Photometric analysis in the Kepler Science Operations Center pipeline
Photometric analysis in the Kepler Science Operations Center pipeline
复制标题
开普勒科学运营中心管道中的光度分析
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
T. Klaus
中科院分区：
文献类型：
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作者：
J. Twicken;B. Clarke;S. Bryson;P. Tenenbaum;Hayley Wu;J. Jenkins;F. Girouard;T. Klaus
我们描述了光度分析(PA)软件组件及其在开普勒科学操作中心(SOC)科学处理管道中的上下文。这个模块的主要任务是计算超过160,000个长节奏(~30分钟)和512个短节奏(~1分钟)恒星目标的光度通量和光中心(质心)，从它们各自光圈中的校准像素。我们讨论了长和短节奏PA的科学算法：宇宙线清洗；背景估计和去除；孔径光度测量；以及通量加权质心。我们讨论了科学算法中不确定性的端到端传播。最后，我们给出了来自开普勒飞行数据的光度光圈、原始通量光曲线和质心时间序列的例子。PA光曲线、质心时间序列和重心时间戳校正被输出到空间望远镜[科学研究所](MAST)的多任务档案馆，并根据NASA/开普勒数据发布政策向公众提供。
We describe the Photometric Analysis (PA) software component and its context in the Kepler Science Operations Center (SOC) Science Processing Pipeline. The primary tasks of this module are to compute the photometric flux and photocenters (centroids) for over 160,000 long cadence (~thirty minute) and 512 short cadence (~one minute) stellar targets from the calibrated pixels in their respective apertures. We discuss science algorithms for long and short cadence PA: cosmic ray cleaning; background estimation and removal; aperture photometry; and flux-weighted centroiding. We discuss the end-to-end propagation of uncertainties for the science algorithms. Finally, we present examples of photometric apertures, raw flux light curves, and centroid time series from Kepler flight data. PA light curves, centroid time series, and barycentric timestamp corrections are exported to the Multi-mission Archive at Space Telescope [Science Institute] (MAST) and are made available to the general public in accordance with the NASA/Kepler data release policy.