We present the results of a time series analysis of 130 échelle spectra of Ori (B0 Ia), acquired over seven observing seasons between 1998 and 2006 at Ritter Observatory. The equivalent widths of Hα (net) and He I λ5876 were measured and radial velocities were obtained from the central absorption of He I λ5876. Temporal variance spectra (TVS) revealed significant wind variability in both Hα and He I λ5876. The He I TVS have a double-peaked profile consistent with radial velocity oscillations. A periodicity search was carried out on the equivalent width and radial velocity data, as well as on wavelength-binned spectra. This analysis has revealed several periods in the variability with timescales of two to seven days. Many of these periods exhibit sinusoidal modulation in the associated phase diagrams. Several of these periods were present in both Hα and He I, indicating a possible connection between the wind and the photosphere. Due to the harmonic nature of these periods, stellar pulsations may be the origin of some of the observed variability. Periods on the order of the rotational period were also detected in the He I line in the 1998-1999 season and in both lines during the 2004-2005 season. These periods may indicate rotational modulation due to structure in the wind.
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机译：我们介绍了Ori（B0 Ia）的130échelle光谱的时间序列分析结果，该光谱在1998年至2006年之间的七个观测季节由Ritter天文台采集。测量了Hα（净）和He Iλ5876的等效宽度，并从He Iλ5876的中心吸收获得了径向速度。时间方差谱（TVS）显示Hα和He Iλ5876均具有显着的风变率。 He I TVS具有与径向速度振荡一致的双峰轮廓。在等效宽度和径向速度数据以及波长合并光谱上进行周期性搜索。这项分析揭示了可变性的几个时期，其时标为2至7天。这些周期中的许多周期在相关的相位图中都显示出正弦调制。 Hα和He I中都存在其中几个周期，这表明风和光圈之间可能存在联系。由于这些周期的谐波性质，恒星脉动可能是某些观测到的变化的起源。在1998-1999年度的He I线和2004-2005年度的两个线中也检测到轮换周期的周期。这些周期可能指示由于风中结构引起的旋转调制。
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