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Short period eclipsing binary candidates identified using SuperWASP

Norton, A. J.; Payne, S. G.; Evans, T.; West, R. G.; Wheatley, P. J.; Anderson, D. R.; Barros, S. C. C.; Butters, O. W.; Collier Cameron, A.; Christian-Prince, D. J.; Enoch, B.; Faedi, F.; Haswell, C. A.; Hellier, C.; Holmes, S.; Horne, K. D.; Kane, S. R.; Lister, T. A.; Maxted, P. F. L.; Parley, N.; Pollacco, D.; Simpson, E. K.; Skillen, I.; Smalley, B.; Southworth, J. and Street, R. A. (2011). Short period eclipsing binary candidates identified using SuperWASP. Astronomy & Astrophysics, 528, article no. A90.

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We present light curves and periods of 53 candidates for short period eclipsing binary stars identified by SuperWASP. These include 48 newly identified objects with periods <2 × 104 s (~0.23 d), as well as the shortest period binary known with main sequence components (GSC2314-0530 = 1SWASP J022050.85 + 332047.6) and four other previously known W UMa stars (although the previously reported periods for two of these four are shown to be incorrect). The period distribution of main sequence contact binaries shows a sharp cut-off at a lower limit of around 0.22 d, but until now, very few systems were known close to this limit. These new candidates will therefore be important for understanding the evolution of low mass stars and to allow investigation of the cause of the period cut-off.

Item Type: Journal Article
Copyright Holders: 2011 ESO
ISSN: 1432-0746
Keywords: eclipsing binaries
Academic Unit/Department: Science > Physical Sciences
Mathematics, Computing and Technology > Computing & Communications
Other Departments > Student Services
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 28365
Depositing User: Andrew Norton
Date Deposited: 08 Mar 2011 14:46
Last Modified: 09 Aug 2014 07:45
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