Kepler-7b：一颗密度异常低的凌星行星
地球与行星天体物理
2012-12-14 v1
摘要
我们报告了Kepler-7b的发现和确认，这是一颗密度异常低的凌星行星。其质量不到木星的一半，Mp = 0.43 Mj，但半径却比木星大50%，Rp = 1.48 Rj。由此得到的密度为0.17 g/cc，是迄今报道的太阳系外行星中第二低的。轨道周期相当长，P = 4.886天，主星并不比太阳热多少，Teff = 6000 K。然而，它比太阳质量更大、体积也大得多，Mstar = 1.35 Msun，Rstar = 1.84 Rsun，并且必定接近其主序星寿命的终点。
引用
@article{arxiv.1001.0190,
title = {Kepler-7b: A Transiting Planet with Unusually Low Density},
author = {David W. Latham and William J. Borucki and David G. Koch and Timothy M. Brown and Lars A. Buchhave and Gibor Basri and Natalie M. Batalha and Douglas A. Caldwell and William D. Cochran and Edward W. Dunham and Gabor Furesz and Thomas N. Gautier and John C. Geary and Ronald L. Gilliland and Steve B. Howell and Jon M. Jenkins and Jack J. Lissauer and Geoffrey W. Marcy and David G. Monet and Jason F. Rowe and Dimitar D. Sasselov},
journal= {arXiv preprint arXiv:1001.0190},
year = {2012}
}
备注
19 pages, 3 figures