NGTS-1b：一颗凌食 M 型矮星的热木星
地球与行星天体物理
2018-03-14 v1
摘要
我们报告 NGTS-1b 的发现，这是一颗凌食早期 M 型矮星宿主（）的热木星，其轨道周期 P=2.674d，由下一代凌星巡天（NGTS）发现。该行星质量为 ，是迄今发现的凌食 M 型矮星的最质量行星。行星半径为 。由于凌食为掠射式，我们通过建模数据并依据已知气态巨行星族群的密度先验来确定该半径。NGTS-1b 是围绕 M 型矮星发现的第三颗凌食巨行星，强化了近距气态巨行星能够像围绕太阳型恒星的已知热木星族群一样形成和迁移的观点。宿主恒星无活动迹象，且运动学暗示该星来自厚盘族群。凭借围绕 宿主的深度（2.5%）凌食，NGTS-1b 将通过 JWST 透射光谱探测 M 型矮星周围巨行星成分的强候选体。
引用
@article{arxiv.1710.11099,
title = {NGTS-1b: A hot Jupiter transiting an M-dwarf},
author = {Daniel Bayliss and Edward Gillen and Philipp Eigmuller and James McCormac and Richard D. Alexander and David J. Armstrong and Rachel S. Booth and Francois Bouchy and Matthew R. Burleigh and Juan Cabrera and Sarah L. Casewell and Alexander Chaushev and Bruno Chazelas and Szilard Csizmadia and Anders Erikson and Francesca Faedi and Emma Foxell and Boris T. Gansicke and Michael R. Goad and Andrew Grange and Maximilian N. Gunther and Simon T. Hodgkin and James Jackman and James S. Jenkins and Gregory Lambert and Tom Louden and Lionel Metrailler and Maximiliano Moyano and Don Pollacco and Katja Poppenhaeger and Didier Queloz and Roberto Raddi and Heike Rauer and Liam Raynard and Alexis M. S. Smith and Maritza Soto and Andrew P. G. Thompson and Ruth Titz-Weider and Stephane Udry and Simon. R. Walker and Christopher A. Watson and Richard G. West and Peter J. Wheatley},
journal= {arXiv preprint arXiv:1710.11099},
year = {2018}
}
备注
10 pages, 7 figures, accepted for publication in MNRAS