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Methods: data analysis – binaries: eclipsing – Hertzsprung–Russell (HR) diagram – planetary systems – open clusters and associations: general – open clusters and associations: individual: NGC 7789
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Full-Text Articles in Physical Sciences and Mathematics
A Survey For Planetary Transits In The Field Of Ngc 7789, D. M. Bramich, Keith Horne, I. A. Bond, R. A. Street, A. Collier Cameron, B. Hood, J. Cooke, D. James, T. A. Lister, David Mitchell, K. Pearson, A. Penny, A. Quirrenbach, N. Safizadeh, Y. Tsapras
A Survey For Planetary Transits In The Field Of Ngc 7789, D. M. Bramich, Keith Horne, I. A. Bond, R. A. Street, A. Collier Cameron, B. Hood, J. Cooke, D. James, T. A. Lister, David Mitchell, K. Pearson, A. Penny, A. Quirrenbach, N. Safizadeh, Y. Tsapras
Physics
We present results from 30 nights of observations of the open cluster NGC 7789 with the Wide Field Camera on the Isaac Newton Telescope, La Palma. From ∼900 epochs, we obtained light curves and Sloan r'− i' colours for ∼33000 stars, with ∼2400 stars having better than 1 percent precision. We expected to detect ∼2 transiting hot Jupiter planets if 1 percent of stars host such a companion and a typical hot Jupiter radius is ∼1.2 RJ. We find 24 transit candidates, 14 of which we can assign a period. We rule out the transiting planet model …