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So far radial velocity (RV) measurements have discovered ~25 stars to host multiple planets. The statistics imply that many of the known hosts of transiting planets should have additional planets, yet none have been solidly detected. They…

Astrophysics · Physics 2009-11-13 Daniel C. Fabrycky

We infer dynamical masses in eight multi-planet systems using transit times measured from Kepler's complete dataset, including short-cadence data where available. Of the eighteen dynamical masses that we infer, ten pass multiple tests for…

Hot Jupiters should initially form at considerable distances from host stars and subsequently migrate towards inner regions, supported directly by transit timing variation (TTV). We report the TTV of K2-237b, using reproduced timings fitted…

Beyond Earth-like planets, moons can be habitable, too. No exomoons have been securely detected, but they could be extremely abundant. Young Jovian planets can be as hot as late M stars, with effective temperatures of up to 2000 K. Transits…

Earth and Planetary Astrophysics · Physics 2016-03-16 René Heller

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…

It is conceivable that a few thousand confirmed exoplanets initially harboured satellites similar to the moons of the Solar system or larger. Could some of them have survived over the aeons of dynamical evolution to the present day? The…

Earth and Planetary Astrophysics · Physics 2023-04-05 Valeri V. Makarov , Michael Efroimsky

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…

Many exoplanets have been found in orbits close to their host stars and thus they are subject to the effects of photo-evaporation. Previous studies have shown that a large portion of exoplanets detected by the Kepler mission have been…

Earth and Planetary Astrophysics · Physics 2016-12-14 Ming Yang , Ji-Wei Xie , Ji-Lin Zhou , Hui-Gen Liu , Hui Zhang

The exquisite photometric precision of the Kepler space telescope now puts the detection of extrasolar moons at the horizon. Here, we firstly review observational and analytical techniques that have recently been proposed to find exomoons.…

Earth and Planetary Astrophysics · Physics 2015-06-12 René Heller , Rory Barnes

Exomoons are expected to orbit gas giant exoplanets just as moons orbit solar system planets. Tidal heating is present in solar system satellites and it can heat up their interior depending on their orbital and interior properties. We aim…

Earth and Planetary Astrophysics · Physics 2023-07-12 E. Kleisioti , D. Dirkx , M. Rovira-Navarro , M. A. Kenworthy

Knowledge of an exoplanet's oblateness and obliquity would give clues about its formation and internal structure. In principle, a light curve of a transiting planet bears information about the planet's shape, but previous work has shown…

Earth and Planetary Astrophysics · Physics 2015-05-18 Joshua A. Carter , Joshua N. Winn

There are excesses of sub-Neptunes just wide of period commensurabilities like the 3:2 and 2:1, and corresponding deficits narrow of them. Any theory that explains this period ratio structure must also explain the strong transit timing…

Earth and Planetary Astrophysics · Physics 2023-03-29 Nick Choksi , Eugene Chiang

One of the primary surprises of exoplanet detections has been the discovery of compact planetary systems, whereby numerous planets reside within ~0.5 AU of the host star. Many of these kinds of systems have been discovered in recent years,…

Earth and Planetary Astrophysics · Physics 2017-04-19 Stephen R. Kane

Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different…

We study the transit timings of 10 exoplanets in order to investigate potential Transit Timing Variations (TTVs) in them. We model their available ground-based light curves, some presented here and others taken from the literature, and…

Maneuvering a spacecraft in the cislunar space is a complex problem, since it is highly perturbed by the gravitational influence of both the Earth and the Moon, and possibly also the Sun. Trajectories minimizing the needed fuel are…

Instrumentation and Methods for Astrophysics · Physics 2024-04-01 A. K. de Almeida , T. Vaillant , V. M. de Oliveira , D. Barbosa , D. Maia , S. Aljbaae , B. Coelho , M. Bergano , J. Pandeirada , A. F. B. A. Prado , A. Guerman , A. C. M. Correia

We present an analysis of the transit timing variations (TTVs) in the multi-transiting planetary system around Kepler-51 (KOI-620). This system consists of two confirmed transiting planets, Kepler-51b ($P_{\rm b} = 45.2\,\mathrm{days}$) and…

Earth and Planetary Astrophysics · Physics 2014-02-17 Kento Masuda

There are now thousands of single-planet systems observed to exhibit transit timing variations (TTVs), yet we largely lack any interpretation of the implied masses responsible for these perturbations. Even when assuming these TTVs are…

Earth and Planetary Astrophysics · Physics 2026-02-04 Daniel A. Yahalomi , David Kipping

Transit photometry of the exoplanet candidate Kepler-1625b has recently been interpreted to show hints of a moon. We aim to clarify whether the exomoon-like signal is really caused by a large object in orbit around Kepler-1625b. We explore…

Earth and Planetary Astrophysics · Physics 2018-09-12 Kai Rodenbeck , René Heller , Michael Hippke , Laurent Gizon

Context: With no conclusive detection to date, the search for exomoons, satellites of planets orbiting other stars, remains a formidable challenge. Detecting these objects, compiling a population-level sample and constraining their…

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