Abstract
view Abstract Citations (42) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometry and Polarimetry of the Unusual WN5 Star EZ Canis Majoris Drissen, L. ; Robert, C. ; Lamontagne, R. ; Moffat, A. F. J. ; St-Louis, N. ; van Weeren, N. ; van Genderen, A. M. Abstract New high-precision polarimetric data (based on four observing runs spanning 16 months and a nearly contiguous 62-night photometric run) are presented for the unique Wolf-Rayet star of type WN5, EZ CMa. Even though the shape of the polarization curve changes from one run to the next, the previously known 3.77-d period is always present in each run of data; no significant circular polarization variation is detected. The data are interpreted in terms of a binary system with a low-mass (probably compact) companion or rotating spots on a single star. The former is preferred; if correct, EZ CMa would fill the heretofore missing link in the evolution of massive binaries. Publication: The Astrophysical Journal Pub Date: August 1989 DOI: 10.1086/167715 Bibcode: 1989ApJ...343..426D Keywords: Astronomical Photometry; Binary Stars; Polarimetry; Stellar Evolution; Wolf-Rayet Stars; Circular Polarization; Light Curve; Stellar Color; Stellar Rotation; X Rays; Astrophysics full text sources ADS | data products SIMBAD (3)
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