The UNSW Extrasolar Planet Search: Methods and First Results from a Field Centred on NGC 6633
Astrophysics, abstract
astro-ph/0501269
From: Marton Hidas [view email]
Date: Fri, 14 Jan 2005 07:41:45 GMT (234kb)
The UNSW Extrasolar Planet Search: Methods and First Results from a
Field Centred on NGC 6633
Authors:
M. G. Hidas (1),
M. C. B. Ashley (1),
J. K. Webb (1),
M. Irwin (2),
A. Phillips (1),
H. Toyozumi (1),
A. Derekas (1 and 3),
J. L. Christiansen (1),
C. Nutto (1),
S. Crothers (1) ((1) University of NSW, Australia, (2) IoA, Cambridge, UK, (3) University of Sydney, Australia)
Comments: 15 pages, 8 figures, submitted to MNRAS
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.
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