uvby photometry of the magnetic CP stars 20 Eridani, HR 1297, 12 Canis Majoris, and HD 134214
uvby photometry of the magnetic CP stars 20 Eridani, HR 1297, 12 Canis Majoris, and HD 134214
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磁性 CP 星 20 Eridani、HR 1297、12 Canis Majoris 和 HD 134214 的紫外光度测定
DOI：
10.1051/aas:2000261
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
S. Adelman
中科院分区：
文献类型：
--
作者：
S. Adelman
本文介绍了四个学院自动光电望远镜（FCAPT）对mCP星20 Eri、HR 1297、12 CMa和HD 134214的Diestrom gren紫外观测。Adelman和博伊斯发现，20 Eri的光变曲线在观测季节之间会发生变化。另外两个季节的观测也证实了这一行为，并导致了1.928890天的改进周期。对于HR 1297，推导出15.7490天的新周期。紫外光变曲线现在看起来在不同的观测季节都是一样的。Bohlender等人通过磁测量发现12 CMa是一个光度变量，其周期为2.18010天，对快速振荡的Ap星星HD 134214的观测证实了它缺乏与快速振荡无关的光度变化。
Dierential Stromgren uvby observations from the Four College Automated Photoelectric Telescope (FCAPT) are presented for the mCP stars 20 Eri, HR 1297, 12 CMa, and HD 134214. Adelman & Boyce found suggestions that the light curves of 20 Eri change between observing seasons. Observations for two additional seasons conrm this behavior and lead to an improved period of 1.928890 days. For HR 1297 a new period of 15.7490 days was derived. The uvby light curves now appear to be the same for dierent observing seasons. 12 CMa is found to be a photometric variable with the 2.18010 day period determined from magnetic measurements by Bohlender et al. Observations of the rapidly oscillating Ap star HD 134214 conrm the lack of photometric variability which is not associated with the rapid oscillations.