Searching for planetary transits in the field of open cluster NGC 6819 – IMonthly Notices of the Royal Astronomical Society
AbstractWe present results from our survey for planetary transits in the field of the intermediate-age (∼2.5 Gyr), metal-rich ([Fe/H] ∼+0.07) open cluster NGC 6819. We have obtained high-precision time-series photometry for over 38 000 stars in this field and have developed an effective matched-filter algorithm to search for photometric transits. This algorithm identified 8 candidate stars showing multiple transit-like events, plus 3 stars with single eclipses. On closer inspection, while most are shown to be low-mass stellar binaries, some of these events could be the result of brown dwarf companions. The data for one of the single-transit candidates indicate a minimum radius for the companion similar to that of HD 209458b.
Copyright2003 Royal Astronomical Society.
Citation InformationR. A. Street, Keith Horne, T. A. Lister, A. Penny, et al.. "Searching for planetary transits in the field of open cluster NGC 6819 – I" Monthly Notices of the Royal Astronomical Society Vol. 340 (2003) p. 1287 - 1297
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