Starspot photometry with robotic telescopes. $UBV(RI)_{\rm C}$ and $by$ light curves of 47 active stars in 1996/97
Starspot photometry with robotic telescopes. $UBV(RI)_{\rm C}$ and $by$ light curves of 47 active stars in 1996/97
复制标题
DOI：
10.1051/aas:1999116
复制
发表时间：
1999-11
期刊：
影响因子：
--
通讯作者：
K. Strassmeier;E. Serkowitsch;T. Granzer
中科院分区：
文献类型：
--
作者：
K. Strassmeier;E. Serkowitsch;T. Granzer
我们展示了从1996年10月到1997年6月对47颗恒星的连续多色光度测定。总共7073个V (RI)c， UBV，a和by数据点，每个数据点是三个单独读数的平均值，由亚利桑那州南部费尔伯恩天文台的三个自动光电望远镜（apt）获得。我们的大多数目标是光谱型为G到K的色球活跃的单星和双星，但我们的样本中也有4个主序前天体和3个脉动恒星。光的变化通常是由于不对称斑点恒星表面的旋转调制，因此精确的旋转周期及其季节变化是由傅里叶分析确定的。我们还报道了CrB （A0V）的光度变化周期为0.44534天。所有数据均以数字形式提供。
We present continuous multicolor photometry for 47 stars from October 1996 through June 1997. Altogether, 7073 V (RI)c, UBV ,a ndby data points, each the average of three individual readings, were acquired with three automatic photoelectric telescopes (APTs) at Fairborn Observatory in southern Arizona. Most of our targets are chromospherically active single and binary stars of spectral type G to K but there are also four pre-main-sequence objects and three pulsating stars in our sample. The light variability is generally due to rotational modulation of an asymmetrically spotted stellar surface and therefore precise rotational periods and their seasonal variations are determined from Fourier analysis. We also report on photometric variations of CrB (A0V) with a period of 0.44534 days. All data are available in numerical form.