阿西亚戈食双星计划。IV。SZ鹿豹座，四重食系中的一颗造父β星
Asiago eclipsing binaries program. IV. SZ Camelopardalis, a beta Cephei pulsator in a quadruple, eclipsing system
摘要：
本文对复系统早型食双星SZCam（O 9 IV + B0.5V）进行了分光光度分析，它由一对轨道周期为P=2.7天的食星SB 2绕一对轨道周期为P =2.8天的非食星SB 1长轨道运行（约55年）组成。我们已经重建的光谱的各个组成部分的SZ凸轮从所观察到的复合光谱使用光谱解纠缠技术。我们使用它们与广泛和准确的BVI CCD测光，以获得轨道的解决方案。我们的测光揭示了在SZ Cam分级系统中存在一个β Cep变量，可能位于非食SB 1对内。脉动周期为0.33265+/-0.00005天，在B波段观测到的总振幅为0.0105 +/-0.0005 mag. NLTE分析的解纠缠光谱提供了所有三个组成部分的大气参数，与来自轨道解的参数一致。
英文摘要：
We present a spectroscopic and photometric analysis of the multiple system and early-type eclipsing binary SZ Cam (O9IV + B0.5V), which consists of an eclipsing SB2 pair of orbital period P=2.7 days in a long orbit (about 55 yrs) around a non-eclipsing SB1 pair of orbital period P=2.8 days. We have reconstructed the spectra of the individual components of SZ Cam from the observed composite spectra using the technique of spectral disentangling. We used them together with extensive and accurate BVI CCD photometry to obtain an orbital solution. Our photometry revealed the presence of a beta Cep variable in the SZ Cam hierarchical system, probably located within the non-eclipsing SB1 pair. The pulsation period is 0.33265+/-0.00005 days and the observed total amplitude in the B band is 0.0105 +/- 0.0005 mag. NLTE analysis of the disentangled spectra provided atmospheric parameters for all three components, consistent with those derived from orbital solution.
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