Structure and fate of binary WR stars

  • Because most massive stars have been or will be affected by a companion during the course of their evolution, we cannot afford to neglect binaries when discussing the progenitors of supernovae and GRBs. Analyzing linear polarization in the emission lines of close binary systems allows us to probe the structures of these systems' winds and mass flows, making it possible to map the complex morphologies of the mass loss and mass transfer structures that shape their subsequent evolution. In Wolf-Rayet (WR) binaries, line polarization variations with orbital phase distinguish polarimetric signatures arising from lines that scatter near the stars from those that scatter far from the orbital plane. These far-scattering lines may form the basis for a "binary line-effect method" of identifying rapidly rotating WR stars (and hence GRB progenitor candidates) in binary systems.

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Metadaten
Author:J. L. Hoffman, J. R. Lomax
URN:urn:nbn:de:kobv:517-opus4-87737
Parent Title (English):Wolf-Rayet Stars : Proceedings of an International Workshop held in Potsdam, Germany, 1.–5. June 2015
Subtitle (English):Clues from spectropolarimetry
Document Type:Article
Language:English
Year of Completion:2015
Publishing Institution:Universität Potsdam
Release Date:2016/02/19
First Page:85
Last Page:88
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften
Publication Way:Universitätsverlag Potsdam
Collections:Universität Potsdam / Tagungsbände/Proceedings (nicht forlaufend) / Wolf-Rayet Stars: Proceedings of an International Workshop held in Potsdam, Germany, 1.–5. June 2015 / Wolf-Rainer Hamann, Andreas Sander, Helge Todt (Eds.)
Universität Potsdam / Tagungsbände/Proceedings (nicht forlaufend) / Wolf-Rayet Stars: Proceedings of an International Workshop held in Potsdam, Germany, 1.–5. June 2015 / Wolf-Rainer Hamann, Andreas Sander, Helge Todt (Eds.) / WR spectroscopy and polarimetry
Licence (German):License LogoKeine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht