凌星环双星行星 Kepler-34 与 Kepler-35
地球与行星天体物理
2012-04-19 v1 太阳与恒星天体物理
摘要
银河系中大多数类太阳恒星居住在被称为“双星”的引力束缚对中。虽然人们早已预期存在环绕这样一对正常恒星的“环双星行星”，但直到 Kepler-16 的发现才得以确切证实。行星对恒星的微型食（“凌星”）提供了无可辩驳的证据。然而，关于环双星行星的普遍性及其轨道和物理性质的范围仍存疑问。在此，我们展示另外两颗凌星环双星行星：Kepler-34 和 Kepler-35。它们均为低密度气态巨行星，其轨道与母恒星的轨道高度共面。Kepler-34 每 289 天环绕两颗类太阳恒星运行一周，而 Kepler-35 每 131 天环绕一对较小恒星（质量分别为太阳的 89% 和 81%）运行一周。由于恒星的轨道运动，这些行星经历的入射恒星辐射存在大幅度的多周期变化。观测到的环双星行星发生率意味着超过约 1% 的密近双星拥有近乎共面轨道的巨行星，由此推算银河系内此类种群数量至少为数百万。
引用
@article{arxiv.1204.3955,
title = {The Transiting Circumbinary Planets Kepler-34 and Kepler-35},
author = {William F. Welsh and Jerome A. Orosz and Joshua A. Carter and Daniel C. Fabrycky and Eric B. Ford and Jack J. Lissauer and Andrej Prsa and Samuel N. Quinn and Darin Ragozzine and Donald R. Short and Guillermo Torres and Joshua N. Winn and Laurance R. Doyle and Thomas Barclay and Natalie Batalha and Steven Bloemen and Erik Brugamyer and Lars A. Buchhave and Caroline Caldwell and Douglas A. Caldwell and Jessie L. Christiansen and David R. Ciardi and William D. Cochran and Michael Endl and Jonathan J. Fortney and Thomas N. Gautier and Ronald L. Gilliland and Michael R. Haas and Jennifer R. Hall and Matthew J. Holman and Andrew W. Howard and Steve B. Howell and Howard Isaacson and Jon M. Jenkins and Todd C. Klaus and David W. Latham and Jie Li and Geoffrey W. Marcy and Tsevi Mazeh and Elisa V. Quintana and Paul Robertson and Avi Shporer and Jason H. Steffen and Gur Windmiller and David G. Koch and William J. Borucki},
journal= {arXiv preprint arXiv:1204.3955},
year = {2012}
}
备注
Accepted and published in Nature (2012 Jan 26). This is the submitted version of paper, merged with the Supplementary Information; 56 pages total with 20 figures