Are There Transit Timing Variations for the Exoplanet Qatar-1b?

  title={Are There Transit Timing Variations for the Exoplanet Qatar-1b?},
  author={Li-Hsin Su and Ing-Guey Jiang and Devesh P. Sariya and Chiao-Yu Lee and Li-Chin Yeh and Vineet Kumar Mannaday and Parijat Thakur and Devendra K. Sahu and Swadesh Chand and Aleksey Shlyapnikov and V. V. Moskvin and Vladimir Ignatov and David Mkrtichian and Evgeny Griv},
  journal={The Astronomical Journal},
Motivated by the unsettled conclusion on whether there are any transit timing variations (TTVs) for the exoplanet Qatar-1b, 10 new transit light curves are presented and a TTV analysis with a baseline of 1400 epochs is performed. Because the linear model provides a good fit with a reduced chi-square of and the false-alarm probabilities of the possible TTV frequencies are as large as 35%, our results are consistent with a null-TTV model. Nevertheless, a new ephemeris with a reference time of T0… Expand


KELT-22Ab: A Massive, Short-Period Hot Jupiter Transiting a Near-solar Twin
We present the discovery of KELT-22Ab, a hot Jupiter from the KELT-South survey. KELT-22Ab transits the moderately bright ($V\sim 11.1$) Sun-like G2V star TYC 7518-468-1. The planet has an orbitalExpand
New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE, and TRAPPIST-South
Funding for WASP comes from consortium universities and from the UK’s Science and Technology Facilities Council. The Euler Swiss telescope is supported by the Swiss National Science Foundation.Expand
Numerical Recipes: FORTRAN
The Diskette v 2.04, 3.5'' (720k) for IBM PC, PS/2 and compatibles [DOS] Reference Record created on 2004-09-07, modified on 2016-08-08. Expand
Diamonds are the results derived from light curves
  • 2013
The value of ∆T as a function of epoch. Triangles are the results derived from light curves in von Essen et al. (2013), squares are the results derived from light curves in Covino et al
  • 2013
Bulletin de la Société Royale des Sciences de Liège
  • Proceedings of the First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop
  • 2016
Circles are the results of our own observational data
  • 2015