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20 April 2024 |
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The UNSW Extrasolar Planet Search: Methods and First Results from a Field Centred on NGC 6633 | | M. G. Hidas
; M. C. B. Ashley
; J. K. Webb
; M. Irwin
; A. Phillips
; H. Toyozumi
; A. Derekas
; J. L. Christiansen
; C. Nutto
; S. Crothers
; | | Date: |
14 Dec 2004 | | Journal: | Mon.Not.Roy.Astron.Soc. 360 (2005) 703-717 | | Subject: | astro-ph | | Affiliation: | 1 and 3), J. L. Christiansen , C. Nutto , S. Crothers ( University of NSW, Australia, IoA, Cambridge, UK, University of Sydney, Australia | | Abstract: | 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. | | Source: | arXiv, astro-ph/0501269 | | Services: | Forum | Review | PDF | Favorites | |
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