... Гладкие многообразия. Гладкие векторные локально-тривиальные расслоения. ... Джет локального сечения в точке. ... Многообразие и расслоение конечных джетов. ... Канонические координаты в многообразии джетов, ассоциированные с локальной тривиализацией расслоения. Размерность многообразий джетов. ... Интегральные плоскости. Представление точек в многообразия джетов с помощью интегральных плоскостей. ... Плоскость Картана как линейная оболочка множества интегральных плоскостей в точке. ...

... The most precisely determined characteristic for accreting neutron stars (NS's) is their period. ... Period changes show fluctuations. ... Some applications of stochastic processes in astrophysics especially in accreting systems were discussed in Lipunov (1987),Hoshino Takeshima (1993) and Lipunov (1992).In Hoshino Takeshima (1993) the authors, using simple models of MHD turbulence, try to explain aperiodic changes in X-ray luminosity of X-ray pulsars. ... Here, -constant angular momentum. ...

We present an extinction analysis of sight lines selected from all public FUSE observations of Galactic O and B stars. Over 90% of Milky Way extinction curves sampled from IR through UV wavelengths (UV coverage provided by IUE) conform to the CCM family of curves based on R(V), a single parameter linked to grain size (Cardelli, Clayton, Mathis 1989, ApJ, 345, 245; Valencic, Clayton, Gordon 2004, ApJ, 616, 912). ... ADS ] . ADS Citation Query . ...

... They were determined as a result of orbit improving on the base of all kinds of optical observations available in the catalog of observations of the Minor Planet Center on March 16, 2014 (radar observations have not been used at this stage). ... As the MPC orbits do not all were improved simultaneously with EMP orbits, only 383866 sets of elements were used for data comparison (for selected sets of elements process of improvement had started with the use of the same observations). ...

... Keywords: Proper Motions, Schmidt Plates, Astrometry, Guide Star Catalog, Palomar Sky Survey . In this paper we describe a program of determining proper motions from digitized scans of 1950's-era Palomar Sky Survey (POSS) Schmidt Plates and 1980's-era Palomar Oschin Schmidt `Quick V' plates that were taken for the Hubble Space Telescope ( HST ) Guide Star Catalogue. ... Arrows indicate the magnitude and direction of the proper motion for the stars. ...

Term mixture regarding solar chemical composition refers to relative abundances of heavy elements. Abundances of hydrogen and helium cannot be determined reliably from observations, therefore concentration of these elements are not taken from observational data. ... Table contains only elements which are abundant enough to be included into opacity and equation of state computations. ... First "low-Z abundances" to be published were AGS05. ... 5.5 . ... 6.22 AG89 : Anders E., Grevesse N. 1989. ...

Next: Determining Gains and Bandpass Up: Calibration, the ATCA, and Previous: Calibration of Data with . ... mfcal : This determines antenna gains, band passes and delays given a point-source calibrator. ... The polarisation properties of the calibrator can be determined as part of the solution process. ... Next: Determining Gains and Bandpass Up: Calibration, the ATCA, and Previous: Calibration of Data with Miriad manager . ...

... Горизонтальная система координат . ... Положение небесных светил на небесной сфере однозначно определяется двумя сферическими координатами. Сферические координаты точки представляют собой дуги больших кругов сферы, выраженные в градусной или часовой мере. ... Координаты звезд в горизонтальной и первой экваториальной системах координат изменяются из-за суточного вращения Земли, так как в них начало отсчета привязано к вращающейся Земле (точка юга S и точка Q лежат на небесном меридиане). ...

... Based on the measurements of the Stokes parameters in the continuum and in the broad 0.6563 nm hydrogen emission line obtained with the 6-m telescope for the Seyfert galaxy Mkn 6, secular variability of the hydrogen line profile polarization was discovered; a time lag of less than 2 days between the continuum flux and the polarized continuum emission was determined which corresponds to the size of the region where the polarization of the continuum occurs, less than 0.001 pc. ...

Institute of Applied Astronomy Russian Academy of Sciences Method of Determining the Orbits of the Small Bodies in the Solar System Based on an Exhaustive Search of Orbital Planes Dmitrii Vavilov, Yurii Medvedev Introduction to the problem: Let we have n 3 positional observations of a body: points in time ( = 1, ) , right ascensions , and declinations . ... Determination of the orbit using the Gauss method of determining orbital elements based on two heliocentric positions and points in time. ...

Next: *imcnts* - Radial Profile Up: Radial Profiles and Projections Previous: *tabplot* - Displaying a . ... Input a spatially blocked and energy filtered image from above and use with the background determined from the broad-band background map. cl xray xr xspatial xs imcnts addbkg=no # Do not add the background error Source image file : xdata$snr.qp Source region descripter: c 503 513 50 p 503 513 0 360 n=10 # circular region centered on point ...

... Format of the orbital elements | Estimation of the extrapolation errors | Version 1" of the orbital elements collection, determined by KIAM during flight and used for operations planning . Version 2" of the of the orbital elements collection, modified by IKI during flight and recommended for the orbital calculations during scientific data processing . ... Three kinds of the INTERBALL Auroral probe (IB_AUR) orbital elements' collections are presented here. ... IKI RAN | SSC IKI RAN | ...

... Binary orbits in the acceleration/period plane . Circular Orbits . ... We first present the equations for the period and acceleration of a pulsar in an eccentric binary system as a function of its position in the orbit. ... In Freire, Kramer & Lyne (2001) (from where most of this text and following equations are taken), we describe in more detail how circular binary orbits can be determined from the observed periods and accelerations of the pulsar. ... where is the orbital period of the binary. ...

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Next: Discussion Up: The Second EGRET Catalog Previous: First Catalog Sources . In the first EGRET catalog, upper limits were given for selected objects not detected during the Phase 1 all-sky survey. These upper limits are determined using the likelihood calculation and depend on the EGRET exposure to a given direction, the contribution of the diffuse gamma radiation, and the proximity and strength of detected sources. ...

Next: Ground calibration Up: RGS_EFFAREACORR Previous: Purpose Contents . Effective-area correction factors and rectification factors are tabulated against energy in the EFFAREACORR and RECTIFICATION extensions, repsectively. The relatively small number of elements in the tabulation compared with the number of RGS spectra elements has been determined by the smoothness of the functions concerned. ... Michael Smith 2011-09-20 ...

Next: DIRECT MASSES FOR BXCIR Up: EXTREME HELIUM STARS: PULSATION Previous: PULSATION PROPERTIES . As already indicated, V652Her is an important EHe star because its relatively short pulsation period and large amplitude pulsations allow its overall dimensions to be determined with high precision. ... Saio & Nomoto (1998) made the first successful models for the merger of two carbon-oxygen white dwarfs, and prompted Saio & Jeffery (2000) to attempt models for the merger of two helium white dwarfs. ...

The points proposed to be analogous to ones for the 4 th , 5 th , 6 th , 7 th , 8 th , 9 th and 10 th Asian-Pacific Astronomy Olympiads . ... National Astronomy Olympic Committees and interested organizations are welcome to ask more about the 11 th APAO and in 2015 may form the teams for the 20 th IAO as well as for the 11 th APAO. ... The Olympiad will be held on November 13-22, 2015. Dr. Michael G. Gavrilov, Founding Chairman and Coordinator of the Asian-Pacific Astronomy Olympiad (APAO) . ...

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...