High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 andWASP-26*

Southworth, J.; Hinse, T. C.; Burgdorf, M.; Calchi Novati, S.; Dominik, M.; Galianni, P.; Gerner, T.; Giannini, E.; Gu, S.-H.; Hundertmark, M.; Jørgensen, U. G.; Juncher, D.; Kerins, E.; Mancini, L.; Rabus, M.; Ricci, D.; Schäfer, S.; Skottfelt, J.; Tregloan-Reed, J.; Wang, X.-B.; Wertz, Olivier; Alsubai, K. A.; Andersen, J. M.; Bozza, V.; Bramich, D. M.; Browne, P.; Ciceri, S.; D'Ago, G.; Damerdji, Yassine; Diehl, C.; Dodds, P.; Elyiv, A.; Fang, X.-S.; Finet, F.; Figuera Jaimes, R.; Hardis, S.; Harpsøe, K.; Jessen-Hansen, J.; Kains, N.; Kjeldsen, H.; Korhonen, H.; Liebig, C.; Lund, M. N.; Lundkvist, M.; Mathiasen, M.; Penny, M. T.; Popovas, A.; Prof, S.; Rahvar, S.; Sahu, K.; Scarpetta, G.; Schmidt, R. W.; Schönebeck, F.; Snodgrass, C.; Street, R. A.; Surdej, Jean; Tsapras, Y.; Vilela, C.

doi:10.1093/mnras/stu1492

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High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 andWASP-26*

Southworth, J.; Hinse, T. C.; Burgdorf, M. et al.

2014 • In Monthly Notices of the Royal Astronomical Society, 444 (1), p. 776-789

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https://hdl.handle.net/2268/183679

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10.1093/mnras/stu1492

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Keywords :

Fundamental parameters; Planetary systems; Stars: individual: WASP-24; Stars: individual: WASP-25; Stars: individual: WASP-26

Abstract :

[en] We present time series photometric observations of 13 transits in the planetary systems WASP-24, WASP-25 and WASP-26. All three systems have orbital obliquity measurements, WASP-24 andWASP-26 have been observed with Spitzer, andWASP-25 was previously comparatively neglected. Our light curves were obtained using the telescope-defocussing method and have scatters of 0.5-1.2 mmag relative to their best-fitting geometric models. We use these data to measure the physical properties and orbital ephemerides of the systems to high precision, finding that our improved measurements are in good agreement with previous studies. High-resolution Lucky Imaging observations of all three targets show no evidence for faint stars close enough to contaminate our photometry. We confirm the eclipsing nature of the star closest to WASP-24 and present the detection of a detached eclipsing binary within 4.25 arcmin of WASP-26. © 2014 The Authors.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Southworth, J.; Astrophysics Group, Keele University, Staffordshire, United Kingdom

Hinse, T. C.; Korea Astronomy and Space Science Institute, Daejeon, South Korea

Burgdorf, M.; HE Space Operations GmbH, Flughafenallee 24, Bremen, Germany

Calchi Novati, S.; Dipartimento di Fisica 'E.R. Caianiello', Università. di Salerno, Via Giovanni Paolo II 132, Fisciano (SA), Italy, Istituto Internazionale per gli Alti Studi Scientifici (IIASS), Vietri Sul Mare (SA), Italy

Dominik, M.; SUPA, University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, United Kingdom

Galianni, P.; SUPA, University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, United Kingdom

Gerner, T.; Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, Heidelberg, Germany

Giannini, E.; Astronomisches Rechen-Institut, Zentrum für Astronomie, Universität Heidelberg, Mönchhofstraße 12-14, Heidelberg, Germany

Gu, S.-H.; Yunnan Observatories, Chinese Academy of Sciences, Kunming, China, Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China

Hundertmark, M.; SUPA, University of St Andrews, School of Physics and Astronomy, North Haugh, St Andrews, United Kingdom

More authors (48 more)

Language :

English

Title :

High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 andWASP-26*

Publication date :

2014

Journal title :

Monthly Notices of the Royal Astronomical Society

ISSN :

0035-8711

eISSN :

1365-2966

Publisher :

Oxford University Press

Volume :

444

Issue :

Pages :

776-789

Peer reviewed :

Peer Reviewed verified by ORBi

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