SIMBAD references

2010MNRAS.401.1917G - Mon. Not. R. Astron. Soc., 401, 1917-1923 (2010/January-3)

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

GIBSON N.P., POLLACCO D.L., BARROS S., BENN C., CHRISTIAN D., HRUDKOVA M., JOSHI Y.C., KEENAN F.P., SIMPSON E.K., SKILLEN I., STEELE I.A. and TODD I.

Abstract (from CDS):

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 be i = 86.75+0.22–0.21°, the planet-star radius ratio to be Rp/R*= 0.1098+0.0010–0.0012 and the stellar radius to be R*= 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 as Tc(0) = 2454856.70118 ±0.00018 HJD and P = 2.899738±0.000007 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 1.81 M in the interior and exterior 2:1 resonances, respectively, assuming the planets are initially in circular orbits.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): methods: data analysis - techniques: photometric - stars: individual: HAT-P-3 - planetary systems

Simbad objects: 4

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2023.01.27-18:54:30

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