论文标题
K2测量的十个百分钟的光曲线
Light curves of ten Centaurs from K2 measurements
论文作者
论文摘要
在这里，我们在K2任务的框架内使用开普勒空间望远镜进行了十个百分点的可见范围光曲线观测结果。在六个病例中获得了明确定义的周期性光曲线，使我们得出旋转周期，这显着增加具有已知旋转特性的半人马数。 （471931）2013 PH44和（250112）2002 KY14的低振幅光曲线可以通过反照率变化，二进制或拉长形状来解释。 （353222）2009 YD7和（514312）2016 AE193可能会旋转细长的物体，而2017 CX33和2012 VU85是最有前途的二进制候选物，由于它们的缓慢旋转和较高的光曲线曲线幅度。 （463368）2012 VU85的旋转周期最长，p = 56.2h，在半人马场之间观察到。针对两个潜在二进制的P> 20H旋转周期强调了太阳系目标的长，不间断的时间序列光度法的重要性，这些目标只能从航天器中适当地进行，例如K2任务中的开普勒和当前运行的苔丝任务。
Here we present the results of visible range light curve observations of ten Centaurs using the Kepler Space Telescope in the framework of the K2 mission. Well defined periodic light curves are obtained in six cases allowing us to derive rotational periods, a notable increase in the number of Centaurs with known rotational properties. The low amplitude light curves of (471931) 2013 PH44 and (250112) 2002 KY14 can be explained either by albedo variegations, binarity or elongated shape. (353222) 2009 YD7 and (514312) 2016 AE193 could be rotating elongated objects, while 2017 CX33 and 2012 VU85 are the most promising binary candidates due to their slow rotations and higher light curve amplitudes. (463368) 2012 VU85 has the longest rotation period, P=56.2h observed among Centaurs. The P>20h rotation periods obtained for the two potential binaries underlines the importance of long, uninterrupted time series photometry of solar system targets that can suitably be performed only from spacecraft, like the Kepler in the K2 mission, and the currently running TESS mission.
