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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83946
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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:UNLP2025-10-15T11:08:02Zoai: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:13292025-10-15 11:08:02.862SEDICI (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 |
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2011 |
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eng |
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