Poster Presentation

The Transit Timing Variation of a Neptune-Mass Planet HAT-P-26b in TESS Era

Author(s): Napaporn A-thano (NTHU, Taiwan), Supachai Awiphan (NARIT, Thailand), Ing-Guey Jiang (NTHU, Taiwan), Eamonn Kerins (University of Manchester, UK) and Akshay Priyadarshi (University of Manchester, UK)

Presenter: Napaporn A-thano (National Tsing Hua University)

The Transit Timing Variation (TTV) of transiting exoplanets was introduced as one of the successful methods for the discoveries of new exoplanets. The HAT-P-26b is a transiting Neptune-mass exoplanet orbiting a K1 dwarf star with a period of 4.234 day. From previous studies, the planet was shown to have a TTV signal of 4-min amplitude. In order to investigate this possible variability, we perform an analysis combining the newly TESS light curves with our photometric data through ground-base long-term observations from 2015 to 2019 using the Thai telescopes network, which includes the 0.7-m Thai Robotic Telescopes and the 2.4-m telescope at Thai National Observatory. The results will be presented, summarized, and concluded in this presentation.