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Showing 1 to 20 of 62 for “"Kepler"”.
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Kepler törvények
… és az analízis eszközeinek felhasználásával. Kepler törvényeinek alkalmazása. Alternatív megoldások keresése polárszögfüggvényekre.
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Métodos iterativos aplicados a la ecuación de Kepler
… exciting areas such as astronomy, consisting of Kepler's equation, and numerical analysis, represented by iterative methods of solving equations. We investigate the behavior of a point methods (such as Newton's method, Halley's method, Chebyshev's method, super-Halley's method and Danby's method) …
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Investigating the A-type stars using Kepler data
… might be measured with Fourier transforms of Kepler data, potentially removing the requirement of spectroscopic observations to acquire similar information. Angular rotational velocities reach their maximum at about A5, but slowly rotating A stars are also seen and these tend to be chemically …
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A catalog of new eclipsing binaries in the Kepler database
… stars discovered in the publicly available Kepler database, none of which were included in previous such catalogs published by the Kepler science team. A brief review of other binary star catalogs is given, including the Prs̆a et al. catalog on which we are expanding. We detail the means by …
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The behavior of O - C curves for contact binaries in the Kepler catalog
… of eclipses for contact binary systems in the Kepler catalog. Observed eclipse times were determined from Kepler long-cadence light curves and "observed minus calculated" (0 - C) curves were generated for both primary and secondary eclipses of the contact binary systems. We found the 0 - C …
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Identifying binary central stars of planetary nebulae with Kepler K2 campaign 11 photometric data
… light curves for 140 PNe targets from the Kepler K2 campaign 11 field. Of these 140 targets, 29 appeared to show periodicity in their light curves, all of which had period under two weeks, for a close binary fraction of 21%; furthermore, 25 out of 29 (86%) detected periods were between two …
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Understanding Ancient Math Through Kepler: A Few Geometric Ideas from The Harmony of the World
… A recently republished work by Johannes Kepler contains examples using polygons to illustrate these species. In addition, figures having these quantities in their construction form solid shapes (polyhedra) having origins though Platonic philosophy and Archimedean works. Kepler gives two …
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Modelling physics teachers' pedagogical content knowledge through purposeful relationships between semiotic registers: KEPLER - "Knowledge Environment for Physics Learning and Evaluation of Relationships"
Constructivism and considers that learning is greatly influenced by collaboration between active learners. Although learning has this social dimension, the individual learner builds a personalised version of relevant concepts. Ideas in science are not communicated solely through written and spoken …
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K-Star rapid rotators and the detection of relatively young multiple K-Star systems
In this thesis, I searched through the Kepler light curves of 14,440 K-star targets for evidence of periodicities that indicate rapid stellar rotation. Many Kepler M, K, and G stars show modulations in flux due to rotating star spots, and these have been previously investigated by a number of …
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Amplitude modulation and energy conservation of pulsation modes in delta Scuti stars
… Sct stars observed continuously for 4 yr by the Kepler Space Tele-scope. A statistical search for amplitude modu-lation of pulsation modes is carried out and it is shown that 61.3 per cent of the 983 δ Sct stars exhibit significant amplitude modulation in at least a single pulsation mode, and …
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On the N-body Problem
… binary collision, linear stability of Kepler orbits, and index theory for symplectic path are studied. The history of their study is summarized in section 1. Section 2 deals with the following problem: given a collinear configuration of 4 bodies, under what conditions is it possible to …
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Heartbeat Stars and the Ringing of Tidal Pulsations
… precision photometry from satellites such as the Kepler satellite, a whole new collection of interesting astronomical features and objects has been revealed: heartbeat stars are prime example of this. Heartbeat stars are eccentric ellipsoidal variables that undergo strong tidal interactions at …
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A KAM theorem for the spatial lunar problem
… perturbation of the maximally superintegrable Kepler Hamiltonian K. To analyze the dynamics of the given three-degree-of-freedom system we normalize it, that is we approximate it by a simplified system. Using Kolmogorov-Arnol'd-Moser (KAM) Theory we show that the invariant 3-tori of the …
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Planets around cool stars: a spectroscopic and photometric study of M dwarfs and their planets
… that the bright, late-type stars targeted by the Kepler spacecraft are predominately misclassified or unclassified giant stars. The level of giant star contamination has a significant impact on the metallicity distribution of the Kepler M star sample as well as the calculated planet occurrence. I …
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Mapping exoplanet clouds and albedo from phase curves and spectra
… curve. We then apply the models to the exoplanet Kepler-7b and consider the effect of varying cloud species, sedimentation efficiency, particle size, and cloud altitude. In the context of Kepler Space Telescope observations, we show that the cloud compositions and spatial distributions can be …
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Investigations of close-in exoplanets : starspot transits, and ultra-short period planets
… the shortest-period planets discovered with the Kepler space telescope. In this survey I take a different approach to discover ultra-short period transiting exoplanets. A simple Fourier transform is obtained for every Kepler star, and planets are detected by interpreting the amplitudes and …
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Adequação da escala de Wilson & Vlosky para mensuração de marketing de relacionamento no mercado de bens de capital : um estudo exploratório
… foi aplicada a uma amostra de clientes da Kepler Weber, tradicional fornecedora brasileira de sistemas de armazenagem para VI grãos vegetais. As respostas obtidas foram, na seqüência, verificadas por meios estatísticos. Estas verificações indicaram algumas modificações na escala proposta …
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Frequencies of Bound Geodesics, Angle of Deflection For Null Geodesics In Kerr Space-Time, and Gravitational Anomalies In Gravastars.
<p>The motion of a particle in the Kepler problem is characterized by a single frequency, the Kepler frequency. This means that in spherical coordinates radial, azimuthal and polar angles all have the same frequency and there is no precession. Einstein showed that in General Relativity, for the …
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Planetesimal Belts in Misaligned Wide Stellar Binaries
… component of a wide binary star system in the Kepler field with deep, irregular and aperiodic dips in its light-curve, a Monte Carlo model of planetesimal belts in wide stellar binaries was created. It found that the occurrence rate of KIC 8462852-like observations in the Kepler field is 10⁻⁸ …
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