K2 Variable Catalogue: Variable stars and eclipsing binaries in K2 campaigns 1 and 0
K2 Variable Catalogue: Variable stars and eclipsing binaries in K2 campaigns 1 and 0
复制标题
K2 变星目录：K2 活动 1 和 0 中的变星和食双星
DOI：
10.1051/0004-6361/201525889
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发表时间：
2015
影响因子：
6.5
通讯作者：
Armstrong D
中科院分区：
文献类型：
--
作者：
Armstrong D
目的我们已经创建了一个变星目录，发现从公开的K2使命数据搜索活动1和0。该星表提供了8395颗变星的标识符，其中包括199颗周期为60 d的候选食双星和3871颗周期或准周期天体，周期为20 d的Campaign 1和15 d的Campaign 0。这些搜索使用算法和人类分类的组合，导致每个对象作为一个日食二进制，正弦周期，准周期，或非周期性变量的分类器。变化的来源还没有确定，但可能出现在非食双星的情况下，从脉动或恒星活动。每个物体都与K2使命的可变星星相关客座观测者建议交叉匹配，在某些情况下指定变量类型。除趋势的光变曲线也比较lightcurves目前公开。ResultsThe产生的目录给出了ID，类型，周期，半振幅，和看到的变化范围。我们还为每个对象提供了消除趋势的光变曲线。
AimsWe have created a catalogue of variable stars found from a search of the publicly available K2 mission data from Campaigns 1 and 0. This catalogue provides the identifiers of 8395 variable stars, including 199 candidate eclipsing binaries with periods up to 60 d and 3871 periodic or quasi-periodic objects, with periods up to 20 d for Campaign 1 and 15 d for Campaign 0.MethodsLightcurves are extracted and detrended from the available data. These are searched using a combination of algorithmic and human classification, leading to a classifier for each object as an eclipsing binary, sinusoidal periodic, quasi periodic, or aperiodic variable. The source of the variability is not identified, but could arise in the non-eclipsing binary cases from pulsation or stellar activity. Each object is cross-matched against variable star related guest observer proposals to the K2 mission, which specifies the variable type in some cases. The detrended lightcurves are also compared to lightcurves currently publicly available.ResultsThe resulting catalogue gives the ID, type, period, semi-amplitude, and range of the variation seen. We also make available the detrended lightcurves for each object.