The contribution of the major planet search surveys to EChO target   selection
  The EChO core science will be based on a three tier survey, each with increasing sensitivity, in order to study the population of exo-planets from super-Earths to Jupiter-like planets, in the very hot to temperate zones (temperatures of 300 K - 3000 K) of F to M-type host stars. To achieve a meaningful outcome an accurate selection of the target sample is needed. In this paper we analyse the targets, suitable for EChO observations, expected to result from a sample of present and forthcoming detection surveys. Exoplanets currently known are already sufficient to provide a large and diverse sample. However we expect the results from these surveys to increase the sample of smaller planets that will allow us to optimize the EChO sample selection. 
Giuseppina Micela, Gaspar A. Bakos, Mercedes Lopez-Morales, Pierre F.   L. Maxted, Isabella Pagano, Alessandro Sozzetti and ...
astro-ph.EP