自旋M矮星双星GU Bootis的Spitzer 24微米测光曲线
The Spitzer 24-micron Photometric Light Curve of the Eclipsing M-dwarf Binary GU Bootis
摘要：
我们提出了一个精心控制的斯皮策24 \micron MIPS时间序列观测的低质量食双星GU牧夫座（GU Boo）。我们的数据涵盖了该系统的三次日食：两次连续事件和六周后的另一次日食。这项研究的主要目的是GU Boo光变曲线的长波长表征，独立于临边变暗，对表面特征（如斑点）不太敏感。其分析允许独立验证GU Boo的光学研究结果。我们的中红外结果与先前获得的系统参数显示出良好的一致性。此外，对视场中其他物体的光变曲线的分析用于表征{ \it Spitzer} MIPS-24在大约300- 2，000 $μ$ μ y之间的通量密度下的光度稳定性和重复性。我们发现，当通量密度大于1 mJy时，光变曲线中位值的均方根落在1- 4%范围内。
英文摘要：
We present a carefully controlled set of Spitzer 24 \micron MIPS time series observations of the low mass eclipsing binary star GU Boötis (GU Boo). Our data cover three secondary eclipses of the system: two consecutive events and an additional eclipse six weeks later. The study's main purpose is the long wavelength characterization of GU Boo's light curve, independent of limb darkening and less sensitive to surface features such as spots. Its analysis allows for independent verification of the results of optical studies of GU Boo. Our mid-infrared results show good agreement with previously obtained system parameters. In addition, the analysis of light curves of other objects in the field of view serves to characterize the photometric stability and repeatability of {\it Spitzer's} MIPS-24 at flux densities between approximately 300--2,000$μ$Jy. We find that the light curve root mean square about the median level falls into the 1--4% range for flux densities higher than 1 mJy.
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