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Перегляд Відділення фізики і астрономії за темою "MS3: Physics of Stars and Galaxies"

Репозиторій DSpace/Manakin

Перегляд Відділення фізики і астрономії за темою "MS3: Physics of Stars and Galaxies"

Сортувати за: Порядок: Результатів:

  • Absorption spectra of dark interstellar clouds − a long term project for the Terskol Observatory 
    Krelowski, J.; Musaev, F.A.; Galazutdinov, G.A. (Кинематика и физика небесных тел, 2005)
    We present the long-term project on investigation of the absorption spectral features originating in interstellar HI clouds. This project is being realized at the Terskol Observatory. The most important results and the ...
  • Ages of stellar populations in the low-metallicity star-forming dwarf galaxies 
    Guseva, N.G. (Кинематика и физика небесных тел, 2005)
    We perform a comprehensive study of ten star-forming (SF) galaxies with the oxygen abundance Z<Z/20 [5] and blue extended low-surface-brightness components (LSB). Long-slit spectroscopy and V , I CCD photometry were obtained ...
  • CrH and FeH bands in atmospheres of the ultracool objects 
    Zhukovska, S.; Pavlenko, Ya.V. (Кинематика и физика небесных тел, 2005)
    Absorption CrH and FeH bands are of importance for study of atmospheres of ultracool dwarfs (Teff < 2200 K). Results from calculations of synthetic spectra of these objects using the new theoretical CrH and FeH opacities ...
  • Dark energy and large-scale structure of the Universe 
    Kulinich, Yu.; Novosyadlyj, B. (Кинематика и физика небесных тел, 2005)
    The evolution of matter density perturbations in the two-component model of the Universe filled with dark energy (DE) and dust-like matter (M) is considered. We have analysed it for two kinds of DE with ω ≠ −1: a) an ...
  • Detailed chemical abundances of several CP-stars of the upper main sequence 
    Gopka, V.F.; Yushchenko, A.V.; Shavrina, A.V.; Musaev, F.A. (Кинематика и физика небесных тел, 2005)
    We present a study of the chemical composition of atmospheres of five stars of the upper main sequence. Investigations of the SB2 system 66 Eri permit to find the gallium spots in atmospheres of the components, the secondary ...
  • Flux density monitoring of extragalactic radio sources. Observations at 22, 37 GHz and 102 MHz within the research programs for the RT-22 CrAO and the Odesa Observatory "URAN-4" IRA NASU 
    Volvach, A.E.; Ryabov, M.I. (Кинематика и физика небесных тел, 2005)
    Observations of the millimeter wave emission variability of extragalactic radio sources may give an important information on active processes in their inner parts. The millimeter wave observations of extragalactic radio ...
  • Hα star formation rates for a sample of star-forming galaxies from SDSS (DR1) 
    Izotova, I.Y.; Parnovsky, S.L.; Izotov, Y.I. (Кинематика и физика небесных тел, 2005)
    A study of current star formation rates (SFRs) derived from Hα emission of ionized hydrogen for 1305 star-forming galaxies from the Sloan Digital Sky Survey (Data Release 1) is carried out. Current SFRs are derived from ...
  • Impact of the stellar oblation effect on estimation of the magnetic dipole strength 
    Khalack, V. (Кинематика и физика небесных тел, 2005)
    The surface magnetic field structure of an ellipsoidal star is modelled in the frame of the magnetic charge description (MCD) approach. It is shown that the stellar oblation effect can lead to the essential overestimation ...
  • Lithium and its isotopic ratio ⁶Li/⁷Li in the atmospheres of sharp-lined roAp stars γ Equulei and HD 166473 
    Shavrina, A.; Polosukhina, N.; Khan, S.; Pavlenko, Ya.; Khalack, V.; Wade, G.A.; Quine, t P.; Mikhailitska, N.; Yushchenko, A.; Gopka, V.; Kudryavtsev, D. (Кинематика и физика небесных тел, 2005)
    The lithium lines at 6708 Å for two sharp-lined roAp stars γ Equ and HD 166473 and at 6103 Å for γ Equ were analyzed in high resolution spectra. Three spectral synthesis codes – STARSP, ZEEMAN2, and SYNTHM – were used. New ...
  • Lithium lines in spectra of C-giants 
    Yakovina, L.A.; Pavlenko, Ya.V. (Кинематика и физика небесных тел, 2005)
    The resonance λ 670.8 nm and subordinate λλ 812.6, 610.4, 497.2, and 460.3 nm lithium lines are investigated as the lithium abundance indicators in spectra of cool C-giants.
  • Microlensing effects and structure of gravitational lens systems 
    Fedorova, E.V.; Alexandrov, A.N.; Zhdanov, V.I. (Кинематика и физика небесных тел, 2005)
    A study of gravitational microlensing of distant objects is presented. We performed simulations of light curves and trajectories of the image centroid of an extended source in the Chang–Refsdal lens with shear and continual ...
  • Physical properties of substellar population in the young σ Orionis cluster 
    Bejar, V.J.S. (Кинематика и физика небесных тел, 2005)
  • Quantitative analysis of the V838 Monocerotis spectrum 
    Kaminsky, B.; Pavlenko, Ya.V. (Кинематика и физика небесных тел, 2005)
    We present the determination of the effective temperature, iron abundance, and microturbulent velocities for the pseudophotosphere of V838 Mon observed on February 25, March 2 and 26, 2002. Physical parameters of the line ...
  • Simulation of the gravitational collapse and fragmentation of rotating molecular clouds 
    Berczik, P.; Petrov, M.I. (Кинематика и физика небесных тел, 2005)
    In this paper we study the process of the subsequent (runaway) fragmentation of a rotating isothermal Giant Molecular Cloud (GMC) complex. Our own Smoothed Particle Hydrodynamics (SPH) gas-dynamical model successfully ...
  • Some points of the monitoring of flare stars using the synchronous network of remote telescopes 
    Romanyuk, Ya. (Кинематика и физика небесных тел, 2005)
    We analyse the efficiency of observational campaigns which were carried out during seven years involving four astropoints in Ukraine, Russia, Greece, and Bulgaria. A possibility of the synchronous monitoring of stellar ...
  • Spectral energy distribution for GJ406 
    Lyubchik, Yu.; Pavlenko, Ya.V.; Jones, H.R.A.; Tennyson, J.; Pinfield, D. (Кинематика и физика небесных тел, 2005)
    We present results of modelling the bulk of the spectral energy distribution (0.45–5 μm) for GJ406 (M6V). Synthetic spectra were calculated using the NextGen model atmospheres of Hauschildt et al. [6] and the incorporate ...
  • The astronomical school on galaxies founded by academician G. Shajn at the Crimean Observatory 
    Pronik, I.I. (Кинематика и физика небесных тел, 2005)
    The first director of the Crimean Astrophysical Observatory academician G. A. Shajn actively studied the interstellar medium in the Galaxy and galaxies in the 1950s. He and his followers showed first that the interstellar ...
  • The constraints on the power spectrum of relic gravitational waves from current observations of large-scale structure of the Universe 
    Novosyadlyj, B.; Apunevych, S. (Кинематика и физика небесных тел, 2005)
    Within the framework of cosmological inflationary models, relic gravitational waves arise as a natural consequence of the quantum nature of primordial space-time metric fluctuations and a validity of the general theory of ...
  • The variations of very-high energy γ-quanta flux from the blazar 3C 66A in 2002 
    Fidelis, V.V. (Кинематика и физика небесных тел, 2005)
    The extra-galactic source blazar 3C 66A was observed in 2002 with the aid of the air Cherenkov telescope GT-48 dedicated for stereoscopic measurements of extensive air showers (EAS). The analysis of the observational data ...
  • Ultracool dwarfs 
    Pavlenko, Ya.V. (Кинематика и физика небесных тел, 2005)
    We present results of modelling of spectra of M-, L-, T-dwarfs. Theoretical spectra are fitted to observed spectra to study the main parameters of the low-mass objects beyond the bottom of the Main Sequence. Application ...

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