前主序恒星 AU Microscopii 碎屑盘中的一颗行星
地球与行星天体物理
2020-06-29 v2 太阳与恒星天体物理
摘要
AU Microscopii (AU Mic) 是第二近的前主序恒星，距离 9.79 秒差距，年龄 2200 万年。AU Mic 拥有一个相对罕见且空间已分辨的3边缘-on 碎屑盘，从距恒星约 35 到 210 天文单位延伸，并具有展现非开普勒运动的团块。在此类恒星周围探测新形成行星受到恒星上黑子、谱斑、耀斑及其他磁活动表现的挑战。此处我们报告一颗凌 AU Mic 的行星的观测。该凌星行星 AU Mic b 轨道周期 8.46 天，轨道距离 0.07 天文单位，半径 0.4 木星半径，质量在 3 sigma 置信度下小于 0.18 木星质量。我们对共存于碎屑盘中行星的观测提供了检验当前行星形成与演化模型预测的机会。
引用
@article{arxiv.2006.13248,
title = {A planet within the debris disk around the pre-main-sequence star AU Microscopii},
author = {Peter Plavchan and Thomas Barclay and Jonathan Gagné and Peter Gao and Bryson Cale and William Matzko and Diana Dragomir and Sam Quinn and Dax Feliz and Keivan Stassun and Ian J. M. Crossfield and David A. Berardo and David W. Latham and Ben Tieu and Guillem Anglada-Escudé and George Ricker and Roland Vanderspek and Sara Seager and Joshua N. Winn and Jon M. Jenkins and Stephen Rinehart and Akshata Krishnamurthy and Scott Dynes and John Doty and Fred Adams and Dennis A. Afanasev and Chas Beichman and Mike Bottom and Brendan P. Bowler and Carolyn Brinkworth and Carolyn J. Brown and Andrew Cancino and David R. Ciardi and Mark Clampin and Jake T. Clark and Karen Collins and Cassy Davison and Daniel Foreman-Mackey and Elise Furlan and Eric J. Gaidos and Claire Geneser and Frank Giddens and Emily Gilbert and Ryan Hall and Coel Hellier and Todd Henry and Jonathan Horner and Andrew W. Howard and Chelsea Huang and Joseph Huber and Stephen R. Kane and Matthew Kenworthy and John Kielkopf and David Kipping and Chris Klenke and Ethan Kruse and Natasha Latouf and Patrick Lowrance and Bertrand Mennesson and Matthew Mengel and Sean M. Mills and Tim Morton and Norio Narita and Elisabeth Newton and America Nishimoto and Jack Okumura and Enric Palle and Joshua Pepper and Elisa V. Quintana and Aki Roberge and Veronica Roccatagliata and Joshua E. Schlieder and Angelle Tanner and Johanna Teske and C. G. Tinney and Andrew Vanderburg and Kaspar von Braun and Bernie Walp and Jason Wang and Sharon Xuesong Wang and Denise Weigand and Russel White and Robert A. Wittenmyer and Duncan J. Wright and Allison Youngblood and Hui Zhang and Perri Zilberman},
journal= {arXiv preprint arXiv:2006.13248},
year = {2020}
}
备注
Nature, published June 24th [author spelling name fix]