Exoplanets Search in NGC 188 and Several Other Open Clusters

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

As a pilot project in the detection of exoplanets in star clusters using transit measurements, we have made use of the time series CCD photometry survey of the old open cluster NGC 188 obtained by the wide-field observations (one squre segree) of the BATC (Beijng-Arizona-Taiwan-Connecticut) Schmidt telescope at Beijing Astronomical observatory. The main purpose is to assess whether the photometric accuracy of the BATC observations can be used to search for Jupiter-sized exoplanets. As a follow-up study, using the One-meter telescope (LOT) on the Lulin Observatory of National Central University, we will observe NGC 2324, Haffner 6, Haffner 8, NGC 2374, NGC 2420 and NGC 2506 in R-band. The Box-fitting Least Squares (BLS) algorithm will be developed to analyse the possible transit features from the light curves. The preliminary results will be reported.

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