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Transit Timing Variations (TTVs) can provide useful information for systems observed by transit, by putting constraints on the masses and eccentricities of the observed planets, or even constrain the existence of non-transiting companions.…

地球与行星天体物理 · 物理学 2022-06-08 A. Leleu , J. -B. Delisle , R. Mardling , S. Udry , G. Chatel , Y. Alibert , P. Eggenberger

Exoplanet Transit Timing Variations (TTVs) caused by gravitational forces between planets can be used to determine planetary masses and orbital parameters. Most of the observed TTVs are small and sinusoidal in time, leading to degeneracies…

地球与行星天体物理 · 物理学 2021-03-31 Yan Liang , Jakob Robnik , Uros Seljak

If a transiting exoplanet has a moon, that moon could be detected directly from the transit it produces itself, or indirectly via the transit timing variations it produces in its parent planet. There is a range of parameter space where the…

地球与行星天体物理 · 物理学 2021-01-01 Chris Fox , Paul Wiegert

We conduct a uniform analysis of the transit timing variations (TTVs) of 145 planets from 55 Kepler multiplanet systems to infer planet masses and eccentricities. Eighty of these planets do not have previously reported mass and eccentricity…

地球与行星天体物理 · 物理学 2017-06-28 Sam Hadden , Yoram Lithwick

Transiting exoplanetary systems are surpassingly important among the planetary systems since they provide the widest spectrum of information for both the planet and the host star. If a transiting planet is on an eccentric orbit, the…

天体物理学 · 物理学 2009-11-13 András Pál , Bence Kocsis

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…

Following on from Paper I in our series (Xie 2013), we report the confirmation by Transit Timing Variations (TTVs) of a further 30 planets in 15 multiple planet systems, using the publicly available Kepler light curves (Q0-Q16). All of…

地球与行星天体物理 · 物理学 2015-06-17 Ji-Wei Xie

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…

In this paper, the detectability of habitable exomoons orbiting around giant planets in M-dwarf systems using Transit Timing Variations (TTVs) and Transit Timing Durations (TDVs) with Kepler-class photometry is investigated. Light curves of…

地球与行星天体物理 · 物理学 2015-06-15 Supachai Awiphan , Eamonn Kerins

In the last decade, over a million stars were monitored to detect transiting planets. Manual interpretation of potential exoplanet candidates is labor intensive and subject to human error, the results of which are difficult to quantify.…

天体物理仪器与方法 · 物理学 2017-12-20 Kyle A. Pearson , Leon Palafox , Caitlin A. Griffith

We identify a set of planetary systems observed by Kepler that merit transit timing variation (TTV) analysis given the orbital periods of transiting planets, the uncertainties for their transit times and the number of transits observed…

地球与行星天体物理 · 物理学 2021-05-31 Daniel Jontof-Hutter , Angie Wolfgang , Eric B. Ford , Jack J. Lissauer , Daniel C. Fabrycky , Jason F. Rowe

Some transiting planets discovered by the Kepler mission display transit timing variations (TTVs) induced by stellar spots that rotate on the visible hemisphere of their parent stars. An induced TTV can be observed when a planet crosses a…

太阳与恒星天体物理 · 物理学 2015-06-22 Tsevi Mazeh , Tomer Holczer , Avi Shporer

A transiting planet exhibits sinusoidal transit-time-variations (TTVs) if perturbed by a companion near a mean-motion-resonance (MMR). We search for sinusoidal TTVs in more than 2600 Kepler candidates, using the publicly available Kepler…

地球与行星天体物理 · 物理学 2015-06-16 Ji-Wei Xie , Yanqin Wu , Yoram Lithwick

The Kepler Space Telescope has discovered thousands of planets via the transit method. The transit timing variations of these planets allows us not only to infer the existence of other planets, transiting or not, but to characterize a…

地球与行星天体物理 · 物理学 2018-10-24 Chris Fox , Paul Wiegert

The transit method allows the detection and characterization of planetary systems by analyzing stellar light curves. Convolutional neural networks appear to offer a viable solution for automating these analyses. In this research, two 1D…

The Transit Timing Variation (TTV) technique is a powerful dynamical tool to measure exoplanetary masses by analysing transit light curves. We assessed the transit timing performances of the Ariel Fine Guidance Sensors (FGS1/2) based on the…

地球与行星天体物理 · 物理学 2021-04-28 L. Borsato , V. Nascimbeni , G. Piotto , G. Szabó

We determined new linear ephemerides of transiting exoplanets using long-cadence de-trended data from quarters Q1 to Q17 of Kepler mission. We analysed TTV diagrams of 2098 extrasolar planets. The TTVs of 121 objects were excluded (because…

地球与行星天体物理 · 物理学 2019-02-27 Pavol Gajdoš , Martin Vaňko , Štefan Parimucha

We present the results of an extensive study of the detectability of Earth-sized planets and super-Earths in the habitable zones of cool and low-mass stars using transit timing variation method. We have considered a system consisting of a…

地球与行星天体物理 · 物理学 2015-05-28 Nader Haghighipour , Sabrina Kirste

Nontransiting planets can reveal themselves through transit timing variations (TTVs), but inferring the properties of the perturbing planet is a highly degenerate inverse problem. We present a systematic reassessment of all 12 published…

地球与行星天体物理 · 物理学 2026-05-11 Caleb Lammers , Joshua N. Winn

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…