Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

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• Massive X-ray Binaries
• PSR B0042-73 in the Small Magellanic Cloud
• ADS Abstract Service Results

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. ...

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... It has been largely superceded by MatWeb .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 . ...

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• Untitled Document

... Determination of Black Hole Masses via Correlations between their X-Ray Spectral and Timing Properties " . ... This fact strongly support our theoretically motivated idea that low frequency QPO for a particular BH state is inversely proportional to BH mass.Based on our scaling technique, we determine BH masses in H1743-322, GX 339-4, XTE J1650-500, XTE J1859-226, 4U 1543-47, 4U 1630-47, using independently known masses of XTE J1550-564, GRO J1655-40 and GRS 1915+105 as references. ...

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• Magnetic Fields
• Sun [Oulu]
• The Sun

Interstellar matter. Galaxies 77 Properties of the interstellar gas clouds I.V. Gosachinskij St.Petersburg branch of Special Astrophysical observatory, St.Petersburg, Russia The characteristics of interstellar gas clouds play the main role in any theories of star formation. ... So the neutral atomic clouds may be named as "grand parents" of stars and their properties play genetic role for whole chain of matter transformations in the galaxies. ... Ta r : T a : V : l b l b Fig. ...

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• RADIOSUN Workshop 2014
• The XIII Russian-Finnish Symposium on Radio Astronomy

... ICND-96, Saratov, Russia. ... And though a number of efficient methods of digital sound compression is developed by far, there is still a need in new efficient methods. In this report we study a possibility of application of fractal methods to compression of speech signals. ... In this method, a speech frame is divided into larger pieces called domains, and smaller ones called regions, and an optimal set of affine transformations of domains into regions is calculated. ...

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• Kotel'nikov IRE RAS, LASLDS

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

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• Starlight Polarization
• Publications of Dmitri Wiebe
• Project: PAHs

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

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• http://www.aaa.org/s932/images/09fallclass2.pdf
• Lecture Series 2011-2012 ? тАЬAt Last: Seeing Supermassive Black Holes Shred
• Lecture Series 2010-2011 ? ?Illuminating Dark Matter? by Neal Weiner ? Amateur

... Ionization Properties of the Dusty Mesosphere . Boris A. Klumov, Sergey I.Popel Institute for Dynamics of Geopsheres, Russia . ... The problem of influence of the dynamics and charging of dust particles on the ionization properties of the polar summer mesosphere is considered. ... We introduce the notion "dusty mesosphere" for the layer of the mesosphere at the altitudes of approximately 80-90 km, where the conditions for the nucleation and formation of macro (dust) particles are fulfilled. ...

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... 7 EPSC2012-52 2012 European Planetary Science Congress 2012 c Author(s) 2012 E P SC European Planetary Science Congress Properties of the impact-produced lunar exosphere during Perseid 2009 meteor shower A.A. Berezhnoy (1), O.R. Baransky (2), K.I. Churyumov (2), T.K. Churyumova (2), V.V. Kleshchenok (2), E.A. Kozlova (1), V. Mangano (3), V.O. Ponomarenko (2), Yu.V. Pakhomov (4), V.V. Shevchenko (1), Yu.I. Velikodsky (5) (1) Sternberg Astronomical Institute, Universitetskij pr., ... 12/13, 2009. ...

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• Шевченко Владислав Владимирович
• Ekaterina A. Kozlova
• Geophysical Research Abstracts

... 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. ...

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• General information

OBSERVATIONS OF COORBITAL SATELLITES OF SATURN Emel'yanov N., Varfolomeev M. Sternberg State Astronomical Institute, Moscow, e-mail : emelia@sai.msu.ru Institut de MИcanique CИleste et de Calcul des иphИmИrides, Paris, e-mail : emelia@imcce.fr Abstract. To improve the orbital parameters and masses of coorbital satellites of Saturn, Janus and Epimetheus, new observations of these satellites are necessary. ... IN: Saturn. ... New observations of Saturn's coorbital satellites" - Icarus. ...

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• Data bases of Natural Satellites. Documentation. Structure

... We report on a study of the infrared properties of Bi 2 Sr 2 CaCu 2 O 8+ d , Bi 1.66 Pb 0.34 Sr 2 CaCu 2 O 8+ d , and Tl 2 Ba 2 CuO 6+ d crystals at doping levels from underdoped to strongly overdoped. ... While we observe a normal-state gaplike depression in 1/ t ( w , T ) in the underdoped regime, it is not observed in the overdoped regime. While the high-frequency 1/ t ( w , T ) is temperature independent in the underdoped regime, it scales with temperature in the overdoped regime. ...

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• LHPP ISSP RAS
• Department of Solid State Physics MIPT
• LPCBC: Abstract, 1_5

You might wonder how a black hole could be found if nothing including light can escape from it. ... HDE 226868 is a massive blue supergiant star; its companion is believed to be a black hole, surrounded by an accretion disc of gases from HDE 226868 which are spiraling into the black hole. ... Three other objects -- LMC X-3 in the Large Magellanic Cloud galaxy, and A0620-00 and V404 Cygni in our galaxy -- are also believed to have black holes as one of their components. ...

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• ASP: Black Holes: An Introductory Resource List
• ASP: A Good Definition of the Word "Planet": Mission Impossible?
• ASP: The Music of the New Spheres?

Home . ... Observing . Exposure Time Calculator (ETC) . Survey processing . ... ESO - Public Surveys . near IR surveys . ... Exposure Time Calculator . ... Survey Area Definition Tool . Recommended values for Detector Integration Time (DIT) . ... Detector Properties . ... Filter properties . ... ESO ][ VISTA Home ] ...

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... Astronomy in Ukraine Past, Present, and Future (MAO-2014) . ... Erik Hog (Niels Bohr Institute, Copenhagen, Denmark) Absolute astrometry in the next 50 years Abstract . ... In brief, the two Gaia-like missions would provide an astrometric foundation for all branches of astronomy from the solar system and stellar systems to compact galaxies, quasars and dark matter (DM) by data which cannot be surpassed the next 50 years. ... Is there any future for the ground based astrometry technique now? ...

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• Achievements - Page 4
• КАРТОТЕКА ПУБЛ?КАЦ?Й СП?ВРОБ?ТНИК?В ГАО НАН УКРА?НИ
• Dept. for Physics of Stars&Galaxies

... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 4ґ5 Gyr than in the sparse ones. ...

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• http://sn.sai.msu.ru/~sil/preprints/iau245sil.pdf
• http://sn.sai.msu.ru/~sil/preprints/mykukar.pdf
• http://sn.sai.msu.ru/~sil/preprints/bul_eng.pdf

... 322, P L21-L24 (1997). Abstract . ... 322, P L25-L28 (1997). ... 322, P L29-L32 (1997). ... 322, P L33-L36 (1997). ... 322, P L37-L40 (1997). ... 322, P L41-L44 (1997). ... 322, P 709-718 (1997). ... 322, P 719-729 (1997). ... 322, P 730-746 (1997). ... 322, P 747-750 (1997). ... 322, P 751-755 (1997). ... 322, P 756-763 (1997). ... 322, P 764-777 (1997). ... 322, P 778-784 (1997). ... 322, P 785-800 (1997). ... 322, P 801-806 (1997). ... 322, P 807-816 (1997). ... helpdesk@link.springer.de . ...

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• Springer LINK:A&A-EE: Table of Contents Volume 329 Number 1 (1998)
• Wavelets and equations
• Springer LINK:A&A-EE: Table of Contents Volume 323 Number 3 (1997)

Modern Dynamic Methods of Determination of Parameters of Meteor Bodies . ... The study takes an approach in modelling the fireballs' mass and other properties from the rate of body deceleration in the atmosphere as opposed to conventionally used luminosity. An analytical model of the atmospheric entry is calculated for registered fireballs using published observational data and evaluating parameters describing drag and ablation of meteors and bolides along the luminous segment of the trajectory. ...

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• Keywords_133
• Keywords_46
• Keywords_17

Pulsar - the neutrone star. ... Its physical properties are greatly changed. ... Naturally after the discovery of pulsar connection with the remains of the supernew star outbursts it was supposed that the pulsars and the neutron stars are the same objects. ... In the external layer of a neutron star, where the substance dense is not so great to break the cores; they may from the hard chip structure, which at the pulsar rotation decreasing is broken the starquake. ...

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• merkurie
• Astronomy
• blackholee