High-precision photometry by telescope defocussing. V. WASP-15 and WASP-16
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/ESO 2.2m telescope, plus coverage of half a transit from DFOSC on the Danish 1.54m 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.
Keywords
Cite
@article{arxiv.1306.3509,
title = {High-precision photometry by telescope defocussing. V. WASP-15 and WASP-16},
author = {J. Southworth and L. Mancini and P. Browne and M. Burgdorf and S. Calchi Novati and M. Dominik and T. Gerner and T. C. Hinse and U. G. Jorgensen and N. Kains and D. Ricci and S. Schafer and F. Schonebeck and J. Tregloan-Reed and K. A. Alsubai and V. Bozza and G. Chen and P. Dodds and S. Dreizler and X. -S. Fang and F. Finet and S. -H. Gu and S. Hardis and K. Harpsoe and Th. Henning and M. Hundertmark and J. Jessen-Hansen and E. Kerins and H. Kjeldsen and C. Liebig and M. N. Lund and M. Lundkvist and M. Mathiasen and N. Nikolov and M. T. Penny and S. Proft and S. Rahvar and K. Sahu and G. Scarpetta and J. Skottfelt and C. Snodgrass and J. Surdej and O. Wertz},
journal= {arXiv preprint arXiv:1306.3509},
year = {2015}
}
Comments
Accepted for publication in MNRAS; 9 pages, 7 tables, 6 figures. The light curves are available from http://www.astro.keele.ac.uk/jkt/data-teps.html and the results are included in TEPCat at http://www.astro.keele.ac.uk/jkt/tepcat/