... The width of hydrogen lines is known to depend on the pressure in the photosphere, and then on the luminosity and effective temperature of the star. We have studied this dependence using the spectra of normal B stars from the databases by Jacoby et al., ... The resolution of Jacoby spectra (4.5А) coincides with the resolution of our BTA/UAGS spectra (4.4A). ... Dependence of full width FWZI of hydrogen lines on star spectral type and luminosity class. ...

Constraints on the variation of the fine structure constant from recent CMB measurements Graca Rocha Cavendish Astrophysics, University of Cambridge October 22, 2003 Recent CMB experiments such as Boomerang, MAXIMA, DASI, CBI, VSA among others and most recently WMAP seem to validate, apar t some intriguing discrepancies, the so-called concordance model of cosmology. ... DASI and WMAP detected the polarization of the CMB via the temperature polarization (scalar E-mode) cross power-spectrum (TE). ...

... Among these objects, the newly discovered Kuiper Belt Objects (KBO's) outside the orbit of planet Neptune (also known as Trans-Neptunian Objects) are of particular interest, but the meeting was also concerned with distant comets and some of the small moons of the outer planets. ... The Kuiper Belt is a zone outside the orbits of Neptune and Pluto in which icy solar system objects were expected to be present; the first was found in 1992. ... ESO Press Photo 41/98 . ... Send comments to <ips@eso.org> ...

... This file table3 82 660 Observed wavelengths, laboratory values and identifications -------------------------------------------------------------------------------- Byte-by-byte Description ... Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- SpOrd Spectrum order 5- 12 F8.3 0.1nm SolLam Wavelength determination of all solar and telluric lines measurable on the ... Note (6): J: Junkes et al., ...

The monitoring of the optics quality of DIMM instrument V. Kornilov, B. Safonov May 24, 2010 1 Intro duction A quantitative theory of measurement of optical turbulence (OT) with Differential Image Motion Monitor (DIMM) is based on certain priori assumptions [1]. ... Bottom: behavior of the instrumental Strehl's number for the left (triangle to the left) and right (triangle to the right) DIMM images during the period of measurement the maintenance of an additional correction factor seems superfluous. ...

... A. M. Neminsky, P. N. Nikolaev, and D. V. Shovkun . ... The temperature dependence of the magnetic field penetration depth lambda ( T ) is determined down to 0.2 T c by the ac-susceptibility measurements on the Rb 3 C 60 fine powder with small, about 1 K, variation in the grains' superconducting transition temperatures. The lambda ( T ) temperature dependence is exponential at low temperatures, which allows us to determine the energy gap Delta 0 =1.7 k B T c . ...

ON THE IMPACT OF THE GALACTIC ABERRATION ON VLBI-DERIVED PRECESSION MODEL Z.M. MALKIN Pulkovo Observatory Pulkovskoe Ch. ... Corrections to adopted precession rate are usually computed from the linear trends in long-term time series of celestial pole offset (CPO), which are the differences between the measured and the theoretical coordinates of the celestial pole. ... CONCLUSIONS We have estimated the impact of GA on parameters of precession-nutation model derived from VLBI observations. ...

. Russian Version [ MS-Win ] . [ News ] . [ Satellite data ] . [ SMIS ] . [ ] . The program is intended for spectral and correlation analysis of satellite images. It contains an large set of spectral and spatial filters. It may be applied for interpolation and data analysis in areas with incomplete information. It allows for approximation of spectrum and correlation functions. Price . Back to SMIS Home Page .

... Total expanded uncertainty at E = 8.35 eV is ? ... 0.21 7.54 -0.14 ? ...

... 2006: . The distributions of radial ages and chemical compositions of the stellar population for several elliptical galaxies were measured from the BTA observations down to the record (to date) distances from the nucleus. ... Photometric distances were measured and peculiar radial velocities were determined for 3000 spiral galaxies from the 2MFGC catalog, compiled at the SAO RAS based on the 2MASS infrared sky survey. ... Archive . ...

Programs to generate color spectra ================================== These programs were developed to produce realistic color spectra from digital data. ... The distribution here contains the original source code for colorspec and solar in C, and a version of solar written in Fortran. ... It will produce a color spectrum of any digital spectrum. ... The 800x50 image solarflux.ppm was generated by colorspec and the file fluxatlas.dat, a reformatted NSO Solar Flux Atlas in the data directory. ...

... 50 Greatest Mysteries . ... Hubble shows Jupiterт??s Great Red Spot is smaller than ever measured . ... GREAT RED SPOT . Jupiter s trademark Great Red Spot a swirling anti-cyclonic storm larger than Earth has shrunk to its smallest size ever measured. According to Amy Simon of NASA s Goddard Space Flight Center in Greenbelt, Maryland, recent NASA Hubble Space Telescope observations confirm that the Great Red Spot now is approximately 10,250 miles (16,500 kilometers) across. ... Bead Show | ...

For circular orbits around Earth, we found . ... The distance of a satellite from the center of Earth in meters is an inconveniently big number, even before we raise it to the 3rd power. ... SQRT (25 638 838) = 5063.5 From this . ... T= 5063.5 seconds SQRT(r') 3 = 5063 sec r'SQRT=(r') . This is the practical form of Kepler's 3rd law for Earth satellites. ... International communication satellites are in the equatorial plane of the Earth and have orbits with a 24-hour period. ...

... DEPENDENCE OF ORDINARY WAVE ANOMALOUS ABSORPTION ON THE SOUNDING PROBLEM PARAMETERS . ... Transformation of electromagnetic wave into plasma waves plays an important role in different processes taking place in ionospheric plasma. ... According to modern point of view transformation of ordinary wave into plasma waves plays an important role in small-scale random irregularities generation when ionospheric plasma is heated by power radio wave [1,2]. ... Anomalous attenuation. ...

ST-ECF Technical Instrument Report WFC3-2009-04 The cross dispersion profiles of the WFC3 grisms H. Kuntschner, H. Bushouse, M. KЭmmel, J. R. Walsh April 30, 2009 ABS TRACT This document summarizes the analysis of the cross-dispersion profile width for the three grisms of the WFC3. For the IR grisms, the cross dispersion profile width derived from white light images and monochromator steps obtained in TV3 provide consistent results also in agreement with estimates derived from direct images. ...

Next: Results and Discussion Up: Evolution of Supernova Explosion Previous: - Dependence for the . In order to construct the - dependence for supernova explosions, we calculated separately the m ( z ) in the R band and N ( z ) taking the cosmological and evolutionary effects into account. ... where n(t) is the SN rate as a function of age of the galaxy, t(z) is the age of the galaxy as a function of its redshift, and is the density of galaxies in the Universe. ...

... Correlation analysis applied to recordings of the magnetic field and velocity of the Sun as a star reveals oscillations close to 300 s. The power spectrum of these oscillations is discussed. ... The power spectrum for the magnetic field has a wide maximum in the interval 580-200 s with peak at 390 s. The maxima of the power spectrum for the radial velocities correspond to 50 and 80 s. The curves for the second period of observation, May 20th, are presented in Figure 3. ...

Physica C 372-376 (2002) 316-321 www.elsevier.com/locate/physc Line width of Josephson flux flow oscillators V.P . Koshelets a,b,*, P.N. Dmitriev a, A.S. Sobolev a, A.L. Pankratov c, V.V. Khodos c, V.L. Vaks c, A.M. Baryshev b, P.R. Wesselius b, J. Mygind ... of Denmark, B 309, DK-2800 Lyngby, Denmark Abstract A combination of wide-band electronic tunability and moderate free-running line width makes the Josephson flux flow oscillator ( ... 2] V.P. Koshelets, S.V. Shitov, Supercond. ...

MULTIFREQUENCY OBSERVATIONS OF THE BLAZAR 3C 279 IN JANUARY 2006 и W. Collmar1 , M. Bottcher2 , T. Krichbaum3 , E. Bottacini1 , V. Burwitz1 , A. Cucchiara4 , D. Grupe4 , M. Gurwell5 , P. Kretschmar6 ... Center, ASDC c/o ESRIN, via G. Galilei, 00044 Frascati, Italy 1 6 ABSTRACT We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent -ray blazar 3C 279 , which was organised around an ... 10 Energy (keV) be measured (Fig. ...

... We study ergodic properties of random maps defined as collections of nonsingular maps $f_1,\dots,f_w$ from a compact metric space $(X,\rho)$ into itself taken with probabilities $p_1,\dots,p_w$ ($\sum_i^wp_i=1$) and considered as Markov processes on $X$. ... In the first situation, when the random map is expanding on average, we mainly follow ideas borrowed from the theory of piecewise expanding maps and the corresponding Banach space is a version of the space of functions of bounded variation on $X...