在海王星的South Pole上看到双重
Seeing Double at Neptune's South Pole
摘要：
凯克在2007年7月26日从UT拍摄的海王星近红外图像显示，通常在海王星南极几度范围内观察到的云特征已经分裂成一对亮点。仔细确定的盘中心将云中心放在-89.07 +/-0.06和-87.84 +/- 0.06度行星中心纬度。如果建模为光学厚，完美的反射层，我们发现这对功能被约束到对流层，在压力大于0.4巴。截至2007年7月28日，具有可比分辨率的图像仅显示南极附近的单一特征。这些绕极云形态的变化表明，它们可能形成于海王星南极涡旋周围的强对流区域。
英文摘要：
Keck near-infrared images of Neptune from UT 26 July 2007 show that the cloud feature typically observed within a few degrees of Neptune's south pole had split into a pair of bright spots. A careful determination of disk center places the cloud centers at -89.07 +/- 0 .06 and -87.84 +/- 0.06 degrees planetocentric latitude. If modeled as optically thick, perfectly reflecting layers, we find the pair of features to be constrained to the troposphere, at pressures greater than 0.4 bar. By UT 28 July 2007, images with comparable resolution reveal only a single feature near the south pole. The changing morphology of these circumpolar clouds suggests they may form in a region of strong convection surrounding a Neptunian south polar vortex.
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。
