PHOTOMETRY OF VARIABLE STARS FROM DOME A, ANTARCTICA: RESULTS FROM THE 2010 OBSERVING SEASON
PHOTOMETRY OF VARIABLE STARS FROM DOME A, ANTARCTICA: RESULTS FROM THE 2010 OBSERVING SEASON
复制标题
DOI：
10.1088/0004-6256/146/6/139
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Lingzhi Wang;L. Macri;Lifan Wang;M. Ashley;X. Cui;Longlong Feng;X. Gong;J. Lawrence;Qiang Liu;D. Luong-Van;C. Pennypacker;Z. Shang;J. Storey;Huigen Yang;Ji Yang;Xiang-yan Yuan;D. York;Xu Zhou;Zhenxi Zhu;Zonghong Zhu
中科院分区：
文献类型：
--
作者：
Lingzhi Wang;L. Macri;Lifan Wang;M. Ashley;X. Cui;Longlong Feng;X. Gong;J. Lawrence;Qiang Liu;D. Luong-Van;C. Pennypacker;Z. Shang;J. Storey;Huigen Yang;Ji Yang;Xiang-yan Yuan;D. York;Xu Zhou;Zhenxi Zhu;Zonghong Zhu
我们介绍了中国小望远镜阵列在2010年南极冬季183天的一季观测结果。我们对9,125颗恒星进行了高节奏时间序列孔径光度测量，I≲15.3MAG位于以南天极为中心的23°2区域。我们确定了188颗变星，其中包括67个与2008年观测结果相关的新天体，这要归功于更广泛的天气覆盖范围、更深的星等限制和更大的视野。我们使用光度学数据集从穹顶A得出站点统计数据。基于两年的观测，我们发现在45%和75%的黑暗时间内，该站点由于云而造成的消光分别小于0.1和0.4mag。
We present results from a season of observations with the Chinese Small Telescope ARray, obtained over 183 days of the 2010 Antarctic winter. We carried out high-cadence time-series aperture photometry of 9125 stars with i ≲ 15.3 mag located in a 23 deg2 region centered on the south celestial pole. We identified 188 variable stars, including 67 new objects relative to our 2008 observations, thanks to broader synoptic coverage, a deeper magnitude limit, and a larger field of view. We used the photometric data set to derive site statistics from Dome A. Based on two years of observations, we find that extinction due to clouds at this site is less than 0.1 and 0.4 mag during 45% and 75% of the dark time, respectively.