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Discovery of a magnetic field in the O9 sub-giant star HD 57682 by the MiMeS Collaboration

Bouret, J. -C.; Wade, G. A.; Neiner, C. +10 more

We report the detection of a strong, organized magnetic field in the O9IV star HD 57682, using spectropolarimetric observations obtained with ESPaDOnS at the 3.6-m Canada-France-Hawaii Telescope within the context of the Magnetism in Massive Stars (MiMeS) Large Programme. From the fitting of our spectra using non-local thermodynamic equilibrium mo…

A survey for post-common-envelope binary stars using GALEX and SDSS photometry

Gänsicke, B. T.; Marsh, T. R.; Maxted, P. F. L. +5 more

We report the first results of our programme to obtain multi-epoch radial velocity measurements of stars with a strong far-ultraviolet excess to identify post-common-envelope binaries (PCEBs). The targets have been identified using optical photometry from Sloan Digital Sky Survey (SDSS) DR4, ultraviolet photometry from Galaxy Evolution Explorer (G…