KELT-3b：一颗凌越 V=9.8 晚型 F 星的热木星
地球与行星天体物理
2015-06-12 v2
摘要
我们报告了 KELT-3b 的发现，这是一颗适度膨胀的凌越热木星，其质量为 1.477 (-0.067, +0.066) M_J，半径为 1.345 +/- 0.072 R_J，轨道周期为 2.7033904 +/- 0.000010 天。宿主恒星 KELT-3 是一颗 V=9.8 的晚型 F 星，其参数为 M_* = 1.278 (-0.061, +0.063) M_sun，R_* = 1.472 (-0.067, +0.065) R_sun，T_eff = 6306 (-49, +50) K，log(g) = 4.209 (-0.031, +0.033)，[Fe/H] = 0.044 (-0.082, +0.080)，并可能拥有一颗自行伴星。KELT-3b 是 KELT 巡天发现的第三颗凌越系外行星，其绕转的恒星是已知最亮的 20 颗凌越行星宿主恒星之一，使其成为详细表征研究的理想候选体。尽管我们推断 KELT-3 已显著演化，但对该系统恒星及轨道演化的初步分析表明，该行星接收的入射通量水平可能始终高于 Demory & Seager (2011) 经验确定的半径膨胀阈值。
引用
@article{arxiv.1211.1031,
title = {KELT-3b: A Hot Jupiter Transiting a V=9.8 Late-F Star},
author = {Joshua Pepper and Robert J. Siverd and Thomas G. Beatty and B. Scott Gaudi and Keivan G. Stassun and Jason Eastman and Karen Collins and David W. Latham and Allyson Bieryla and Lars A. Buchhave and Eric L. N. Jensen and Mark Manner and Kaloyan Penev and Justin R. Crepp and Phillip A. Cargile and Saurav Dhital and Michael L. Calkins and Gilbert A. Esquerdo and Perry Berlind and Benjamin J. Fulton and Rachel Street and Bo Ma and Jian Ge and Ji Wang and Qingqing Mao and Alexander J. W. Richert and Andrew Gould and Darren L. DePoy and John F. Kielkopf and Jennifer L. Marshall and Richard W. Pogge and Robert P. Stefanik and Mark Trueblood and Patricia Trueblood},
journal= {arXiv preprint arXiv:1211.1031},
year = {2015}
}
备注
12 pages, 12 figures, accepted to ApJ