A transit timing analysis of seven RISE light curves of the exoplanet system HAT-P-3

A transit timing analysis of seven RISE light curves of the exoplanet system HAT-P-3
复制标题

系外行星系统 HAT-P-3 七个 RISE 光变曲线的凌日时间分析

DOI:
10.1111/j.1365-2966.2009.15770.x
复制
发表时间:
2010
影响因子:
4.8
通讯作者:
Gibson N
Gibson N
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Gibson N

文献摘要

参考文献

被引文献

相似文献

我们提出了七个光变曲线的系外行星系统HAT-P-3,作为过境计时计划的一部分,使用快速成像仪搜索系外行星仪器上的利物浦望远镜。使用马尔可夫链蒙特卡罗算法来更新系统的参数的光变曲线进行分析。倾角为bei= 86.75+0.22−0.21°,行星与恒星的半径比为beR/R★= 0.1098+0.0010− 0.0012,恒星半径为beR★= 0.834+0.018− 0.026 R <$,与先前的结果一致,但在精度上有显著的改进。中心渡越时间和每个光变曲线的不确定性也被确定,并且残差置换算法被用作对误差的独立检查。发现渡越时间与线性星历一致,并计算出新的星历Tc(0)= 2454856.70118 ± 0.00018HJD和P = 2.899738 ± 0.000007d。模型的定时残差拟合到测量的定时残差放置一个假设的扰动行星作为周期比的函数的质量上限。这些结果表明,我们已经探测到了质量分别为0.33和1.81 M/s的行星,内部和外部2:1共振,假设行星最初在圆形轨道上。
We present seven light curves of the exoplanet system HAT-P-3, taken as part of a transit timing programme using the rapid imager to search for exoplanets instrument on the Liverpool Telescope. The light curves are analysed using a Markov chain Monte Carlo algorithm to update the parameters of the system. The inclination is found to bei= 86.75+0.22−0.21°, the planet-star radius ratio to beRp/R★= 0.1098+0.0010−0.0012and the stellar radius to beR★= 0.834+0.018−0.026R⊙, consistent with previous results but with a significant improvement in the precision. Central transit times and uncertainties for each light curve are also determined, and a residual permutation algorithm is used as an independent check on the errors. The transit times are found to be consistent with a linear ephemeris, and a new ephemeris is calculated asTc(0) = 245 4856.701 18 ± 0.000 18 HJD andP= 2.899 738 ± 0.000 007 d. Model timing residuals are fitted to the measured timing residuals to place upper mass limits for a hypothetical perturbing planet as a function of the period ratio. These show that we have probed for planets with masses as low as 0.33 and 1.81M⊕in the interior and exterior 2:1 resonances, respectively, assuming the planets are initially in circular orbits.
RISE:用于系外行星凌日计时的快速读出成像仪
DOI: 10.1117/12.787889
发表时间: 2008
影响因子: 3.5
作者:
I. Steele;S. Bates;N. Gibson;F. Keenan;J. Meaburn;C. Mottram;D. Pollacco;I. Todd
通讯作者: I. Todd
25 个凌日系外行星系统中特洛伊伴星和轨道偏心率的经验约束
DOI: 10.1088/0004-637x/693/1/784
发表时间: 2008
期刊: The Astrophysical Journal
影响因子: --
作者:
N. Madhusudhan;J. Winn
通讯作者: J. Winn
DOI: 10.1086/508155
发表时间: 2006-07
期刊: The Astrophysical Journal
影响因子: --
作者:
M. Holman;J. Winn;D. Latham;F. O'Donovan;D. Charbonneau;G. Bakos;G. Esquerdo;C. Hergenrother;M. Everett;A. Pál
通讯作者: M. Holman;J. Winn;D. Latham;F. O'Donovan;D. Charbonneau;G. Bakos;G. Esquerdo;C. Hergenrother;M. Everett;A. Pál
匈牙利自动望远镜(用于变差搜索的自主天文台)的系统描述和第一张光曲线
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
G. Bakos;J. Lázár;I. Papp;P. Sári;E. Green
通讯作者: E. Green
使用利物浦望远镜的新型快速相机 RISE 更新了凌日系外行星 WASP-3b 的参数
DOI: 10.1051/0004-6361:200811015
发表时间: 2008
影响因子: 6.5
作者:
Gibson N
通讯作者: Gibson N