منابع مشابه
Modes of Pulsation in the Eros Database
in Variable stars and the astrophysical return of microlensing surveys, ed R. Ferlet, J.P.Maillard, ´ editionsfrontì eres. Abstract Using CCD photometry obtained by the EROS collaboration in 1991-1993, we have discovered an LMC variable star with a light curve that is oscillating with a mean period of ∼ 14 days and an amplitude of ∼ 0.3 mag. The oscillations appear with irregular amplitude vari...
متن کاملPulsation modes for increasingly relativistic polytropes
We present the results of a numerical study of the fluid f , p and the gravitational w modes for increasingly relativistic nonrotating polytropes. The results for f and w-modes are in good agreement with previous data for uniform density stars, which supports an understanding of the nature of the gravitational wave modes based on the uniform density data. We show that the p-modes can become ext...
متن کاملPhase Lags and Pulsation Modes of Classical Cepheids
The first-order phase lag between light and velocity is calculated from Fourier decompositions of the variations of 12 classical Cepheids. The phase lags have a narrow range, with maximum expansion velocity always retarded with respect to maximum light. The average value of the first-order phase lag is found to be approximately -0.3, close to the theoretical value obtained from the models of Si...
متن کاملLocalized transversal-rotational modes in linear chains of equal masses.
The propagation and localization of transversal-rotational waves in a two-dimensional granular chain of equal masses are analyzed in this study. The masses are infinitely long cylinders possessing one translational and one rotational degree of freedom. Two dispersive propagating modes are predicted in this granular crystal. By considering the semi-infinite chain with a boundary condition applie...
متن کاملSolar p-modes: possible source of excitation and frequency splitting
A new possible source of solar 5-minute oscillation is supposed. Weak periodic differential rotation (see Zaqarashvili 1997, hereafter paper I) generates exponentially growing slow magnetosonic waves with period of 22 yr in the radiative interior. The waves propagating with ±450 angles to the radial direction have maximal growth rates. The ideal MHD equations for slow and fast waves are linearl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2010
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/721/2/1900