Transit timing variations and linear ephemerides of confirmed Kepler transiting exoplanets  

作　　者：Pavol Gajdo? Martin Vaňko ?tefan Parimucha 

机构地区：[1]Institute of Physics, Faculty of Science, Pavol Jozef šafárik University [2]Astronomical Institute, Slovak Academy of Sciences

出　　处：《Research in Astronomy and Astrophysics》2019年第3期79-84,共6页天文和天体物理学研究（英文版）

基　　金：supported by the Slovak Research and Development Agency under contract No. APVV-15-0458;the project VEGA 2/0031/18;supported by the VVGS-PF-2017-724 internal grant of the Faculty of Science, P. J.šafárik University in Kosice

摘　　要：We determine new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of the Kepler mission. We analysed transit-timing variation(TTV) diagrams of 2098 extrasolar planets. The TTVs of 121 objects were excluded(because of insufficient datapoints, influence of stellar activity, etc.). Finally, new linear ephemerides of 1977 exoplanets from the Kepler archive are presented. A significant linear trend was observed on TTV diagrams of approximately 35% of the exoplanets studied. Knowing the correct linear ephemeris is key for successful follow-up observations of transits. Residual TTV diagrams of 64 analysed exoplanets show periodic variation, and 43 of these TTV planets were not previously reported.We determine new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of the Kepler mission. We analysed transit-timing variation(TTV) diagrams of 2098 extrasolar planets. The TTVs of 121 objects were excluded(because of insufficient datapoints, influence of stellar activity, etc.). Finally, new linear ephemerides of 1977 exoplanets from the Kepler archive are presented. A significant linear trend was observed on TTV diagrams of approximately 35% of the exoplanets studied. Knowing the correct linear ephemeris is key for successful follow-up observations of transits. Residual TTV diagrams of 64 analysed exoplanets show periodic variation, and 43 of these TTV planets were not previously reported.

关 键 词：stars planetary systems-eclipses-techniques PHOTOMETRIC 

分 类 号：P[天文地球]