Dynamical Confinement of the Eccentricity of Exoplanets from Transit Photometry

Sándor, Zsolt (2006) Dynamical Confinement of the Eccentricity of Exoplanets from Transit Photometry. In: 4th Austrian-Hungarian Workshop on Celestial Mechanics Edited by Á. Süli, F. Freistetter, A. Pál. Publications of the Astronomy Department of the Eötvös University (18). ELTE Sokszorosítóüzeme, Budapest, pp. 137-147.

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Abstract

The probability of detection of Earth-like exoplanets may increase after the launch of the space missions using the transit photometry as observation method. By using this technique, however, only the semi-major axis of the detected planet can be determined, and there will be incomplete information regarding its orbital eccentricity. On the other hand, the orbital eccentricity of an Earth-like exoplanet is a very important parameter, since it gives information about its climate and habitability. In this paper a procedure is suggested for confining the eccentricity of an exoplanet discovered by transit photometry if beside the Earth-like planet, an already known giant planet also orbits in the system.

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