论文标题
年龄对超级毕业生和亚纽扣的相对频率的影响
The Influence of Age on the Relative Frequency of Super-Earths and Sub-Neptunes
论文作者
论文摘要
越来越多的证据表明，开普勒任务发现的近距离行星人口是通过大气损失雕刻的，尽管这种演变的典型时间尺度没有得到很好的约束。在高度完整的行星寄主样本中，可以使用超级捕捉和亚本次检测的相对分数的年龄依赖性，可用于限制某些小行星失去大气的速度。使用加利福尼亚州的调查（CKS）样本，我们发现证据表明，超级捕集与亚新次探测的比率从1-10 GYR单调上升。我们的结果与一项独立的研究非常吻合，该研究的重点比太阳更热，以及纳入光蒸发和类似CKS的选择函数的前向建模模拟。我们发现，即使考虑到年龄和其他基本参数之间的完整性或相关性的影响，我们发现观察到的趋势仍然存在。
There is growing evidence that the population of close-in planets discovered by the Kepler mission was sculpted by atmospheric loss, though the typical timescale for this evolution is not well-constrained. Among a highly complete sample of planet hosts of varying ages the age-dependence of the relative fraction of super-Earth and sub-Neptune detections can be used to constrain the rate at which some small planets lose their atmospheres. Using the California-Kepler Survey (CKS) sample, we find evidence that the ratio of super-Earth to sub-Neptune detections rises monotonically from 1-10 Gyr. Our results are in good agreement with an independent study focused on stars hotter than the Sun, as well as with forward modeling simulations incorporating the effects of photoevaporation and a CKS-like selection function. We find the observed trend persists even after accounting for the effects of completeness or correlations between age and other fundamental parameters.
