@article{ebc99ecfe7be42188c5790a2e4f97831,
title = "Ephemeris refinement of 21 hot Jupiter exoplanets with high timing uncertainties ?",
abstract = "Transit events of extrasolar planets offer a wealth of information for planetary characterization. However, for many known targets, the uncertainty of their predicted transit windows prohibits an accurate scheduling of follow-up observations. In this work, we refine the ephemerides of 21 hot Jupiter exoplanets with the largest timing uncertainties. We collected 120 professional and amateur transit light curves of the targets of interest, observed with a range of telescopes of 0.3 m-2.2 m, and analyzed them along with the timing information of the planets discovery papers. In the case of WASP-117b, we measured a timing deviation compared to the known ephemeris of about 3.5 h, and for HAT-P-29b and HAT-P-31b the deviation amounted to about 2 h and more. For all targets, the new ephemeris predicts transit timings with uncertainties of less than 6 min in the year 2018 and less than 13 min until 2025. Thus, our results allow for an accurate scheduling of follow-up observations in the next decade.",
keywords = "Methods: observational, planets and satellites: fundamental parameters, techniques: photometric",
author = "M. Mallonn and {Von Essen}, C. and E. Herrero and X. Alexoudi and T. Granzer and M. Sosa and Strassmeier, {K. G.} and G. Bakos and D. Bayliss and R. Brahm and M. Bretton and F. Campos and L. Carone and Col{\'o}n, {K. D.} and Dale, {H. A.} and D. Dragomir and N. Espinoza and P. Evans and F. Garcia and Gu, {S. H.} and P. Guerra and Y. Jongen and A. Jord{\'a}n and W. Kang and E. Keles and T. Kim and M. Lendl and D. Molina and M. Salisbury and F. Scaggiante and A. Shporer and R. Siverd and E. Sokov and I. Sokova and A. W{\"u}nsche",
note = "Funding Information: E.H. acknowledges support by the Spanish Ministry of Economy and Competitiveness (MINECO) and the Fondo Europeo de Desarrollo Regional (FEDER) through grant ESP2016-80435-C2-1-R, as well as the support of the Generalitat de Catalunya/CERCA program. D. D. acknowledges support provided by NASA through Hubble Fellowship grant HST-HF2-51372.001- A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS5-26555. E.S. acknowledges support by the Russian Science Foundation grant No. 14-50-00043 for conducting international photometric observing campaign. I.S. acknowledges support by the Russian Foundation for Basic Research (project No. 17-02-00542). R.B. acknowledges support from FONDECYT Post-doctoral Fellowship Project No. 3180246. M.L. acknowledges support from the Austrian Research Promotion Agency (FFG) under project 859724 {"}GRAPPA{"}. S.-H.G. acknowledges the financial support from the National Natural Science Foundation of China (No.U1531121). L.C. recognizes funding from DLR - 50OR1804. Funding for the Stellar Astrophysics Centre is provided by The Danish National Research Foundation (Grant agreement no.: DNRF106). Publisher Copyright: {\textcopyright} ESO 2019.",
year = "2019",
month = feb,
day = "1",
doi = "10.1051/0004-6361/201834194",
language = "English (US)",
volume = "622",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
}