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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/134794
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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:UNLP2025-09-29T11:32:06Zoai: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:13292025-09-29 11:32:07.165SEDICI (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 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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alira@sedici.unlp.edu.ar |
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