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Observed transit timing variation (TTV) potentially reveals the period decay caused by star-planet tidal interaction which can explain the orbital migration of hot Jupiters. We report the TTV of XO-3b, using TESS observed timings and…

Earth and Planetary Astrophysics · Physics 2022-02-25 Fan Yang , Xing Wei

TOI-2818 b is a hot Jupiter orbiting a slightly evolved G-type star on a 4.04-day orbit that shows transit timing variations (TTVs) suggestive of a decreasing orbital period. In the most recent year of TESS observations, transits were…

Nowadays, transit timing variations (TTVs) are proving to be a very valuable tool in exoplanetary science to detect exoplanets by observing variations in transit times. To study the transit timing variation of the hot Jupiter, TrES-2b, we…

Earth and Planetary Astrophysics · Physics 2024-09-19 Shraddha Biswas , D. Bisht , Ing-Guey Jiang , Devesh P. Sariya , Kaviya Parthasarathy

The convergent migration of two planets in a gaseous disc can lead to capture in mean motion resonance (MMR). In addition, pairs of planets in or near MMRs are known to produce strong transit timing variations (TTVs). In this paper we study…

Earth and Planetary Astrophysics · Physics 2020-10-28 Jean Teyssandier , Anne-Sophie Libert

While various indirect methods are used to detect exoplanets, one of the most effective and accurate methods is the transit method, which measures the brightness of a given star for periodic dips when an exoplanet is passing in front of the…

The transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting an G-type star, were performed. Nine new transit light curves are obtained and analysed together with 21…

Hot Jupiters with close-by planetary companions are rare, with only a handful of them having been discovered so far. This could be due to their suggested dynamical histories, leading to the possible ejection of other planets. TOI-2109 b is…

Transit timing variation (TTV) is a useful tool for studying the orbital properties of transiting objects. However, few TTV studies have been done on transiting brown dwarfs (BDs) around solar-type stars. Here we study the long-term TTV of…

Earth and Planetary Astrophysics · Physics 2025-05-28 Wenqin Wang , Xinyue Ma , Zhangliang Chen , Cong Yu , Shangfei Liu , Bo Ma

We present new results for the hot Jupiters HAT-P-16b, TOI-1516b, and TOI-2046b, based on photometric observations collected using both space- and ground-based facilities. Ground-based data were collected in the 2020-2024 time span with the…

Earth and Planetary Astrophysics · Physics 2025-09-29 E. Sonbas , K. Kaplan , M. Tanriver , A. Keskin , K. S. Dhuga , A. Bulut , E. Gogus , W. Ogloza

TOI-1227 b is an 11 Myr old validated transiting planet in the middle of its contraction phase, with a current radius of 0.85 R$_J$. It orbits a low-mass pre-main sequence star (0.170 M$_\odot$, 0.56 R$_\odot$) every 27.4 days. The magnetic…

Transit timing variations (TTVs) provide a powerful means to detect and characterise additional bodies in known planetary systems, even when they do not transit their host stars. We investigate the dynamical architecture of the HD 332231…

Earth and Planetary Astrophysics · Physics 2026-04-22 Gracjan Maciejewski

Aims. Hot Jupiters are thought to belong to single-planet systems. Somewhat surprisingly, some hot Jupiters have been reported to exhibit transit timing variations (TTVs). The aim of this paper is to identify the origin of these…

Earth and Planetary Astrophysics · Physics 2015-06-05 R. Szabó , Gy. M. Szabó , G. Dálya , A. E. Simon , G. Hodosán , L. L. Kiss

We present twelve new transit light curves of the hot-Jupiter TrES-3b observed during $2012-2018$ to probe the transit timing variation (TTV). By combining the mid-transit times determined from these twelve transit data with those…

The discovery of young (<800 Myr) transiting planets has provided a new avenue to explore how planets form and evolve over their lifetimes. Mass measurements for these planets would be invaluable, but radial velocity surveys of young…

Earth and Planetary Astrophysics · Physics 2025-12-09 Ana Isabel Lopez Murillo , Andrew W. Mann , Madyson G. Barber , Andrew Vanderburg , Pa Chia Thao , Andrew W. Boyle

In this Letter we present observations of recent HAT-P-13b transits. The combined analysis of published and newly obtained transit epochs shows evidence for significant transit timing variations since the last publicly available…

Earth and Planetary Astrophysics · Physics 2015-05-27 András Pál , Krisztián Sárneczky , Gyula M. Szabó , Attila Szing , László L. Kiss , György Mezö , Zsolt Regály

From previous ground-based observations, the hot Jupiter exoplanet XO-6b was reported to exhibit apparently periodic transit timing variations (TTVs), with a semi-amplitude of 14 minutes and a period of about 450 days. These variations were…

Earth and Planetary Astrophysics · Physics 2020-11-18 Andrew R. Ridden-Harper , Jake D. Turner , Ray Jayawardhana

In this work, we present a transit timing variation analysis for 20 hot Jupiter systems, which we interpret with theoretical tidal dissipation models. For the majority of the sample, we conclude that a constant orbital period model…

The ExoEcho project is designed to study the photodynamics of exoplanets by leveraging high-precision transit timing data from ground- and space-based telescopes. Some exoplanets are experiencing orbital decay, and transit timing variation…

Earth and Planetary Astrophysics · Physics 2025-01-13 Xinyue Ma , Wenqin Wang , Zixin Zhang , Cong Yu , Dichang Chen , Jiwei Xie , Shangfei Liu , Li Zhou , Bo Ma

Variations in the timing of transiting exoplanets provide a powerful tool detecting additional planets in the system. Thus, the aim of this paper is to discuss the plausibility of transit timing variations on the Qatar-1 system by means of…

Earth and Planetary Astrophysics · Physics 2013-09-06 C. von Essen , S. Schröter , E. Agol , J. H. M. M. Schmitt

Few planetary systems have measured mutual inclinations, and even less are found to be non-coplanar. Observing the gravitational interactions between exoplanets is an effective tool to detect non-transiting companions to transiting planets.…

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