Very massive binaries in R 136

Autores
Chené, André-Nicolas; Schnurr, O.; Crowther, Paul A.; Fernández Lajús, Eduardo Eusebio; Moffat, Anthony F. J.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
As recent observations have shown, luminous, hydrogen-rich WN5-7h stars (and their somewhat less extreme cousins, O3f/WN6 stars) are the most massive main-sequence stars known. However, not nearly enough very massive stars have been reliably weighed to yield a clear picture of the upper initial-mass function (IMF). We therefore have carried out repeated high-quality spectroscopy of four new O3f/WN6 and WN5-7h binaries in R136 in the LMC with GMOS at Gemini-South, to derive Keplerian orbits for both components, respectively, and thus to directly determine their masses. We also monitored binary candidates and other, previously unsurveyed stars, to increase the number of very massive stars that can be directly weighed.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
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:10915/134794
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Very massive binaries in R 136Chené, André-NicolasSchnurr, O.Crowther, Paul A.Fernández Lajús, Eduardo EusebioMoffat, Anthony F. J.Astronomíastars: fundamental parameters (masses)stars: Wolf-Rayet(stars:) binaries: eclipsing(stars:) binaries: spectroscopicAs recent observations have shown, luminous, hydrogen-rich WN5-7h stars (and their somewhat less extreme cousins, O3f/WN6 stars) are the most massive main-sequence stars known. However, not nearly enough very massive stars have been reliably weighed to yield a clear picture of the upper initial-mass function (IMF). We therefore have carried out repeated high-quality spectroscopy of four new O3f/WN6 and WN5-7h binaries in R136 in the LMC with GMOS at Gemini-South, to derive Keplerian orbits for both components, respectively, and thus to directly determine their masses. We also monitored binary candidates and other, previously unsurveyed stars, to increase the number of very massive stars that can be directly weighed.Facultad de Ciencias Astronómicas y Geofísicas2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf497-498http://sedici.unlp.edu.ar/handle/10915/134794enginfo:eu-repo/semantics/altIdentifier/issn/1743-9213info:eu-repo/semantics/altIdentifier/issn/1743-9221info:eu-repo/semantics/altIdentifier/doi/10.1017/s174392131101115xinfo: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:UNLP2025-10-22T17:13:01Zoai:sedici.unlp.edu.ar:10915/134794Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:13:01.477SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Very massive binaries in R 136
title Very massive binaries in R 136
spellingShingle Very massive binaries in R 136
Chené, André-Nicolas
Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
title_short Very massive binaries in R 136
title_full Very massive binaries in R 136
title_fullStr Very massive binaries in R 136
title_full_unstemmed Very massive binaries in R 136
title_sort Very massive binaries in R 136
dc.creator.none.fl_str_mv Chené, André-Nicolas
Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
author Chené, André-Nicolas
author_facet Chené, André-Nicolas
Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
author_role author
author2 Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
topic Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
dc.description.none.fl_txt_mv As recent observations have shown, luminous, hydrogen-rich WN5-7h stars (and their somewhat less extreme cousins, O3f/WN6 stars) are the most massive main-sequence stars known. However, not nearly enough very massive stars have been reliably weighed to yield a clear picture of the upper initial-mass function (IMF). We therefore have carried out repeated high-quality spectroscopy of four new O3f/WN6 and WN5-7h binaries in R136 in the LMC with GMOS at Gemini-South, to derive Keplerian orbits for both components, respectively, and thus to directly determine their masses. We also monitored binary candidates and other, previously unsurveyed stars, to increase the number of very massive stars that can be directly weighed.
Facultad de Ciencias Astronómicas y Geofísicas
description As recent observations have shown, luminous, hydrogen-rich WN5-7h stars (and their somewhat less extreme cousins, O3f/WN6 stars) are the most massive main-sequence stars known. However, not nearly enough very massive stars have been reliably weighed to yield a clear picture of the upper initial-mass function (IMF). We therefore have carried out repeated high-quality spectroscopy of four new O3f/WN6 and WN5-7h binaries in R136 in the LMC with GMOS at Gemini-South, to derive Keplerian orbits for both components, respectively, and thus to directly determine their masses. We also monitored binary candidates and other, previously unsurveyed stars, to increase the number of very massive stars that can be directly weighed.
publishDate 2010
dc.date.none.fl_str_mv 2010
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/10915/134794
url http://sedici.unlp.edu.ar/handle/10915/134794
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1743-9213
info:eu-repo/semantics/altIdentifier/issn/1743-9221
info:eu-repo/semantics/altIdentifier/doi/10.1017/s174392131101115x
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
497-498
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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score 12.982451

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