Discovery of a strong magnetic field on the O star HD 191612: new clues to the future of θ1 Orionis C
Discovery of a strong magnetic field on the O star HD 191612: new clues to the future of θ1 Orionis C
Abstract From observations made with the ESPaDOnS spectropolarimeter, recently installed on the 3.6-m Canada-France-Hawaii Telescope, we report the discovery of a strong magnetic field in the Of?p spectrum variable HD 191612 - only the second known magnetic O star (following θ1 Ori C). The stability of the observed Zeeman signature …