Physical parameters for subdwarf B stars with composite spectra R. Aznar Cuadrado, C.S. Je ery Armagh Observatory, College Hill, Armagh BT61 9DG, N. Ireland rea@star.arm.ac.uk, csj@star.arm.ac.uk Abstract Intermediate-resolution spectra have been obtained for a number of subdwarf B stars having both single and com- posite spectra. Physical parameters have been determined for the sdB stars and, in composite-spectrum systems, their cool companions. ... 2001). ... For all composite systems, y  0:01. ...

... Bad Astronomy . ... Mad Science . ... Universe Today . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... type 1a supernovae seem most useful . ... This is a bright, massive star that explodes after fusing all the light elements in its core. ... That means we can calculate how far away it is. ... This is exactly what we are trying to do with these supernovae; look far enough away that any deviations from flatness of the Universe can be seen. ... Phil Plait . ...

Тема : Хвостатые гостьи 16 (коррекции орбиты) .. Показать сообщение отдельно . ... Сообщений: 19,465 . Коррекция орбиты некоторых периодических комет от 9 июля 2014 года MPEC 2014-N57 .. ... Отправить личное сообщение для Silvester . Найти еще сообщения от Silvester . ...

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

... Публикации и издания Публикации профессорско-преподавательского состава СГАУ Издания проф. Сосниной Т.Н. Biosphere: Analysis of Value Parameters . ... Besides, the ways of saving the use value and value properties of biosphere are analyzed. The expediency of transformation of two-criterion theory of value into the three- criterion theory of the balance of value, where the ecologic component performs the function of the key criterion has been founded. ... BIOSPHERE USE VALUE OF THE PRODUCT: MAIN . ...

... SphereParams Struct Reference . ... SphereParams (const float radius) . ... Definition at line 50 of file StelGeometryBuilder.hpp . ... Definition at line 103 of file StelGeometryBuilder.hpp . ... Definition at line 120 of file StelGeometryBuilder.hpp . ... Definition at line 112 of file StelGeometryBuilder.hpp . ... Definition at line 118 of file StelGeometryBuilder.hpp . ... Definition at line 110 of file StelGeometryBuilder.hpp . ... Definition at line 114 of file StelGeometryBuilder.hpp . ...

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

... Guider functions . ... Guide Sensor Performance . ... Guide Sensor Sky Coverage/ Star Availability . Guide Star Selection Criteria . ... Guide fiber organization and reach at plug plate . ... Plug plate holes for guide stars are identical to those for science FO . ... FOV for each of 9 guide stars is 7.4 arcsec dia. (0.45 mm FO, Sumitomo IGN-05/10) . ... Selected guide stars must have no neighbor stars within TBD (5 arcsec) radius that have a brightness within TBD (5 mag.) of guide stars . ...

... Space flight . ... Zero Gravity . ... Characteristics of a Complex Flight: . ... Characteristics of the Reduced Gravity (Lunar Gravitation): . ... Characteristics of the Reduced Gravity (Martian Gravitation): . ... Services / Zero Gravity: General description Technical description Flight parameters Photo gallery Price . ...

... 18-Jan-2010 17:22 . ... Apache/2.2.3 (CentOS) Server at www.wdcb.ru Port 80 ...

... RC0302+0455 . RC0308+0454 . ... RC0355+0449 . Radio source parameters . ... R.A.(B1950) Dec.( B1950) Freq. ... Parameters of optical candidates for identification . R.A.(J2000) Dec.( J2000) R.A.(B1950) Dec.( B1950) Magn. ... J2000) angle fwhm (X:Y) 03:08:33.98 +04:54:10.5 . ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

... The zeta function of the classical monodromy transformation of the germ $f$ is a topological invariant of it. Let us consider a parametrization (uniformization) of the curve $(C,0)$. The order of a function on $(C,0)$ as a function in the uniformization parameter defines a decreasing filtration on the ring of functions on the curve singularity. It appears that the Poincare series of this filtration (considered as a rational function) coincides with the zeta function mentioned above. ...

... Parameters of the Moon-perturbed orbit . ... From orbits consistent with this limitation and with the date of the launch October 1, 2000 as an example, an orbit was selected with apogee directed to the North Galactic pole at the begining and rotation of orbit plane was maximized. The initial state vector is given in the inertial coordinate system in epoch J2000.0. ... The orbit has initial perigee radius Rp=7000.0 km, initial apogee radius Ra=343000.0 km and initial period T=8.453 days. ...

External influences on spin parameters for INTERBALL - AP . ... The main interest is that almost all kind of external influences to parameters of motion (eclipse, normalization, ROS) are presented in the one time interval. Three upper panels illustrate the spin velocity, the angle between kinetic moment and sun direction, and the nutation.All external events are represented on the lowest panel as blue, green and yellow columns. ...

... The operators will be explained as they are used. The general notion to keep in mind is that any combination of these operators results in a 2- D affine coordinate transformation in the TF plane, which may be represented using the homogeneous coordinates often used in computer graphicsfoley. ... S _t_c,f_c = g_t_c,f_c,(_t) | ... We denote a time shift to the position , with an operator that has a multiplicative law of composition : (Table 1). ... Note that these two operators do not commute. ...

From XEphem running the Soft03Cmt database of 20121002, for the date and time of the observation: RA: 08:16:04.25 Dec: 27:48:13 2012-09-30 UT 09:45 UTC Measured: RA: 08:16:04.4 Dec: 27:48:12.9 Header listing for HDU #1: SIMPLE = T / This is a FITS file BITPIX = -32 / NAXIS = 2 / NAXIS1 = 4341 / NUMBER OF ELEMENTS ALONG THIS AXIS NAXIS2 = 4355 / NUMBER OF ELEMENTS ALONG THIS AXIS EXTEND = T / This file may contain ...