论文标题
南部柏拉图领域天体物理假阳性检测的人口研究
Population Study of Astrophysical False Positive Detections in the Southern PLATO field
论文作者
论文摘要
对于即将到来的行星横传和恒星（柏拉图）卫星任务的振荡，需要大量目标恒星才能产生统计学上大量的行星转移。在靠近银河平面的较长持续时间观测阶段（LOP）场的中心将增加目标恒星数量，但也会增加来自混合黯然失色的二进制系统的天体物理误报（FPS）。我们利用二元恒星进化和种群合成（BISEPS）代码，为拟议的Southern Lop Field（LOPS0）以及Northern Lop Field（LOPNSUB）的代表性部分创建完整的合成恒星和行星人群。对于LOPS0，我们发现小于Neptunes的行星的总体低FP速率。 FP速率通常显示出与银河经度（L）的变化很小，并且随着银河系纬度的降低（| B |）的较小增加。 LOPS场中心在允许区域内的位置不受FPS的强烈约束。对LOPNSUB的分析表明，在低| B |的整个行星半径上的FPS数量明显增加。与行星半径范围-0.2 <log（r/rsun）<= 0.4相比，LOPNSUB中FP速率的百分比速率约为fp率的百分比百分比的两倍。但是，在此半径范围内，只有几个完全黯然失色的fps fps有周期
For the upcoming PLAnetary Transits and Oscillation of stars (PLATO) satellite mission, a large number of target stars are required to yield a statistically significant number of planet transits. Locating the centres of the long duration observational phase (LOP) fields closer to the Galactic plane will increase the target star numbers but also the astrophysical false positives (FPs) from blended eclipsing binary systems. We utilise the Binary Stellar Evolution and Population Synthesis (BiSEPS) code, to create a complete synthetic stellar and planetary population for the proposed southern LOP field (LOPS0), as well as for a representative portion of the northern LOP field (LOPNsub). For LOPS0 we find an overall low FP rate for planets smaller than Neptunes. The FP rate generally shows little variation with Galactic longitude (l), and a modest increase with decreasing Galactic latitude (|b|). The location of the LOPS field centre within the current allowed region is not strongly constrained by FPs. Analysis of LOPNsub suggests a markedly increased number of FPs across the full range of planet radii at low |b| resulting in approximately twice the percent FP rate in the LOPNsub compared to the corresponding southern field segment in the planet radius range -0.2 < log(R/Rsun) <= 0.4. However, only a few percent of fully eclipsing FPs in LOPS0 in this radius range have periods
