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High-precision photometry by telescope defocusing - V. WASP-15 and WASP-16

Southworth, J.; Mancini, L.; Browne, P.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Gerner, T.; Hinse, T. C.; Jorgensen, U. G.; Kains, N.; Ricci, D.; Schafer, S.; Schonebeck, F.; Tregloan-Reed, J.; Alsubai, K. A.; Bozza, V.; Chen, G.; Dodds, P.; Dreizler, S.; Fang, X.- S.; Finet, F.; Gu, S.- H.; Hardis, S.; Harpsoe, K.; Henning, T.; Hundertmark, M.; Jessen-Hansen, J.; Kerins, E.; Kjeldsen, H.; Liebig, C.; Lund, M. N.; Lundkvist, M.; Mathiasen, M.; Nikolov, N.; Penny, M. T.; Proft, S.; Rahvar, S.; Sahu, K.; Scarpetta, G.; Skottfelt, J.; Snodgrass, C.; Surdej, J. and Wertz, O. (2013). High-precision photometry by telescope defocusing - V. WASP-15 and WASP-16. Monthly Notices of the Royal Astronomical Society, 434(2) pp. 1300–1308.

DOI (Digital Object Identifier) Link: https://doi.org/10.1093/mnras/stt1089
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Abstract

We present new photometric observations of WASP-15 and WASP-16, two transiting extrasolar planetary systems with measured orbital obliquities but without photometric follow-up since their discovery papers. Our new data for WASP-15 comprise observations of one transit simultaneously in four optical passbands using GROND on the MPG/European Southern Observatory (ESO) 2.2 m telescope, plus coverage of half a transit from DFOSC on the Danish 1.54 m telescope, both at ESO La Silla. For WASP-16 we present observations of four complete transits, all from the Danish telescope. We use these new data to refine the measured physical properties and orbital ephemerides of the two systems. Whilst our results are close to the originally determined values for WASP-15, we find that the star and planet in the WASP-16 system are both larger and less massive than previously thought.

Item Type: Journal Item
Copyright Holders: 2013 The Authors
ISSN: 1365-2966
Keywords: fundamental parameters of stars; planetary systems
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Centre for Electronic Imaging (CEI)
Space
Item ID: 43040
Depositing User: Colin Snodgrass
Date Deposited: 21 May 2015 09:29
Last Modified: 07 Dec 2018 10:31
URI: http://oro.open.ac.uk/id/eprint/43040
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