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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 1990
Materias:
Polarization
Stars: eclipsing binaries
Stars: individual (HDE 311884)
Stars: mass loss
Stars: Wolf-Rayet
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v350_n2_p767_Moffat
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 paper:paper_0004637X_v350_n2_p767_Moffat
record_format dspace
spelling paper:paper_0004637X_v350_n2_p767_Moffat2023-06-08T14:28:29Z Photometric and polarimetric variability and mass-loss rate of the massive binary wolf-rayet star HDE 311884 (WN6 + O5: V) 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⊙. 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v350_n2_p767_Moffat 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
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⊙.
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)
publishDate 1990
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v350_n2_p767_Moffat
http://hdl.handle.net/20.500.12110/paper_0004637X_v350_n2_p767_Moffat
_version_ 1768542718583111680

Ejemplares similares