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Searching for transit timing variations in transiting exoplanet systems

Published online by Cambridge University Press:  01 May 2008

Marie Hrudková ,
Ian Skillen ,
Chris Benn ,
Don Pollacco ,
Neale Gibson ,
Yogesh Joshi ,
Petr Harmanec  and
Simon Tulloch
Marie Hrudková
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, 18000, Praha 8, Czech Republic email: mariehrudkova@gmail.com
Ian Skillen
Affiliation:
Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700, Santa Cruz de la Palma, Canary Islands, Spain
Chris Benn
Affiliation:
Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700, Santa Cruz de la Palma, Canary Islands, Spain
Don Pollacco
Affiliation:
Queen's University Belfast, University Road, BT7 1NN, Belfast, UK
Neale Gibson
Affiliation:
Queen's University Belfast, University Road, BT7 1NN, Belfast, UK
Yogesh Joshi
Affiliation:
Queen's University Belfast, University Road, BT7 1NN, Belfast, UK
Petr Harmanec
Affiliation:
Astronomical Institute of the Charles University, Faculty of Mathematics and Physics, V Holešovičkách 2, 18000, Praha 8, Czech Republic email: mariehrudkova@gmail.com
Simon Tulloch
Affiliation:
Isaac Newton Group of Telescopes, Apartado de Correos 321, E-38700, Santa Cruz de la Palma, Canary Islands, Spain
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Abstract

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Searching for transit timing variations in the known transiting exoplanet systems can reveal the presence of other bodies in the system. Here we report such searches for two transiting exoplanet systems, TrES-1 and WASP-2. Their new transits were observed with the 4.2m William Herschel Telescope located on La Palma, Spain. In a continuing programme, three consecutive transits were observed for TrES-1, and one for WASP-2 during September 2007. We used the Markov Chain Monte Carlo simulations to derive transit times and their uncertainties. The resulting transit times are consistent with the most recent ephemerides and no conclusive proof of additional bodies in either system was found.

Information

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S253: Transiting Planets , May 2008 , pp. 446 - 449
Copyright
Copyright © International Astronomical Union 2009

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