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arXiv 1503.01829astro-ph.SRastro-ph.EP
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开普勒观测双星。VI。在K2第0次生产活动数据集中识别重复二进制文件

Kepler Eclipsing Binary Stars. VI. Identification of Eclipsing Binaries in the K2 Campaign 0 Data-set

Daryll M. LaCourse, Kian J. Jek, Thomas L. Jacobs, Troy Winarski, Tabetha S. Boyajian, Saul A. Rappaport, Roberto Sanchis-Ojeda, Kyle E. Conroy, Lorne Nelson, T… 展开作者

Daryll M. LaCourse, Kian J. Jek, Thomas L. Jacobs, Troy Winarski, Tabetha S. Boyajian, Saul A. Rappaport, Roberto Sanchis-Ojeda, Kyle E. Conroy, Lorne Nelson, Tom Barclay, Debra A. Fischer, Joseph R. Schmitt, Ji Wang, Keivan G. Stassun, Joshua Pepper, Jeffrey L. Coughlin, Avi Shporer, Andrej Prša

摘要:

最初的{ \it开普勒}任务除了探测到大量的系外行星外,还观测和表征了2400多个食双星。尽管用于稳定仪器的两个反作用轮出现机械故障且随后无法恢复,但{ \it Kepler}卫星继续在其重新设计的{ \it K2}任务中收集数据,该任务沿黄道面测量一系列区域。在此,我们介绍了第一个完整基线{ \it K2}数据发布的分析:活动0数据集。在这7761条光变曲线中,我们总共发现了207个食双星。其中97个是以前没有发现的新发现。我们对这些天体的像素级分析也导致了几个假阳性的识别(观察到的目标被邻近的食双星污染),以及两个短周期系外行星候选者的偶然发现。我们提供了这些食系统的目录交叉匹配的源标识,轨道周期,形态和星历。我们还描述了K2样本纳入开普勒双星表\footnote{\url{keplerebs.villanova.edu/k2}},目前光谱的后续观测有限的选择九个系统,并讨论了即将到来的{ \it K2}运动的前景。

英文摘要:

The original {\it Kepler} mission observed and characterized over 2400 eclipsing binaries in addition to its prolific exoplanet detections. Despite the mechanical malfunction and subsequent non-recovery of two reaction wheels used to stabilize the instrument, the {\it Kepler} satellite continues collecting data in its repurposed {\it K2} mission surveying a series of fields along the ecliptic plane. Here we present an analysis of the first full baseline {\it K2} data release: the Campaign 0 data-set. In the 7761 light curves, we have identified a total of 207 eclipsing binaries. Of these, 97 are new discoveries that were not previously identified. Our pixel-level analysis of these objects has also resulted in identification of several false positives (observed targets contaminated by neighboring eclipsing binaries), as well as the serendipitous discovery of two short period exoplanet candidates. We provide catalog cross-matched source identifications, orbital periods, morphologies and ephemerides for these eclipsing systems. We also describe the incorporation of the K2 sample into the Kepler Eclipsing Binary Catalog\footnote{\url{keplerebs.villanova.edu/k2}}, present spectroscopic follow-up observations for a limited selection of nine systems, and discuss prospects for upcoming {\it K2} campaigns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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