特洛伊双星小行星
Fraction of Contact Binary Trojan Asteroids
摘要：
我们提出的114木星特洛伊小行星进行的光学光变曲线调查的结果，以确定接触双星的分数。采用稀疏抽样方法评估小行星的光度范围，并将显示最大光度范围的小行星作为详细后续观测的目标。这次巡天发现了两颗特洛伊小行星，（17365）和（29314），它们的光变曲线范围很大（约1等），自转周期很长（每天小于2转），符合接触双星的性质。这两颗小行星的光学光变曲线与Roche二元平衡模型相匹配。使用这些二元模型，我们发现了~600 kg/m^3和800 kg/m^3的低密度，这表明内部是多孔的。接触双星的比例估计在6%到10%之间，与柯伊伯带的比例相当。特洛伊云中的总二进制部分（包括宽对和密对）必须更高。
英文摘要：
We present the results of an optical lightcurve survey of 114 Jovian Trojan asteroids conducted to determine the fraction of contact binaries. Sparse-sampling was used to assess the photometric range of the asteroids and those showing the largest ranges were targeted for detailed follow-up observations. This survey led to the discovery of two Trojan asteroids, (17365) and (29314) displaying large lightcurve ranges (~1 magnitude) and long rotation periods (< 2 rotations per day consistent with a contact binary nature. The optical lightcurves of both asteroids are well matched by Roche binary equilibrium models. Using these binary models, we find low densities of ~600 kg/m^3 and 800 kg/m^3, suggestive of porous interiors. The fraction of contact binaries is estimated to be between 6% and 10%, comparable to the fraction in the Kuiper Belt. The total binary fraction in the Trojan clouds (including both wide and close pairs) must be higher.
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。
