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Related papers: Six High-Precision Transits of OGLE-TR-113b

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We present photometry of HD 189733 during eight transits of its close-in giant planet, and out-of-transit photometry spanning two years. Using the transit photometry, we determine the stellar and planetary radii and the photometric…

We update the ephemerides of 16 transiting exoplanets using our ground-based observations, new TESS data, and previously published observations including those of amateur astronomers. All these light curves were modeled by making use of a…

We have confirmed the existence of the transiting super Neptune extrasolar planet HAT-P-11b. On May 1, 2009 UT the transit of HAT-P-11b was detected at the University of Arizona's 1.55m Kuiper Telescope with 1.7 millimag rms accuracy. We…

Earth and Planetary Astrophysics · Physics 2011-02-11 Jason A. Dittmann , Laird M. Close , Elizabeth M. Green , Louis J. Scuderi , Jared R. Males

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

We report twelve new transit observations of the exoplanet WASP-4b from the Transit Monitoring in the South Project (TraMoS) project. These transits are combined with all previously published transit data for this planet to provide an…

Earth and Planetary Astrophysics · Physics 2015-06-16 S. Hoyer , M. Lopez-Morales , P. Rojo , V. Nascimbeni , S. Hidalgo , N. Astudillo-Defru , F. Concha , Y. Contreras , E. Servajean , T. C. Hinse

We present new observations of the transiting system TrES-3 obtained from 2009 to 2011 at several observatories. The orbital parameters of the system were re- determined and a new linear ephemeris was calculated. The best quality light…

Solar and Stellar Astrophysics · Physics 2015-06-15 M. Vanko , G. Maciejewski , M. Jakubik , T. Krejcova , J. Budaj , T. Pribulla , J. Ohlert , St. Raetz , S. Parimucha , L. Bukowiecki

We present precise V-band photometry for the low-amplitude transit candidate star OGLE-TR-109. This is an extreme case among the transiting candidates found by the OGLE group because of the early spectral type of the star (F0V), of the low…

We present nine newly observed transits of TrES-3, taken as part of a transit timing program using the RISE instrument on the Liverpool Telescope. A Markov-Chain Monte-Carlo analysis was used to determine the planet-star radius ratio and…

Earth and Planetary Astrophysics · Physics 2009-07-22 N. P. Gibson , D. Pollacco , I. Skillen , E. K. Simpson , S. Barros , Y. C. Joshi , I. Todd , C. Benn , D. Christian , M. Hrudková , F. P. Keenan , I. A. Steele

We present the discovery by the WASP-South transit survey of three new transiting hot Jupiters, WASP-161 b, WASP-163 b and WASP-170 b. Follow-up radial velocities obtained with the Euler/CORALIE spectrograph and high-precision transit light…

Motivated by the identification of the very close-in extrasolar giant planet OGLE-TR-56b, we explore the implications of its existence on problems of tidal dissipation, planet migration, and atmospheric stability. The small orbit of…

Astrophysics · Physics 2009-11-07 Dimitar D. Sasselov

We report the discovery of MASCARA-3b, a hot Jupiter orbiting its bright (V = 8.33) late F-type host every $5.55149\pm 0.00001$ days in an almost circular orbit ($e = 0.050^{+0.020}_{-0.017}$). This is the fourth exoplanet discovered with…

We study the feasibility of observationally constraining the rotation rate of hot Jupiters, planets that are typically assumed to have been tidally locked into synchronous rotation. We use a three-dimensional General Circulation Model to…

Earth and Planetary Astrophysics · Physics 2014-07-16 E. Rauscher , E. M. R. Kempton

Many of the known hot Jupiters are formally unstable to tidal orbital decay. The only hot Jupiter for which orbital decay has been directly detected is WASP-12, for which transit timing measurements spanning more than a decade have revealed…

In this study, the transit observations of HAT-P-16b and TrES-3b exoplanets were carried out at \c{C}\"U UZAYMER Observatory with a 50 cm Ritchey Chretien type telescope. By analyzing the light curves of both exoplanets, system parameters…

Earth and Planetary Astrophysics · Physics 2021-09-15 Y. Aladağ , A. Akyüz , Ö. Bastürk , N. Aksaker , E. M. Esmer , S. Yalçınkaya

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…

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…

Orbital dynamics provide valuable insights into the evolution and diversity of exoplanetary systems. Currently, only one hot Jupiter, WASP-12b, is confirmed to have a decaying orbit. Another, WASP-4b, exhibits hints of a changing orbital…

Earth and Planetary Astrophysics · Physics 2022-05-25 Jake D. Turner , Laura Flagg , Andrew Ridden-Harper , Ray Jayawardhana

We present a comprehensive analysis of the Hubble Space Telescope observations of the atmosphere of WASP-121 b, a ultra-hot Jupiter. After reducing the transit, eclipse, and phase-curve observations with a uniform methodology and addressing…

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