Kepler-INT调查的初始数据发布
Initial data release of the Kepler-INT Survey
摘要：
本文介绍了开普勒-INT巡天（KIS）的第一次数据发布，该巡天覆盖了天鹅座和天琴座的116 deg 2区域。开普勒领域是迄今为止最密集的凌日行星搜索的目标。尽管开普勒任务提供了优越的时间序列测光，对恒星变化的所有领域都有巨大的影响，但它的领域缺乏完全达到开普勒仪器选择各种目标所需的混淆极限的光学测光。出于这个原因，我们遵循IPHAS和UVEX银道面调查中使用的观测策略和数据简化方法，以产生开普勒场的深度光学调查。这一首次发布的数据涉及2011年5月至8月期间使用拉帕尔马岛上的艾萨克牛顿望远镜拍摄的数据。使用了四个宽带滤波器，U，g，r，i，以及一个窄带滤波器，Halalpha，在织女星系统中达到大约20等的10-sigma极限。覆盖约50 deg 2的观测，即约一半的视场，通过了我们的质量控制阈值，构成了第一次数据发布。我们得到一个全球光度校准放置KIS的星等尽可能接近开普勒输入目录（KIC）光度。最初的数据发布目录包含来自所有良好测光领域的约600万个源，可从KIS网页下载，也可通过MAST下载。
英文摘要：
This paper describes the first data release of the Kepler-INT Survey (KIS), that covers a 116 deg2 region of the Cygnus and Lyra constellations. The Kepler field is the target of the most intensive search for transiting planets to date. Despite the fact that the Kepler mission provides superior time series photometry, with an enormous impact on all areas of stellar variability, its field lacks optical photometry complete to the confusion limit of the Kepler instrument necessary for selecting various classes of targets. For this reason, we follow the observing strategy and data reduction method used in the IPHAS and UVEX galactic plane surveys in order to produce a deep optical survey of the Kepler field. This initial release concerns data taken between May and August 2011, using the Isaac Newton Telescope on the island of La Palma. Four broadband filters were used, U, g, r, i, as well as one narrowband one, Halpha, reaching down to a 10-sigma limit of around 20th mag in the Vega system. Observations covering around 50 deg2, thus about half of the field, passed our quality control thresholds and constitute this first data release. We derive a global photometric calibration by placing the KIS magnitudes as close as possible to the Kepler Input Catalog (KIC) photometry. The initial data release catalogue containing around 6 million sources from all the good photometric fields is available for download from the KIS webpage, as well as via MAST.
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