Observations made with the Extreme Ultraviolet Explorer (EUVE) of the two bright stars e CMa (B2 II) and fl CMa (Bl II-III) are discussed. The photospheres show excess EUV ra-diation. The wind of e CMa exhibits the Bowen Fluorescence mechanism, along with high ionization stages that help explain the nature of the wind shocks. The pulsation and beat phenomena exhibited by the variable star /? CMa suggest that deposition of residual pulsation energy might heat and modify the structure of the atmospheres of early-type stars near the /? Cephei strip. The possibility that many other B stars show a large excess Lyman continuum radiation is considered as a possible source of the ionization of the warm ionized medium (WIM) in the galactic ISM.
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机译：讨论了用两亮恒星E CMA（B2II）和FL CMA（BL II-III）的极端紫外探险器（EUVE）制成的观察结果。照片显示出过量的EUV Ra-Diation。 E CMA的风呈现鲍氏荧光机制，以及高电离阶段，有助于解释风冲击的性质。可变星光呈现的脉动和击败现象？ CMA表明，剩余脉动能量的沉积可能会加热和修改/靠近/θ附近的早期恒星大气的结构cephei strib。许多其他B颗星的可能性显示出大过量的Lyman连续辐射被认为是半乳扁ISM中温热电离介质（WiM）的电离的可能源。
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