The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars

Autores
Sota, Alfredo; Maíz Apellániz, Jesús; Morrell, Nidia Irene; Barbá, Rodolfo Héctor; Walborn, Nolan Revere; Gamen, Roberto Claudio; Arias, Julia Inés; Alfaro, Emilio J.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GOSC, all of them south of δ = -20°, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of spectroscopically classified Galactic O stars complete to B = 8, bringing the total number of published GOSSS stars to 448. Extensive sequences of exceptional objects are given, including the early Of/WN, O Iafpe, Ofc, ON/OC, Onfp, Of?p, and Oe types, as well as double/triple-lined spectroscopic binaries. The new spectral subtype O9.2 is also discussed. The magnitude and spatial distributions of the observed sample are analyzed. We also present new results from OWN, a multi-epoch high-resolution spectroscopic survey coordinated with GOSSS that is assembling the largest sample of Galactic spectroscopic massive binaries ever attained. The OWN data combined with additional information on spectroscopic and visual binaries from the literature indicate that only a very small fraction (if any) of the stars with masses above 15-20 Mare born as single systems. In the future we will publish the rest of the GOSSS survey, which is expected to include over 1000 Galactic O stars.
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
binaries: general
binaries: spectroscopic
stars: early-type
stars: emission-line, Be
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:10915/85564

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern starsSota, AlfredoMaíz Apellániz, JesúsMorrell, Nidia IreneBarbá, Rodolfo HéctorWalborn, Nolan RevereGamen, Roberto ClaudioArias, Julia InésAlfaro, Emilio J.Ciencias Astronómicasbinaries: generalbinaries: spectroscopicstars: early-typestars: emission-line, BesurveysWe present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GOSC, all of them south of δ = -20°, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of spectroscopically classified Galactic O stars complete to B = 8, bringing the total number of published GOSSS stars to 448. Extensive sequences of exceptional objects are given, including the early Of/WN, O Iafpe, Ofc, ON/OC, Onfp, Of?p, and Oe types, as well as double/triple-lined spectroscopic binaries. The new spectral subtype O9.2 is also discussed. The magnitude and spatial distributions of the observed sample are analyzed. We also present new results from OWN, a multi-epoch high-resolution spectroscopic survey coordinated with GOSSS that is assembling the largest sample of Galactic spectroscopic massive binaries ever attained. The OWN data combined with additional information on spectroscopic and visual binaries from the literature indicate that only a very small fraction (if any) of the stars with masses above 15-20 Mare born as single systems. In the future we will publish the rest of the GOSSS survey, which is expected to include over 1000 Galactic O stars.Instituto de Astrofísica de La Plata2014info: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/10915/85564enginfo:eu-repo/semantics/altIdentifier/issn/0067-0049info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/211/1/10info:eu-repo/semantics/reference/hdl/10915/83946info: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:UNLP2025-09-29T11:16:24Zoai:sedici.unlp.edu.ar:10915/85564Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:25.04SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
title The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
spellingShingle The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
Sota, Alfredo
Ciencias Astronómicas
binaries: general
binaries: spectroscopic
stars: early-type
stars: emission-line, Be
surveys
title_short The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
title_full The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
title_fullStr The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
title_full_unstemmed The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
title_sort The Galactic O-Star Spectroscopic Survey (GOSSS) : II. Bright southern stars
dc.creator.none.fl_str_mv Sota, Alfredo
Maíz Apellániz, Jesús
Morrell, Nidia Irene
Barbá, Rodolfo Héctor
Walborn, Nolan Revere
Gamen, Roberto Claudio
Arias, Julia Inés
Alfaro, Emilio J.
author Sota, Alfredo
author_facet Sota, Alfredo
Maíz Apellániz, Jesús
Morrell, Nidia Irene
Barbá, Rodolfo Héctor
Walborn, Nolan Revere
Gamen, Roberto Claudio
Arias, Julia Inés
Alfaro, Emilio J.
author_role author
author2 Maíz Apellániz, Jesús
Morrell, Nidia Irene
Barbá, Rodolfo Héctor
Walborn, Nolan Revere
Gamen, Roberto Claudio
Arias, Julia Inés
Alfaro, Emilio J.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
binaries: general
binaries: spectroscopic
stars: early-type
stars: emission-line, Be
surveys
topic Ciencias Astronómicas
binaries: general
binaries: spectroscopic
stars: early-type
stars: emission-line, Be
surveys
dc.description.none.fl_txt_mv We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GOSC, all of them south of δ = -20°, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of spectroscopically classified Galactic O stars complete to B = 8, bringing the total number of published GOSSS stars to 448. Extensive sequences of exceptional objects are given, including the early Of/WN, O Iafpe, Ofc, ON/OC, Onfp, Of?p, and Oe types, as well as double/triple-lined spectroscopic binaries. The new spectral subtype O9.2 is also discussed. The magnitude and spatial distributions of the observed sample are analyzed. We also present new results from OWN, a multi-epoch high-resolution spectroscopic survey coordinated with GOSSS that is assembling the largest sample of Galactic spectroscopic massive binaries ever attained. The OWN data combined with additional information on spectroscopic and visual binaries from the literature indicate that only a very small fraction (if any) of the stars with masses above 15-20 Mare born as single systems. In the future we will publish the rest of the GOSSS survey, which is expected to include over 1000 Galactic O stars.
Instituto de Astrofísica de La Plata
description We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GOSC, all of them south of δ = -20°, for a total number of 258 O stars. We also revise the northern sample of Paper I to provide the full list of spectroscopically classified Galactic O stars complete to B = 8, bringing the total number of published GOSSS stars to 448. Extensive sequences of exceptional objects are given, including the early Of/WN, O Iafpe, Ofc, ON/OC, Onfp, Of?p, and Oe types, as well as double/triple-lined spectroscopic binaries. The new spectral subtype O9.2 is also discussed. The magnitude and spatial distributions of the observed sample are analyzed. We also present new results from OWN, a multi-epoch high-resolution spectroscopic survey coordinated with GOSSS that is assembling the largest sample of Galactic spectroscopic massive binaries ever attained. The OWN data combined with additional information on spectroscopic and visual binaries from the literature indicate that only a very small fraction (if any) of the stars with masses above 15-20 Mare born as single systems. In the future we will publish the rest of the GOSSS survey, which is expected to include over 1000 Galactic O stars.
publishDate 2014
dc.date.none.fl_str_mv 2014
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/10915/85564
url http://sedici.unlp.edu.ar/handle/10915/85564
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0067-0049
info:eu-repo/semantics/altIdentifier/doi/10.1088/0067-0049/211/1/10
info:eu-repo/semantics/reference/hdl/10915/83946
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)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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