Results 81 to 90 of about 115,932 (268)

Chaos in the Kepler system [PDF]

Classical and Quantum Gravity, 1999
The long-term dynamical evolution of a Keplerian binary orbit due to the emission and absorption of gravitational radiation is investigated. This work extends our previous results on transient chaos in the planar case to the three dimensional Kepler system.
Chicone, Carmen Charles, Mashhoon, Bahram, Retzloff, David G.   +2 more
openaire   +3 more sources

The third transit of snow-line exoplanet Kepler-421b [PDF]

, 2016
The Kepler Mission has uncovered a handful of long-period transiting exoplanets that orbit from the cold outer reaches of their systems, despite their low transit probabilities.
Dalba, P. A., Muirhead, P. S.
core  

Analytic orbit propagation for transiting circumbinary planets

, 2015
The herein presented analytical framework fully describes the motion of coplanar systems consisting of a stellar binary and a planet orbiting both stars on orbital as well as secular timescales.
Eggl, Siegfried, Georgakarakos, Nikolaos
core   +2 more sources

Asymmetric Organocatalytic Synthesis of Sulfone‐Containing (Dihydro)pyrans via Formal (4+2)‐Cycloadditions of Allenylsulfones or Propargylsulfones and Michael Acceptors

ChemCatChem, Accepted Article.
The activation of electron poor allenes with Lewis base catalysts allows for unique transformations and chiral isochalcogenoureas were recently introduced as powerful catalysts for allenoate‐based (4+2)‐cycloadditions. We herein now report the use of these catalysts for the activation and control of allenylsulfones and propargylsulfones for asymmetric (
Mario Hofer, Markus Himmelsbach, Uwe Monkowius, Mario Waser   +3 more
wiley   +1 more source

Utilizing Photometry from Multiple Sources to Mitigate Stellar Variability in Precise Radial Velocities: A Case Study of Kepler-21

The Astronomical Journal
We present a new analysis of Kepler-21, the brightest ( V = 8.5) Kepler system with a known transiting exoplanet, Kepler-21 b. Kepler-21 b is a radius valley planet ( R = 1.6 ± 0.2 R _⊕ ) with an Earth-like composition (8.38 ± 1.62 g cm ^–3 ), though its
Corey Beard, Paul Robertson, Mark R. Giovinazzi, Joseph M. Akana Murphy, Eric B. Ford, Samuel Halverson, Te Han, Rae Holcomb, Jack Lubin, Rafael Luque, Pranav Premnath, Chad F. Bender, Cullen H. Blake, Qian Gong, Howard Isaacson, Shubham Kanodia, Dan Li, Andrea S. J. Lin, Sarah E. Logsdon, Emily Lubar, Michael W. McElwain, Andrew Monson, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Gudmundur Stefansson, Ryan C. Terrien, Jason T. Wright   +28 more
doaj   +1 more source

Kepler-16b: safe in a resonance cell

, 2013
The planet Kepler-16b is known to follow a circumbinary orbit around a system of two main-sequence stars. We construct stability diagrams in the "pericentric distance - eccentricity" plane, which show that Kepler-16b is in a hazardous vicinity to the ...
Chirikov, Chirikov, Deller, Elena A. Popova, Gladman, Hairer, Holman, Ivan I. Shevchenko, Melnikov, Meschiari, Morbidelli, Moriwaki, Mudryk, Murray, Orosz, Paardekooper, Popova, Shevchenko, von Bremen   +18 more
core   +1 more source

Kepler Transit Depths Contaminated by a Phantom Star [PDF]

, 2016
We present ground-based observations from the Discovery Channel Telescope (DCT) of three transits of Kepler-445c---a supposed super-Earth exoplanet with properties resembling GJ 1214b---and demonstrate that the transit depth is approximately 50 percent ...
Croll, Bryce, Dalba, Paul A., Kempton, Eliza M. -R., Muirhead, Philip S.   +3 more
core   +2 more sources

The Discovery of Kepler-16b [PDF]

New Astronomy Reviews 84, 101515 (2019), 2019
We describe the Discovery of Kepler-16b, the first widely accepted detection of a circumbinary planet.
arxiv   +1 more source

PEMBELAJARAN FISIKA MENGGUNAKAN PEMODELAN UNTUK MENINGKATKAN PEMAHAMAN KONSEP PADA MATERI HUKUM NEWTON GRAVITASI DAN HUKUM KEPLER

Edu Sains: Jurnal Pendidikan Sains dan Matematika, 2019
Penelitian ini bertujuan untuk mengetahui peningkatan pemahaman konsep peserta didik melalui pembelajaran dengan pemodelan. Pembelajaran dengan pemodelan menitikberatkan pada model untuk menjelaskan fenomena gaya gravitasi, medan gravitasi, hukum Kepler,
Mimi Rohazal Yaumi, Sutopo Sutopo, Parno Parno   +2 more
doaj   +1 more source

Overcoming intra-molecular repulsions in PEDTT by sulphate counter-ion

Science and Technology of Advanced Materials, 2021
We set out to demonstrate the development of a highly conductive polymer based on poly-(3,4-ethylenedithia thiophene) (PEDTT), PEDOTs structural analogue historically notorious for structural disorder and limited conductivities.
Dominik Farka, Theresia Greunz, Cigdem Yumusak, Christoph Cobet, Cezarina Cela Mardare, David Stifter, Achim Walter Hassel, Markus C. Scharber, Niyazi Serdar Sariciftci   +8 more
doaj   +1 more source