota, Alfredo
Ciencias Astronómicas
binaries: general
stars: early-type
stars: emission-line, Be
stars: Wolf-Rayet
surveys
title_short The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
title_full The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
title_fullStr The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
title_full_unstemmed The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
title_sort The Galactic O-Star Spectroscopic Survey : I. Classification system and bright northern stars in the Blue-Violet at R ∼ 2500
dc.creator.none.fl_str_mv Sota, Alfredo
Maíz Apellániz, Jesús
Walborn, Nolan Revere
Alfaro, Emilio J.
Barbá, Rodolfo Héctor
Morrell, Nidia Irene
Gamen, Roberto Claudio
Arias, Julia Inés
author Sota, Alfredo
author_facet Sota, Alfredo
Maíz Apellániz, Jesús
Walborn, Nolan Revere
Alfaro, Emilio J.
Barbá, Rodolfo Héctor
Morrell, Nidia Irene
Gamen, Roberto Claudio
Arias, Julia Inés
author_role author
author2 Maíz Apellániz, Jesús
Walborn, Nolan Revere
Alfaro, Emilio J.
Barbá, Rodolfo Héctor
Morrell, Nidia Irene
Gamen, Roberto Claudio
Arias, Julia Inés
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
binaries: general
stars: early-type
stars: emission-line, Be
stars: Wolf-Rayet
surveys
topic Ciencias Astronómicas
binaries: general
stars: early-type
stars: emission-line, Be
stars: Wolf-Rayet
surveys
dc.description.none.fl_txt_mv We present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R ∼ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog of Maíz Apellniz etal. and Sota etal. The spectral classification system is rediscussed and a new atlas is presented, which supersedes previous versions. Extensive sequences of exceptional objects are given, including types Ofc, ON/OC, Onfp, Of?p, Oe, and double-lined spectroscopic binaries. The remaining normal spectra bring this first sample to 184 stars, which is close to complete to B = 8 and north of δ = -20° and includes all of the northern objects in Maíz Apellniz etal. that are still classified as O stars. The systematic and random accuracies of these classifications are substantially higher than previously attainable, because of the quality, quantity, and homogeneity of the data and analysis procedures. These results will enhance subsequent investigations in Galactic astronomy and stellar astrophysics. In the future, we will publish the rest of the survey, beginning with a second paper that will include most of the southern stars in Maíz Apellniz etal.
Instituto de Astrofísica de La Plata
description We present the first installment of a massive spectroscopic survey of Galactic O stars, based on new, high signal-to-noise ratio, R ∼ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog of Maíz Apellniz etal. and Sota etal. The spectral classification system is rediscussed and a new atlas is presented, which supersedes previous versions. Extensive sequences of exceptional objects are given, including types Ofc, ON/OC, Onfp, Of?p, Oe, and double-lined spectroscopic binaries. The remaining normal spectra bring this first sample to 184 stars, which is close to complete to B = 8 and north of δ = -20° and includes all of the northern objects in Maíz Apellniz etal. that are still classified as O stars. The systematic and random accuracies of these classifications are substantially higher than previously attainable, because of the quality, quantity, and homogeneity of the data and analysis procedures. These results will enhance subsequent investigations in Galactic astronomy and stellar astrophysics. In the future, we will publish the rest of the survey, beginning with a second paper that will include most of the southern stars in Maíz Apellniz etal.
publishDate 2011
dc.date.none.fl_str_mv 2011
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dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/193/2/24
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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