Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)

Photometric and polarimetric monitoring of the Wolf-Rayet (W-R) + O-type binary system HDE 311884 = WR 47 over many orbital cycles shows the clear effects of phase-dependent electron scattering of O-star light as the orbiting O companion shines through varying column density of W-R stellar wind mate...

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Autores principales: Moffat, A.F.J., Drissen, L., Robert, C., Lamontagne, R., Coziol, R., Mousseau, N., Niemela, V.S., Cerruti, M.A., Seggewiss, W., Van Weeren, N.
Formato: JOUR
Materias:
Polarization
Stars: eclipsing binaries
Stars: individual (HDE 311884)
Stars: mass loss
Stars: Wolf-Rayet
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0004637X_v350_n2_p767_Moffat
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0004637X_v350_n2_p767_Moffat
record_format dspace
spelling todo:paper_0004637X_v350_n2_p767_Moffat2023-10-03T14:01:32Z Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V) Moffat, A.F.J. Drissen, L. Robert, C. Lamontagne, R. Coziol, R. Mousseau, N. Niemela, V.S. Cerruti, M.A. Seggewiss, W. Van Weeren, N. Polarization Stars: eclipsing binaries Stars: individual (HDE 311884) Stars: mass loss Stars: Wolf-Rayet Photometric and polarimetric monitoring of the Wolf-Rayet (W-R) + O-type binary system HDE 311884 = WR 47 over many orbital cycles shows the clear effects of phase-dependent electron scattering of O-star light as the orbiting O companion shines through varying column density of W-R stellar wind material. In contrast to this wind-type eclipse, the stars themselves do not quite eclipse. Both photometry and polarimetry give a consistent estimate of the mass-loss rate of the W-R component: Ṁ ≅ 3 × 10-5 M⊙ yr-1. The orbital inclination, i ≅ 70°, along with the previously published velocity orbit, yields high masses: M(WNo) ≅ 48 M⊙ and M(O5: V) ≅ 57 M⊙. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v350_n2_p767_Moffat
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Polarization
Stars: eclipsing binaries
Stars: individual (HDE 311884)
Stars: mass loss
Stars: Wolf-Rayet
spellingShingle Polarization
Stars: eclipsing binaries
Stars: individual (HDE 311884)
Stars: mass loss
Stars: Wolf-Rayet
Moffat, A.F.J.
Drissen, L.
Robert, C.
Lamontagne, R.
Coziol, R.
Mousseau, N.
Niemela, V.S.
Cerruti, M.A.
Seggewiss, W.
Van Weeren, N.
Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
topic_facet Polarization
Stars: eclipsing binaries
Stars: individual (HDE 311884)
Stars: mass loss
Stars: Wolf-Rayet
description Photometric and polarimetric monitoring of the Wolf-Rayet (W-R) + O-type binary system HDE 311884 = WR 47 over many orbital cycles shows the clear effects of phase-dependent electron scattering of O-star light as the orbiting O companion shines through varying column density of W-R stellar wind material. In contrast to this wind-type eclipse, the stars themselves do not quite eclipse. Both photometry and polarimetry give a consistent estimate of the mass-loss rate of the W-R component: Ṁ ≅ 3 × 10-5 M⊙ yr-1. The orbital inclination, i ≅ 70°, along with the previously published velocity orbit, yields high masses: M(WNo) ≅ 48 M⊙ and M(O5: V) ≅ 57 M⊙.
format JOUR
author Moffat, A.F.J.
Drissen, L.
Robert, C.
Lamontagne, R.
Coziol, R.
Mousseau, N.
Niemela, V.S.
Cerruti, M.A.
Seggewiss, W.
Van Weeren, N.
author_facet Moffat, A.F.J.
Drissen, L.
Robert, C.
Lamontagne, R.
Coziol, R.
Mousseau, N.
Niemela, V.S.
Cerruti, M.A.
Seggewiss, W.
Van Weeren, N.
author_sort Moffat, A.F.J.
title Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
title_short Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
title_full Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
title_fullStr Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
title_full_unstemmed Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V)
title_sort photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star hde 311884 (wn6 + o5: v)
url http://hdl.handle.net/20.500.12110/paper_0004637X_v350_n2_p767_Moffat
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