ExoClock 项目 III：基于地基与空间观测的 450 个新系外行星星历
地球与行星天体物理
2023-02-22 v1 天体物理仪器与方法
太阳与恒星天体物理
摘要
ExoClock 项目旨在提升 Ariel 任务的效率。它通过在一个较长时期内持续监测并更新 Ariel 候选体的星历，以生成一份一致、可靠且精确的星历目录。本工作呈现了一份包含 450 颗行星更新星历的同质目录，由来自多源的约 18000 个数据点整合生成。这些来源包括地基望远镜（ExoClock 网络与 ETD）的观测、文献中的中时刻值，以及空间望远镜（Kepler/K2 与 TESS）的光变曲线。借助上述所有数据，我们得以收集到（中位数）发现后年份中一半时间的观测，且数据的中位数不确定度小于一分钟。与文献相比，该项目生成的星历更精确且偏差更小。超过 40% 的初始文献星历因精度过低或发生漂移而必须更新，方能达成项目目标。此外，项目的整合方法既能监测绝大多数 Ariel 候选体（95%），也可识别缺失数据。专用的 ExoClock 网络通过在发现数据缺口时补充观测，有效支撑了此任务。这些结果凸显了持续监测以提升候选行星观测覆盖率的必要性。最后，行星扩展的观测覆盖使我们能在一组 19 颗行星中探测到趋势（TTV——凌星时刻变化）。本工作所用的所有产物、数据与代码均开放并可供广大科学界获取。
引用
@article{arxiv.2209.09673,
title = {ExoClock Project III: 450 new exoplanet ephemerides from ground and space observations},
author = {A. Kokori and A. Tsiaras and B. Edwards and A. Jones and G. Pantelidou and G. Tinetti and L. Bewersdorff and A. Iliadou and Y. Jongen and G. Lekkas and A. Nastasi and E. Poultourtzidis and C. Sidiropoulos and F. Walter and A. Wünsche and R. Abraham and V. K. Agnihotri and R. Albanesi and E. Arce-Mansego and D. Arnot and M. Audejean and C. Aumasson and M. Bachschmidt and G. Baj and P. R. Barroy and A. A. Belinski and D. Bennett and P. Benni and K. Bernacki and L. Betti and A. Biagini and P. Bosch and P. Brandebourg and L. Brát and M. Bretton and S. M. Brincat and S. Brouillard and A. Bruzas and A. Bruzzone and R. A. Buckland and M. Caló and F. Campos and A. Carreno and J. -A. Carrion Rodrigo and R. Casali and G. Casalnuovo and M. Cataneo and C. -M. Chang and L. Changeat and V. Chowdhury and R. Ciantini and M. Cilluffo and J. -F. Coliac and G. Conzo and M. Correa and G. Coulon and N. Crouzet and M. V. Crow and I. Curtis and D. Daniel and S. Dawes and B. Dauchet and M. Deldem and D. Deligeorgopoulos and G. Dransfield and R. Dymock and T. Eenmäe and P. Evans and N. Esseiva and C. Falco and R. G. Farfán and E. Fernández-Lajús and S. Ferratfiat and S. L. Ferreira and A. Ferretti and J. Fiołka and M. Fowler and S. R. Futcher and D. Gabellini and T. Gainey and J. Gaitan and P. Gajdoš and A. García-Sánchez and J. Garlitz and C. Gillier and C. Gison and F. Grau Horta and G. Grivas and J. Gonzales and D. Gorshanov and P. Guerra and T. Guillot and C. A. Haswell and T. Haymes and V. -P. Hentunen and K. Hills and K. Hose and T. Humbert and F. Hurter and T. Hynek and M. Irzyk and J. Jacobsen and A. L. Jannetta and K. Johnson and P. Jóźwik-Wabik and A. E. Kaeouach and W. Kang and H. Kiiskinen and T. Kim and Ü. Kivila and B. Koch and U. Kolb and H. Kučáková and S. -P. Lai and D. Laloum and S. Lasota and L. A. Lewis and G. -I. Liakos and F. Libotte and C. Lopresti and F. Lomoz and R. Majewski and A. Malcher and M. Mallonn and M. Mannucci and A. Marchini and J. -M. Mari and A. Marino and G. Marino and J. -C. Mario and J. -B. Marquette and F. A. Martínez-Bravo and M. Mašek and P. Matassa and P. Michel and J. Michelet and M. Miller and E. Miny and T. Mollier and D. Molina and B. Monteleone and N. Montigiani and M. Morales-Aimar and F. Mortari and M. Morvan and L. V. Mugnai and G. Murawski and L. Naponiello and R. Naves and J. -L. Naudin and D. Néel and R. Neito and S. Neveu and A. Noschese and Y. Öğmen and O. Ohshima and Z. Orbanic and E. P. Pace and C. Pantacchini and N. I. Paschalis and C. Pereira and I. Peretto and V. Perroud and M. Phillips and P. Pintr and J. -B. Pioppa and J. Plazas and A. J. Poelarends and A. Popowicz and J. Purcell and N. Quinn and M. Raetz and D. Rees and F. Regembal and M. Rocchetto and P. -F. Rocci and M. Rockenbauer and R. Roth and L. Rousselot and X. Rubia and N. Ruocco and E. Russo and M. Salisbury and F. Salvaggio and A. Santos and J. Savage and F. Scaggiante and D. Sedita and S. Shadick and A. F. Silva and N. Sioulas and V. Školník and M. Smith and M. Smolka and A. Solmaz and N. Stanbury and D. Stouraitis and T. -G. Tan and M. Theusner and G. Thurston and F. -P. Tifner and A. Tomacelli and A. Tomatis and J. Trnka and M. Tylšar and P. Valeau and J. -P. Vignes and A. Villa and A. Vives Sureda and K. Vora and M. Vrašťák and D. Walliang and B. Wenzel and D. E. Wright and R. Zambelli and M. Zhang and M. Zíbar},
journal= {arXiv preprint arXiv:2209.09673},
year = {2023}
}
备注
Recommended for publication to ApJS (reviewer's comments implemented). Main body: 13 pages, total: 77 pages, 7 figures, 7 tables. Data available at http://doi.org/10.17605/OSF.IO/P298N