ExoClock 项目 II：基于 180 个更新系外行星星历的大规模集成研究
地球与行星天体物理
2022-02-16 v1
摘要
ExoClock 项目是一个包容、集成且交互的平台，旨在监测 Ariel 目标的星历以提高任务效率。该项目充分利用所有可用资源，即来自地面望远镜的观测、文献中的中天时刻值，以及空间仪器的观测。目前，ExoClock 网络包含 280 名参与者，其望远镜能够观测当前已知 Ariel 候选目标的 85\%。本工作包含截至 2020 年 12 月 31 日从 ExoClock 网络获得的 1600 次观测的结果。这些数据与从文献收集的 2350 个中天时刻值结合，用于更新 180 颗行星的星历。分析表明，40\% 的更新星历将对未来排程产生影响，因为它们要么精度显著提升，要么揭示了旧星历中的偏差。借助新观测，样本中半数行星的观测覆盖度与频率已翻倍或更多。最后，从总体角度看，我们识别出旧星历与新星历在 2028 年预测上的差异之 STD 是高斯不确定性所预期值的两倍。这些发现对未来观测规划具有启示意义，我们需考虑可能大于预测不确定性的漂移。更新后的星历向更广泛的系外行星学界开放，可从我们的开放科学框架（OSF）仓库及网站获取。
引用
@article{arxiv.2110.13863,
title = {ExoClock project II: A large-scale integrated study with 180 updated exoplanet ephemerides},
author = {A. Kokori and A. Tsiaras and B. Edwards and M. Rocchetto and G. Tinetti and L. Bewersdorff and Y. Jongen and G. Lekkas and G. Pantelidou and E. Poultourtzidis and A. Wünsche and C. Aggelis and V. K. Agnihotri and C. Arena and M. Bachschmidt and D. Bennett and P. Benni and K. Bernacki and E. Besson and L. Betti and A. Biagini and P. Brandebourg and M. Bretton and S. M. Brincat and M. Caló and F. Campos and R. Casali and R. Ciantini and M. V. Crow and B. Dauchet and S. Dawes and M. Deldem and D. Deligeorgopoulos and R. Dymock and T. Eenmäe and P. Evans and N. Esseiva and C. Falco and S. Ferratfiat and M. Fowler and S. R. Futcher and J. Gaitan and F. Grau Horta and P. Guerra and F. Hurter and A. Jones and W. Kang and H. Kiiskinen and T. Kim and D. Laloum and R. Lee and F. Lomoz and C. Lopresti and M. Mallonn and M. Mannucci and A. Marino and J. -C. Mario and J. -B. Marquette and J. Michelet and M. Miller and T. Mollier and D. Molina and N. Montigiani and F. Mortari and M. Morvan and L. V. Mugnai and L. Naponiello and A. Nastasi and R. Neito and E. Pace and P. Papadeas and N. Paschalis and C. Pereira and V. Perroud and M. Phillips and P. Pintr and J. -B. Pioppa and A. Popowicz and M. Raetz and F. Regembal and K. Rickard and M. Roberts and L. Rousselot and X. Rubia and J. Savage and D. Sedita and D. Shave-Wall and N. Sioulas and V. Školník and M. Smith and D. St-Gelais and D. Stouraitis and I. Strikis and G. Thurston and A. Tomacelli and A. Tomatis and B. Trevan and P. Valeau and J. -P. Vignes and K. Vora and M. Vrašťák and F. Walter and B. Wenzel and D. E. Wright and M. Zíbar},
journal= {arXiv preprint arXiv:2110.13863},
year = {2022}
}
备注
9 pages (47 with appendices and references), 8 figures, 2 tables. Submitted to ApJS. Revised based on the reviewer's comments