【摘要】 本文发表了ζAur在1979—1980年食期间进行的六个窄波段(峰值波长为3520,3940,4260,5020,6595(?)_ω和6560(?)_n)及UBV的光电测光结果。根据31个夜晚的有效观测资料得到了食的各不同位相的光变曲线。利用窄波段的光变曲线资料可以客观地确定食的第二、第三接触时刻,从而较准确地定出了食甚时刻,推算出ζAur食的新的历元公式 由图1可以明显地看出食的深度随观测的有效波长的减小而增加。窄波段3940的测光结果与分光观测的CaⅡ的K线变化一致,揭示了ζAur的K型超巨星在1979—1980年食期间色球活动比较激烈。 ζAur的UBV测光给出了关于ζAur系统的食深度及K型子星的V,B-V和U-B值,并与以前的结果作了比较,其结果相当一致。更多还原

【Abstract】 Photoelectric observations of ξ Aur during the 1979-1980 eclipse were obtained at the Xing-Long Station of Beijing Observatory with the 60-cm reflector and its photometer from Nov. 17, 1979. The observations were made in six narrow-band and the standard UBV systems. The central wavelengths of the narrow-hand filters are in AA 3520, 3940, 4240, 5020, 6595 w and 6560 n A, respectively. The light curves were shown in fig. 1 and fig. 2. The second and third contact points were determined well from them. The moment of the mid-eclipse obtained turns out to be hel. J. D. 2444219. 643. The new formula for the moments of minima is Min.=J. D. 2444219. 643+972. 176 B. The photometric feature of the narrowband λ 3940 is consistent with that of spectroscopic observations of CaII K line. The photoelectric observations in λ 6595 w and 6560 n during totality indicate that it seems to be a pulsation, the period of which is several decades minutes. The values of our V, B-V and U-B for ξ Aur are in agreement with other observers’.更多还原