Line profile variations in eta Ori

Eta Orionis (HD35411) is a multiple system which consists of at least four early B-type stars. In the present paper we focus on the double-lined spectroscopic eclipsing pair...猎户座η星（Eta Orionis, HD35411）是一个至少包含四颗早型B型星的多星系统。本文聚焦于该系统中的双谱线分光食双星对。