论文标题
部分可观测时空混沌系统的无模型预测
TFAW survey II: 6 Newly Validated Planets and 13 Planet Candidates from K2
论文作者
论文摘要
从开普勒的扩展任务（K2）中搜索数据中的地球大小的行星是一个仍然有待充分利用的利基市场。 TFAW调查是一个正在进行的项目，旨在通过基于小波的逐发和去核方法重新分析K2 C1-C8和C12-C18广告系列中的所有光线曲线，以及时期的搜索算法TLS，以搜索以前工作中未检测到的新运输候选者。我们已经分析了24个候选行星系统的第一个子集围绕相对微弱的宿主星（10.9 <$ k_ {p} $ <15.4），以允许进行后续斑点成像观测值。使用Vespa和Triceratops，我们通过统计，通过获得两种方法的假阳性概率小于1％的假阳性概率，从统计上验证了六个候选者。我们还提出了13个审查的行星候选者，这些行星可能受益于其他更精确的后续观察。所有这些行星都是亚北极大小的，有两个经过验证的行星和三个具有亚地球尺寸的候选者，并且轨道周期为0.81至23.98天。一些有趣的系统包括两个超短期的行星，三个多星际系统，三个似乎位于小星球半径差距内的子纳普，还有两个经过验证的和一个候选子 - 地球（Epic 210706310，Epic 210768568），以及EPIC 246078343），ePIC 246078343）。
Searching for Earth-sized planets in data from Kepler's extended mission (K2) is a niche that still remains to be fully exploited. The TFAW survey is an ongoing project that aims to re-analyze all light curves in K2 C1-C8 and C12-C18 campaigns with a wavelet-based detrending and denoising method, and the period search algorithm TLS to search for new transit candidates not detected in previous works. We have analyzed a first subset of 24 candidate planetary systems around relatively faint host stars (10.9 < $K_{p}$ < 15.4) to allow for follow-up speckle imaging observations. Using VESPA and TRICERATOPS, we statistically validate six candidates orbiting four unique host stars by obtaining false-positive probabilities smaller than 1% with both methods. We also present 13 vetted planet candidates that might benefit from other, more precise follow-up observations. All of these planets are sub-Neptune-sized, with two validated planets and three candidates with sub-Earth sizes, and have orbital periods between 0.81 and 23.98 days. Some interesting systems include two ultra-short-period planets, three multi-planetary systems, three sub-Neptunes that appear to be within the small planet Radius Gap, and two validated and one candidate sub-Earths (EPIC 210706310, EPIC 210768568, and EPIC 246078343) orbiting metal-poor stars.
