Very massive binaries in R 136

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...

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Detalles Bibliográficos
Autores principales: Chené, André-Nicolas, Schnurr, O., Crowther, Paul A., Fernández Lajús, Eduardo Eusebio, Moffat, Anthony F. J.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/134794
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-134794
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
spellingShingle Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
Chené, André-Nicolas
Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
Very massive binaries in R 136
topic_facet Astronomía
stars: fundamental parameters (masses)
stars: Wolf-Rayet
(stars:) binaries: eclipsing
(stars:) binaries: spectroscopic
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.
format Articulo
Articulo
author Chené, André-Nicolas
Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
author_facet Chené, André-Nicolas
Schnurr, O.
Crowther, Paul A.
Fernández Lajús, Eduardo Eusebio
Moffat, Anthony F. J.
author_sort Chené, André-Nicolas
title Very massive binaries in R 136
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
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/134794
work_keys_str_mv AT cheneandrenicolas verymassivebinariesinr136
AT schnurro verymassivebinariesinr136
AT crowtherpaula verymassivebinariesinr136
AT fernandezlajuseduardoeusebio verymassivebinariesinr136
AT moffatanthonyfj verymassivebinariesinr136
bdutipo_str Repositorios
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