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
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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
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发表时间:
2010
影响因子:
4.8
通讯作者:
Gibson N
中科院分区:
文献类型:
--
作者:
Gibson N
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.
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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
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
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
影响因子:
6.5
作者:
Gibson N
通讯作者:
Gibson N