... More than 300 surface reconstructions are already known for pure Si surface and Si surface with adsorbate. Study of their properties by the methods of surface physics reveal numerous interesting phenomena including various phase transitions accompanied by changes of Fermi-surface topology, development of the charge-density wave, etc . ... The charge-density wave (CDW) develops in materials with a chain-like crystal structure at temperatures below the Peierls transition temperature. ...

... 101) Байки из Фидо (7) Литература (16) Листая страницы прошлого Выберите месяц Апрель 2016 (2) Март 2016 (4) Февраль 2016 (4) Январь 2016 (5) Декабрь 2015 (4) Ноябрь 2015 (3) Октябрь 2015 (5) Сентябрь 2015 (5) Август 2015 (5) Июль 2015 (5) Июнь 2015 (4) Май 2015 (8) Апрель 2015 (5) Март 2015 (4) Февраль 2015 (4) Январь 2015 (7) Декабрь 2014 (7) Ноябрь 2014 (4) Октябрь 2014 (5) Сентябрь 2014 (8) Август 2014 (8) Июль 2014 (6) Июнь 2014 (7) Май 2014 (11) Апрель 2014 ...

An Ancient Universe: How Astronomers Know the Vast Scale of Cosmic Time . ... INTRODUCTION . ... Based on their personal beliefs, they find fault not only with biological evolution, but also with modern astronomical ideas about the age, expansion, and evolution of the universe. ... An Ancient Universe - Table of Contents . ... The Ancient Universe - The Age of the Expanding Universe - The Age of the Oldest Stars - The Age of Light From Distant Galaxies - The Age of the Chemical Elements | ...

... The evolution of magnetic fields in OB-type stars from the study of open clusters of different ages . ... Wade G. A. The MiMeS Project: Magnetism in Massive Stars . ... Polosukhina N., Shavrina T., Drake N., Kudryavtsev D. Smirnova M. New results of the spectral observations of CPstars in the Li I 6708? spectral region with BTA telescope of SAO RAS . ... Magnetic Stars-2010 . ... List of participants . List of reports . ... Laboratory for the Stellar Magnetism Study of SAO of the RAS . ...

... Future seminars . ... Long -term evolution of 27 days signal in solar activity and terrestrial magnetic indices - common features and differences ". ... The 27-day signal created by the solar rotation is reflected by the 27-day geomagnetic signal. We study the long-term evolution of the 27 days signal and compare its properties for solar and geomagnetic activity. ... We obtain that 'short' and 'long' period in the 27-days range are differently reflected in the solar and geomagnetic activity. ...

... We show the analysis of low-hard and intermediate states of sources XTE J1550-564, H 1743-322, GX 339-4, XTE J1859-226, XTE J1650-500 and GRS 1915+105. ... Directly applying the scaling technique we also obtain that a ratio of the BH masses in XTE J1859-226 and in XTE J1550-564 is , and the corresponding ratio for XTE J1650-500 and XTE J1550-564 is . These values of scaling factors r implies that BH masses are ; solar masses in XTE J1859-226 and XTE J1650-500 respectively. ...

... EVE : · : -2-1- Kourou ­ · ­ () · 170 kg entry mass ­ High Balloon (ESA) · 170 kg entry mass ­ Optionally: Low balloon (Japan) · 35 kg entry mass Geometric configuration Insertion orbit : 250/66000 km Period = 1 day Inclination : 90° Periapsis node : ~ - 30° Sequence : · · · · · · · · Arrival Vinf = 3 km/s Entry probe 1 separation T0 ­ 7 days Entry probe 2 separation T0 ­ 5 days Orbiter acceleration DV = 50 m/s Probe ... 2005: - 2006-2015 2015 EVE - · EVE ­ ­ , ­ ( · - ...

... Part 00 PDF Introduction and Overview . ... Part 02 PDF Stars Phenomenology . Part 03 PDF Stellar Structure . Part 04 PDF Stellar Evolution . ... Part 06 PDF Basic Properties of Galaxies . Part 07 PDF Chemical Evolution . Part 08 PDF Stellar Dynamics . Part 09 PDF Spiral Galaxies . Part 10 PDF Elliptical Galaxies . Part 11 PDF Dwarf Galaxies . Part 12 PDF Active Galaxies . Part 13 PDF Large Scale Structure . ... Part 16 PDF Galaxy Evolution . ...

... It has been largely superceded by MatWeb . Conversion Factors . Material properties . Physical constants . Astronomical constants . This table gives conversion factors to convert various units to their SI equivalents. ... The units are SI. This is a short list of physical constants in SI units. ... Boltzmann constant . ... Gas constant . ... Mass . ... Plank's . ... Radiation constant . ... This is a short list of astronomical constants in SI units. ... Sun . ...

Authors: Yu.G. Shevelev , V.A. Marsakov , . ... We have constructed and investigated properties of metallicity function of disk stars with different ages, proceeding from the statistically restored real altitude distributions of stars at the solar galactocentric distance. It is shown that the metallicity distribution of stars in each age range is not of Gaussian form, but it may be considered as a superposition of two normal distributions centered at -0.2 and 0.0 dex. ...

... Spectra obtained with the 6-m telescope of SAO RAS are used along with archival data from Spitzer and several ground-based telescopes to infer a strength of PAH emission, age, properties of the UV radiation field, and metallicity of studied HII complexes. Physical properties (age, radiation field parameters, metallicity) are related to the F 8 /F 24 ratio used as a proxy for the PAH abundance in order to reveal factors that may influence the PAH evolution in HII complexes. ... Projects | ...

Studies of oscillation frequencies of many stars with very high precision gives insights into stellar evolution by knowing how the cores of stars change (starting in the bottom left corner in the sequence above) from hydrogen fusion-burning cores to helium fusion-burning cores, with intermediate stages where hydrogen fusion-burning shells expand into red giant sizes. A Hydrogen shell fusion star and a Helium core fusion star are indistinguishable when looking only at their surface properties. ...

Pixels , slits and facets for the NGST NIRSpec: Appendix ST-ECF Instrument Science Report NGST 2002-01a Pixels , slits and facets for a MEMS-type spectrograph for NGST Appendix : Extension to different PSF and detector properties Santiago Arribas, Peter Jakobsen, Robert Fosbury Wolfram Freudling --1-- ST-ECF Instrument Science Report NGST 2002-01a Pixels , slits , and ... This PSF meets the two requirements established by Bely et al. for the OTA optical quality. ...

... Clustering of AGN and QSOs at z=1 . Using galaxies from the DEEP2 Redshift Survey and AGN from the AEGIS/Chandra survey and QSOs from SDSS, I present the cross-correlation function of AGN/QSOs and 'normal' galaxies at z=1. Using the known clustering of DEEP2 galaxies, this leads to an estimate of the bias and typical host dark matter halo mass of AGN/QSOs as a function of X-ray luminosity, which constrains AGN formation models. oral . ... Tuesday: AGN correlation functions, LSS, environments . ...

... The main topics of the Conference were: 1. ... Asteroid-comet hazard (origin and dynamic evolution of objects approaching the Earth, observations, physical properties, cataloguing, data bases, estimation of collision probability with the Earth and other bodies). ... 5) In this connection the problem of concluding the international political agreement within the frames of UN about common active counteractions to the bodies on the orbits leading to collisions with the Earth is urgent. ...

Sagittarius Star Cloud . ... Credit Copyright: Hubble Heritage Team ( AURA / STScI / NASA ) Explanation: Stars come in all different colors. ... Most stars in the above Sagittarius Star Cloud are orange or red and relatively faint, as our Sun would appear. ... Stars of the Sagittarius Cloud lie towards the center of our Galaxy - tantalizing cosmic jewels viewed through a rift in the dark , pervasive, interstellar dust . This famous stellar grouping houses some of the oldest stars known. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

... Информация Руководство и преподаватели Арышенский Владимир Юрьевич . ... Публикации . ... Арышенский Е.В. , Арышенский В.Ю. , Журавлев Л.В., Беглов Е.Д. Effect of softening on the mechanical properties and formability of ribbon from alloy 3104 // Metal science and heat treatment. 2014. т.56(1-2). ... Арышенский Е.В. , Арышенский В.Ю. , Журавель Леонид Васильевич , Беглов Э.Д. Влияние разупрочнения на механические свойства и штампуемость ленты из сплава 3104 // Металловедение и термическая обработка....

... WORKSHOP "STELLAR ATMOSPHERES" . THE CHEMICAL AND DYNAMIC EVOLUTION OF STARS AND GALAXIES" . ... Chernomorka , Odessa , Ukraine . ... Modeling and interpretation of the stellar spectra of the usual and peculiar stars. Elemental abundances in the stars of different types and populations of the Galaxy. Chemical evolution of the stars and galaxies. ... Andrievsky S.M. (OAO ONU, Odessa, Ukraine) . ... CHEMICAL and DYNAMIC EVOLUTION STARS and GALAXIES" . ... Odessa mailto:astro@paco.odessa.ua . ...

... Kopylov, A.I., Kopylova, F.G. "Structure of galaxy groups and clusters and measurement of their masses", . ... Kopylova, F.G., Kopylov, A.I. "Peculiar motions of galaxy clusters and groups in the Hercules and Leo supercluster regions", . ... Kopylova, F.G., Kopylov, A.I. "Analysis of the properties of clusters of galaxies in the region of the Leo supercluster", . ... Kopylova, F.G., Kopylov, A.I. "Analysis of the properties of clusters of galaxies in the region of the Ursa Major supercluster", . ...