RESEARCH
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Transit Timing Variations - the contribution of amateur astronomers
Oral comunication

G. Boué, M. Montalto, N. C. Santos

Abstract
Because of planet-planet interactions, a transiting planet in a multiplanetary system does not cross the stellar disk with constant period. The small variations of mid-transit time with respect to an unperturbed case are called TTV (Transit Timing Variations). Interestingly, it is possible to reconstruct the trajectory of an unknown perturber from the TTV signal only. With this method, it is even possible to detect Earth-like planets, depending on the orbital configuration. But to do so, one needs lots of transit observations.

XXI Encontro Nacional de Astronomia e Astrofisica
Coimbra, Portugal
2011 September

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia