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Transit Timing Variation (TTV) of hot Jupiters provides direct observational evidence of planet tidal dissipation. Detecting tidal dissipation through TTV needs high precision transit timings and long timing baselines. In this work, we…

Earth and Planetary Astrophysics · Physics 2022-05-11 Fan Yang , Wei Wang , Xing Wei , Hui Zhang , Ji-Lin Zhou , Su-Su Shan , Jie Zheng , Wei-Kai Zong , Ming Yang , Yu Bai , Song Wang , Jia-Chen Zheng , Yu-Ru Xu , Yu-Feng Li , You-Jun Lu , Ji-Feng Liu

The discovery of the first transiting hot Jupiters (HJs; giant planets on orbital periods shorter than $P\sim10$ days) was announced more than twenty years ago. As both ground- and space-based follow-up observations are piling up, we are…

Earth and Planetary Astrophysics · Physics 2024-06-05 P. Leonardi , V. Nascimbeni , V. Granata , L. Malavolta , L. Borsato , K. Biazzo , A. F. Lanza , S. Desidera , G. Piotto , D. Nardiello , M. Damasso , A. Cunial , L. R. Bedin

The origin of warm Jupiters (gas giant planets with periods between 10 and 200 days) is an open question in exoplanet formation and evolution. We investigate a particular migration theory in which a warm Jupiter is coupled to a perturbing…

Earth and Planetary Astrophysics · Physics 2021-03-31 Jonathan M. Jackson , Rebekah I. Dawson , Andrew Shannon , Cristobal Petrovich

The TASTE project is searching for low-mass planets with the Transit Timing Variation (TTV) technique, by gathering high-precision, short-cadence light curves for a selected sample of transiting exoplanets. It has been claimed that the "hot…

We have observed 7 new transits of the `hot Jupiter' WASP-5b using a 61 cm telescope located in New Zealand, in order to search for transit timing variations (TTVs) which can be induced by additional bodies existing in the system. When…

In a transiting planetary system, the presence of a second planet will cause the time interval between transits to vary. These transit timing variations (TTV) are particularly large near mean-motion resonances and can be used to infer the…

Astrophysics · Physics 2007-05-23 Jason H. Steffen , Eric Agol

Hot Jupiters are giant Jupiter-like exoplanets that orbit 100x closer to their host stars than Jupiter does to the Sun. These planets presumably form in the outer part of the primordial disc from which both the central star and surrounding…

Solar and Stellar Astrophysics · Physics 2016-06-21 JF Donati , C Moutou , L Malo , C Baruteau , L Yu , E Hebrard , G Hussain , S Alencar , F Menard , J Bouvier , P Petit , M Takami , R Doyon , A Collier Cameron

In this study, we present a comprehensive analysis of transit timing variations (TTVs) in the ultra-short-period gas giant WASP-19b, which orbits a G-type main-sequence star. Our analysis is based on a dataset comprising 204 transit light…

Earth and Planetary Astrophysics · Physics 2025-06-23 Shraddha Biswas , Ing-Guey Jiang , Li-Chin Yeh , Hsin-Min Liu , Kaviya Parthasarathy , Devesh P. Sariya , D. Bisht , Mohit Singh Bisht , A. Raj

We present our analysis of the K2 short-cadence data of two previously known hot Jupiter exoplanets: WASP-55b and WASP-75b. The high precision of the K2 lightcurves enabled us to search for transit timing and duration variations, rotational…

Earth and Planetary Astrophysics · Physics 2018-02-07 B. J. M. Clark , D. R. Anderson , C. Hellier , O. D. Turner , T. Močnik

K2-19 is a star, slightly smaller than the Sun, that hosts three transiting planets. Two of these, K2-19 b and c, are between the size of Neptune and Saturn and have orbital periods near a 3:2 commensurability, and exhibit strong…

Earth and Planetary Astrophysics · Physics 2025-09-23 Paige M. Entrican , Erik A. Petigura , Antoine C. Petit , Gregory J. Gilbert , Kento Masuda

Mazeh, Holczer, and Shporer (2015) have presented an approach that can, in principle, use the derived transit timing variation (TTV) of some transiting planets observed by the $Kepler$ mission to distinguish between prograde and retrograde…

We present new transit timing measurements for the white dwarf-cold Jupiter system WD 1856+534, extending the baseline of observations from 311 epochs to 1498 epochs. The planet is unlikely to have survived the host star's red-giant phase…

The architectures of multiple planet systems can provide valuable constraints on models of planet formation, including orbital migration, and excitation of orbital eccentricities and inclinations. NASA's Kepler mission has identified 1235…

We report the first results from a search for transiting warm Jupiter exoplanets - gas giant planets receiving stellar irradiation below about $10^8$ erg s$^{-1}$ cm$^{-2}$, equivalent to orbital periods beyond about 10 days around Sun-like…

Ground-based simultaneous multiband transit observations allow an accurate system parameters determination and may lead to the detection and characterization of additional bodies via the transit timing variations (TTVs) method. We aimed to…

Solar and Stellar Astrophysics · Physics 2015-06-03 Nikolay Nikolov , Thomas Henning , Johannes Koppenhoefer , Monika Lendl , Gracjan Maciejewski , Jochen Greiner

We perform numerical calculations of the expected transit timing variations (TTVs) induced on a Hot-Jupiter by an Earth-mass perturber. Motivated by the recent discoveries of retrograde transiting planets, we concentrate on an investigation…

Earth and Planetary Astrophysics · Physics 2010-03-15 Matthew J. Payne , Eric B. Ford , Dimitri Veras

Aims: We present 11 high-precision photometric transit observations of the transiting super-Earth planet GJ1214b. Combining these data with observations from other authors, we investigate the ephemeris for possible signs of transit timing…

Transiting exoplanets in multi-planet systems have non-Keplerian orbits which can cause the times and durations of transits to vary. The theory and observations of transit timing variations (TTV) and transit duration variations (TDV) are…

Earth and Planetary Astrophysics · Physics 2025-05-01 Eric Agol , Daniel Fabrycky

Theory suggests that the orbits of some close-in giant planets should decay due to tidal interactions with their host stars. To date, WASP-12b is the only hot Jupiter reported to have a decaying orbit, at a rate of 29$\pm$2 msec…

Earth and Planetary Astrophysics · Physics 2021-01-27 Jake D. Turner , Andrew Ridden-Harper , Ray Jayawardhana

We analyze a large number of citizen science data and identify eight Hot Jupiter systems that show evidence for deviations from a constant orbital period: HAT-P-19 b, HAT-P-32 b, TrES-1 b, TrES-2 b, TrES-5 b, WASP-4 b, WASP-10 b, and…

Earth and Planetary Astrophysics · Physics 2022-11-04 Simone R. Hagey , Billy Edwards , Aaron C. Boley