Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21341002l&link_type=abstract
American Astronomical Society, AAS Meeting #213, #410.02; Bulletin of the American Astronomical Society, Vol. 41, p.211
Astronomy and Astrophysics
Astrophysics
Scientific paper
Beta Lyrae is an eclipsing binary star system with a complex geometry which offers a unique testing ground for binary evolution and mass loss theories. The primary, mass-losing star in the system has filled its Roche lobe while the mass-gaining star is completely obscured by a thick accretion disk. Polarimetry can provide important information about the physical structure of complex systems, which makes it a useful observational tool in the case of beta Lyrae; in fact, the existence of bipolar jets in this system was confirmed by polarimetric observations. Here we present 6 years of new and recalibrated spectropolarimetric data, taken with the University of Wisconsin's Half-Wave Spectropolarimeter (HPOL). We discuss these data with particular emphasis on their implications for the disk-jet geometry in beta Lyrae. This research is supported by funding from the NASA Astrophysics Data Analysis Program and the NSF Stellar Astronomy and Astrophysics Program.
Hoffman Jennifer L.
Lomax Jamie Renae
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