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

Southworth, John; 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, O.; Alsubai, K.A.; Andersen, J.M.; Bozza, V.; Bramich, D.M.; Browne, P.; Ciceri, S.; D'Ago, G.; Damerdji, Y.; 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, J.; Tsapras, Y.; Vilela, C.

High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26 Thumbnail


T.C. Hinse

M. Burgdorf

S. Calchi Novati

M. Dominik

P. Galianni

T. Gerner

E. Giannini

S.-H. Gu

M. Hundertmark

U.G. Jørgensen

D. Juncher

E. Kerins

L. Mancini

M. Rabus

D. Ricci

S. Schäfer

J. Skottfelt

J. Tregloan-Reed

X.-B. Wang

O. Wertz

K.A. Alsubai

J.M. Andersen

V. Bozza

D.M. Bramich

P. Browne

S. Ciceri

G. D'Ago

Y. Damerdji

C. Diehl

P. Dodds

A. Elyiv

X.-S. Fang

F. Finet

R. Figuera Jaimes

S. Hardis

K. Harpsøe

J. Jessen-Hansen

N. Kains

H. Kjeldsen

H. Korhonen

C. Liebig

M.N. Lund

M. Lundkvist

M. Mathiasen

M.T. Penny

A. Popovas

S. Prof.

S. Rahvar

K. Sahu

G. Scarpetta

R.W. Schmidt

F. Schönebeck

C. Snodgrass

R.A. Street

J. Surdej

Y. Tsapras

C. Vilela


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 and WASP-26 have been observed with Spitzer, and WASP-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.


Southworth, J., Hinse, T., Burgdorf, M., Calchi Novati, S., Dominik, M., Galianni, P., …Vilela, C. (2014). High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26. Monthly Notices of the Royal Astronomical Society, 444(1), 776 -789.

Journal Article Type Article
Acceptance Date Jul 23, 2014
Online Publication Date Aug 20, 2014
Publication Date Oct 11, 2014
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 444
Issue 1
Pages 776 -789
Keywords stars: fundamental parameters, planetary systems, stars: individual: WASP-24, stars: individual: WASP-25, stars: individual: WASP-26
Publisher URL


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