Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-01-14
Mon.Not.Roy.Astron.Soc. 360 (2005) 703-717
Astronomy and Astrophysics
Astrophysics
16 pages, 9 figures, version published in MNRAS Updated figures, references, and additional discussion in section 7
Scientific paper
10.1111/j.1365-2966.2005.09061.x
We report on the current status of the University of New South Wales Extrasolar Planet Search project, giving details of the methods we use to obtain millimagnitude precision photometry using the 0.5m Automated Patrol Telescope. We use a novel observing technique to optimally broaden the PSF and thus largely eliminate photometric noise due to intra-pixel sensitivity variations on the CCD. We have observed 8 crowded Galactic fields using this technique during 2003 and 2004. Our analysis of the first of these fields (centred on the open cluster NGC 6633) has yielded 49 variable stars and 4 shallow transit candidates. Follow-up observations of these candidates have identified them as eclipsing binary systems. We use a detailed simulation of our observations to estimate our sensitivity to short-period planets, and to select a new observing strategy to maximise the number of planets detected.
Ashley Michael C. B.
Christiansen Jessie L.
Crothers S.
Derekas Aliz
Hidas Marton G.
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