SuperWASP-North Extra-solar Planet Candidates between 3hr < RA < 6hr - AstrophysicsReportar como inadecuado

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Abstract: The Wide Angle Search for Planets WASP photometrically surveys a largenumber of nearby stars to uncover candidate extrasolar planet systems by virtueof small-amplitude lightcurve dips on a < 5-day timescale typical of the``Hot-Jupiters.- Observations with the SuperWASP-North instrument betweenApril and September 2004 produced a rich photometric dataset of some 1.3billion datapoints from 6.7 million stars. Our custom-built data acquisitionand processing system produces ~0.02 mag photometric precision at V=13.We present the transit-candidates in the 03h-06h RA range. Of 141,895lightcurves with sufficient sampling to provide adequate coverage, 2688 showstatistically significant transit-like periodicities. Of these, 44 pass visualinspection of the lightcurve, of which 24 are removed through a set of cuts onthe statistical significance of artefacts. All but 4 of the remaining 20objects are removed when prior information at higher spatial-resolution fromexisting catalogues is taken into account. Of the four candidates remaining,one is considered a good candidate for follow-up observations with threefurther second-priority targets. We provide detailed information on thesecandidates, as well as a selection of the false-positives and astrophysicalfalse-alarms that were eliminated, and discuss briefly the impact of samplingon our results.

Autor: W. I. Clarkson, B. Enoch, C. A. Haswell, A. J. Norton, D. J. Christian, A. Collier Cameron, S. R. Kane, K. D. Horne, T. A. Lister



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