Multi-planet systems produce a wealth of information for exoplanet science, but our understanding of planetary architectures is incomplete. Probing these systems further will provide insight into orbital architectures and formation pathways. Here we present a model to predict previously undetected planets in these systems via population statistics. The model considers both transiting and non-transiting planets, and can test the addition of more than one planet. Our tests show the model's orbital period predictions are robust to perturbations in system architectures on the order of a few percent, much larger than current uncertainties. Applying it to the multi-planet systems from TESS provides a prioritized list of targets, based on predicted transit depth and probability, for archival searches and for guiding ground-based follow-up observations hunting for hidden planets.
Hidden Gems in TESS: sherlock finds two new rocky planets around nearby M dwarfs
University of Birmingham(伯明翰大学);Université de Liège(列日大学);Universidad de Granada(格拉纳达大学);Avature;Instituto de Astrofísica de Andalucía (IAA-CSIC)(安达卢西亚天体物理研究所);Instituto de Astrofisica de Canarias (IAC)(加那利天体物理研究所);Massachusetts Institute of Technology(麻省理工学院);Universidad de Tarapacá(塔拉帕卡大学);Observatoire de Genève, Département d’Astronomie, Université de Genève(日内瓦大学天文学系天文台);Univ. Grenoble Alpes, CNRS, IPAG(格勒诺布尔阿尔卑斯大学);NASA Ames Research Center(美国国家航空航天局艾姆斯研究中心)
Hidden worlds: A non-transiting candidate planet in the Neptunian desert around the solar-type pulsator KIC 9139163
INAF – Osservatorio Astrofisico di Catania(意大利国家天体物理研究所卡塔尼亚天文台);Space Telescope Science Institute(太空望远镜科学研究所);Instituto de Astrofísica de Canarias (IAC)(加那利群岛天体物理研究所);Departamento de Astrofísica, Universidad de la Laguna(拉帕尔马大学天体物理学系);Space Research Institute, Austrian Academy of Sciences(奥地利科学院空间研究所);Université Paris-Saclay, Université Paris Cité, CEA, CNRS, AIM(巴黎萨克雷大学、巴黎西岱大学、法国原子能和替代能源委员会、法国国家科学研究中心、天体分子基础研究实验室)
A temperate sub-Neptune transiting the M4 Dwarf TOI-210 identified by NIRPS and TESS -- Uncovering hidden M-dwarf planetary systems in the near-infrared
Observatoire de Genève, Département d’Astronomie, Université de Genève(日内瓦天文台,天文学系,日内瓦大学);Institut Trottier de recherche sur les exoplanètes, Département de Physique, Université de Montréal(特罗蒂埃系外行星研究所,物理系,蒙特利尔大学);Department of Physics & Astronomy, McMaster University(麦克马斯特大学物理与天文学系);Origins Institute, McMaster University(麦克马斯特大学起源研究所);Observatoire du Mont-Mégantic(蒙梅甘蒂克天文台);Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte(北里奥格兰德联邦大学理论与实验物理学系);Univ. Grenoble Alpes, CNRS, IPAG(格勒诺布尔阿尔卑斯大学,法国国家科学研究中心,IPAG)
Search for planets in hot Jupiter systems with multi-sector TESS photometry. I. No companions in planetary systems KELT-18, KELT-23, KELT-24, Qatar-8, WASP-62, WASP-100, WASP-119, and WASP-126
K-Stacker, an algorithm to hack the orbital parameters of planets hidden in high-contrast imaging. First applications to VLT SPHERE multi-epoch observations
Discovery and Characterization of the TOI-4468 Planetary System: A Transiting Hot Jupiter With a Lone Nearby Outer Companion
University of Wisconsin–Madison(威斯康星大学麦迪逊分校);NASA Goddard Space Flight Center(NASA戈达德太空飞行中心);Center for Astrophysics | Harvard & Smithsonian(哈佛与史密森尼天体物理中心);Michigan State University(密歇根州立大学);Anton Pannekoek Institute for Astronomy, University of Amsterdam(阿姆斯特丹大学安东·潘内科克天文学研究所);ASTRON, Netherlands Institute for Radio Astronomy(荷兰射电天文研究所ASTRON);Centre for Astrophysics, University of Southern Queensland(南昆士兰大学天体物理学中心);Astrophysics & Space Institute, Schmid(施密德天体物理学与空间研究所)
A 34.6-day transiting sub-Neptune in the TOI-1422 planetary system
INAF – Osservatorio Astrofisico di Torino(意大利国家天体物理研究所都灵天文台);Dipartimento di Fisica, Università di Trento(特伦托大学物理系);Dipartimento di Fisica e Astronomia, Università degli Studi di Padova(帕多瓦大学物理与天文学系);Institute for Particle Physics and Astrophysics, ETH Zürich(苏黎世联邦理工学院粒子物理与天体物理研究所);Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège(列日大学空间科学、技术与天体物理研究(STAR)研究所);Astrobiology Research Unit, Université de Liège(列日大学天体生物学研究组);Department of Physics, University of Rome “Tor Vergata”(罗马托尔维加塔大学物理系);Max Planck Institute for Astronomy(马克斯·普朗克天文学研究所);INAF – Osservatorio Astronomico di Palermo(意大利国家天体物理研究所巴勒莫天文台);Fundación Galileo Galilei - INAF(伽利略基金会-意大利国家天体物理研究所)
TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf
我们使用TESS Sector 11和Sector 38的数据发现了两颗经过TOI-836(TIC 440887364)的系外行星。TOI-836是一颗明亮的K矮星($T = 8.5$等),高自行($\sim\,200$ mas yr $^{-1}$),低金属量([Fe/H] $\approx\,-0.28$),质量为$0.68\pm0.05$ M $_{\odot}$,半径为$0.67\pm0.01$ R $_{\odot}$。我们获得光度跟踪观测与各种设施,我们使用这些数据集,以确定内行星,TOI-836 b,是一个$1.70\pm0.07$ R $_{\oplus}$超级地球在3.82天的轨道,把它直接在所谓的“半径谷”。外行星TOI-836 c是一颗$2.59\pm0.09$ R $_{\oplus}$迷你海王星,公转周期为8.60天。径向速度测量显示TOI-836 b的质量为$4.5\pm0.9$ M $_{\oplus}$,而TOI-836 c的质量为$9.6\pm2.6$ M $_{\oplus}$。测光观测显示,TOI-836 c的凌日时间变化(TTV)约为20分钟,但TOI-836 b没有可检测到的TTV。行星TOI-836 c的TTV可能是由一颗未被发现的外部行星造成的。