Non-sinusoidal transit timing variations for the exoplanet HAT-P-12b

作     者：Devesh P.Sanya Ing-Guey Jiang Li-Hsin Su Li-Chin Yeh Tze-En Chang V.V.Moskvin A.A.Shlyapnikov V.Ignatov David Mkrtichian Evgeny Griv Vineet Kumar Mannaday Parijat Thakur D.K.Sahu Swadesh Chand D.Bisht Zhao Sun Jianghui Ji Devesh P.Sariya;Ing-Guey Jiang;Li-Hsin Su;Li-Chin Yeh;Tze-En Chang;V.V.Moskvin;A.A.Shlyapnikov;V.Ignatov;David Mkrtichian;Evgeny Griv;Vineet Kumar Mannaday;Parijat Thakur;D.K.Sahu;Swadesh Chand;D.Bisht;Zhao Sun;Jianghui Ji

作者机构：Department of Physics and Institute of Astronomy“National Tsing-Hua University”HsinChu 30013China Institute of Computational and Modeling Science“National Tsing-Hua University”HsinChu 30013China Crimean Astrophysical Observatory298409NauchnyCrimea National Astronomical Research Institute of Thailand(NARIT)Siripanich Building191 Huaykaew RoadMuang DistrictChiangmaiThailand Department of PhysicsBen-Gurion UniversityBeer-Sheva 84105Israel Department of Pure&Applied PhysicsGuru Ghasidas Vishwavidyalaya(A Central University)Bilaspur(C.G.)-495009India Indian Institute of AstrophysicsBangalore 560034India Key Laboratory for Researches in Galaxies and CosmologyUniversity of Science and Technology of ChinaChinese Academy of Sciences Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210008China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2021年第21卷第4期

页      面：253-263页

核心收录：

学科分类：0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 070401[理学-天体物理] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：supported by grants from the Ministry of Science and Technology(MOST),Taiwan,China.The grant numbers are MOST 105-2119-M-007-029-MY3,MOST 1062112-M-007-006-MY3 the University Grants Commission(UGC) financial support through Major Research Project no.UGC-MRP 43-521/2014(SR) IUCCA,Pune,India for providing supports through the IUCCA Associateship Programme financially supported by the National Natural Science Foundation of China(Grant Nos.11590782 and 11421303) supported by the B-type Strategic Priority Program of the Chinese Academy of Sciences(Grant No.XDB41000000) the National Natural Science Foundation of China(Grant No.11773081) CAS Interdisciplinary Innovation Team Foundation of Minor Planets of the Purple Mountain Observatory 

主　　题：planetary systems techniques photometric 

摘      要：Considering the importance of investigating the transit timing variations(TTVs)of transiting exoplanets,we present a follow-up study of HAT-P-12 *** include six new light curves observed between2011 and 2015 from three different observatories,in association with 25 light curves taken from the published *** sample of the data used thus covers a time span of~10.2 years with a large coverage of epochs(1160)for the transiting events of the exoplanet HAT-P-12 *** light curves are utilized to determine the orbital parameters and conduct an investigation of possible *** new linear ephemeris shows a large value of reducedχ^(2),i.e.X_(red)^(2)(23)=7.93,and the sinusoidal fitting using the prominent frequency coming from a periodogram shows a reducedχ^(2) around *** on these values and the corresponding O-C diagrams,we suspect the presence of a possible non-sinusoidal TTV in this planetary ***,we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reducedχ^(2) value of around 2.