학술논문
Looking For Timing Variations in the Transits of 16 Exoplanets
Document Type
Working Paper
Author
Yalçınkaya, S.; Esmer, E. M.; Baştürk, Ö.; Muhaymin, A.; Kutluay, A. C.; Silistre, D. İ.; Akar, F.; Southworth, J.; Mancini, L.; Davoudi, F.; Karamanlı, E.; Tezcan, F.; Demir, E.; Yılmaz, D.; Güleroğlu, E.; Tekin, M.; Taşkın, İ.; Aladağ, Y.; Sertkan, E.; Kurt, U. Y.; Fişek, S.; Kaptan, S.; Aliş, S.; Aksaker, N.; Yelkenci, F. K.; Tezcan, C. T.; Kaya, A.; Oğlakkaya, D.; Aydın, Z. S.; Yeşilyaprak, C.
Source
Subject
Language
Abstract
We update the ephemerides of 16 transiting exoplanets using our ground-based observations, new TESS data, and previously published observations including those of amateur astronomers. All these light curves were modeled by making use of a set of quantitative criteria with the EXOFAST code to obtain mid-transit times. We searched for statistically significant secular and/or periodic trends in the mid-transit times. We found that the timing data are well modeled by a linear ephemeris for all systems except for XO-2 b, for which we detect an orbital decay with the rate of -12.95 $\pm$ 1.85 ms/yr that can be confirmed with future observations. We also detect a hint of potential periodic variations in the TTV data of HAT-P-13 b which also requires confirmation with further precise observations.
Comment: 23 pages, 17 figures
Comment: 23 pages, 17 figures