... The distributions of orbits eccenttricities and of angular momenta for the halo stars and the old disk population are considered. The distributions have gaps separating the halo from the disk and dividing the halo population into three groups. ... Рассмотрены распределения звезд гало и старого населения диска по величине эксцентриситета орбит и угового момента. Распределения имеют провалы, отделяющие гало от диска и делящие населения гало на три группы. ...

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Ballistic life-time . ... The orbit inclination to the equatorial plane (black line) and to the ecliptic plane (red line) are shown on the third panel. ... The launch orbital elements value and its evolution during flight is shown on the plot for the time interval (August 3, 1995 - October 16 2000). ... The critical parameter is perigee altitude shown on the first panel. ... This parameter determine the IB_Tail ballistic lifetime up to October 16, 2000. ... Dated 25 May, 2000 . ... INTERBALL mission ...

Welcome to the Starburst and Galaxy Evolution website.

Amanda Karakas One of the most important research fields in astrophysics is the study of the origin of the elements. ... Asymptotic Giant Blanch (AGB) Stars: For low and intermediate-mass stars (with initial masses between about 0.8 to 8 solar masses) the most important nucleosynthesis occurs when stars evolve off the main sequence to the giant branches. ... This indicates that these stars obtained their unusual abundances via mass transfer from a previous red giant star, that has long evolved away. ...

... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Late Stages of Stellar Evolution . Welcome to the home page of the Late Stages of Stellar Evolution" We are a research group which operates within the Astrophysics Group of the Australia Telescope National Facility. ... To investigate the late stages of stellar evolution and in particular the role of stellar mass-loss in the evolution of asymptotic giant branch stars, proto-planetary nebulae and extremely massive stars. ...

Apollo asteroids 1566 Icarus and 2007 MK6: Icarus family members? ... J., 668, L71-L74 (2007) . ... Although it is more complicated to search for near-Earth object (NEO) families than main belt asteroid families, since differential orbital evolution within a NEO family can cause current orbital elements to drastically differ from each other, we have found that Apollo asteroids 1566 Icarus and the newly discovered 2007 MK6 are almost certainly related. ...

... Inhomogeneous planetary nebulae: Carbon and Oxygen abundances, Astron. ... Abstract . text in English . ... text in Russian . ... Chemica evolution of the system of galactic planetary nebulae , Astrophysics, 45 , 451-463 (2002) . ... Evolution of Elemental Abundances in Planetary Nebulae, Astronomy Letters, 32 , 557-565 ( 2006 ) . ... text in Russian (0.23Mb) . ... He, C, N, and O Abundances in an Ensemble of Galactic Planetary Nebulae, Astronomy Letters, 35 , 518-533 ( 2009 ) . ...

... 8, ``Celestial Mechanics'', 2002 Expansion of the Hamiltonian of the planetary three--body problem into Poisson series in all elements using Poisson series processor PSP E. D. Kuznetsov 1 , K. V. Kholshevnikov 2 , A. V. Greb 3 1 Astronomical Observatory of Urals State University, Ekaterinburg The first step to solve it involves expansion of the corresponding Hamiltonian into Poisson series in all elements. ... As to osculating elements we deal with two systems of them. ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

... Content Model: %Body.Content . ... Note that the ID, LANG and CLASS attributes can be used with virtually all of the elements permitted in the document body. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...

... Astrophysics Group . ... SKALA meets LOFAR . ... SKA AAVS0 array . ... SKA Aperture Array in Australia . ... SKALA, designed at the University of Cambridge, was connected to the LOFAR HBA back end in order to perform a series of tests including: antenna pattern measurements using satellite passes, measurement of the spectrum with the active SKALA element, tests of SKALA LNAs stability over time, cross correlation tests with HBA tiles (X and Y polarizations) and beam-forming using SKALA as an HBA...

... Tonight's Sky . ... The Magazine . News . Observing . ... Community . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... elements . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Emily Cunningham "HALO7D: Investigating the Structure and Accretion History of the Milky Way Stellar Halo with HST Proper Motions and Keck Spectra" 2. M.N. Ishigaki "Chemical evolution of r-process elements in Draco dwarf spheroidal galaxies" 3. Stephan Geier "Hot subdwarf stars in the Galactic halo - Tracers of prominent events in late stellar evolution" 4. ... Duane M. Lee "Reconstructing the Accretion History of the Galactic Halo Using Stellar Chemical Abundance Ratio Distributions" 6. ...

... The main field of our team interests is the researching of galaxy clusters as well as single nearby galaxies. The galaxies and galaxy clusters, being gravitationaly bound and reliably distinguishable systems, allow us to determine their global physical characteristics. At the same time they are integrated as elements into higher level spatial structures or systems. ... Вack to main homepage . ...

... Dark Energy (Part of the Hubble Discoveries Series): http://hubblesite.org/hubble_discoveries/dark_energy/ (Flash-based multimedia tutorial on the discovery and meaning of dark energy; includes information on the origin and fate of universe) . ... Cosmology Visualizations from the NASA Universe Forum: http://www.cfa.harvard.edu/seuforum/einstein/resources_visual.htm#featcos (A series of computer visualizations of the evolution and structure of the universe, available in a number of formats.) ...

... The analysis shows, that asteroid ­ rubble pile loses its fast fragments in no time but the retaining fragments forms a compact structure immersed in dust ­ gas atmosphere, created by interaction of interplanetary medium with dispersed product of collisional evolution of asteroid. By interaction of an asteroid ­ rubble pile with interplanetary medium structures asteroid can increase its brightness on account of blowed up dust simulating phenomenon of distant comet's brightening. ...

Table of Contents | ... Index . Chapter 4 Statements This chapter describes all JavaScript statements. JavaScript statements consist of keywords used with the appropriate syntax. A single statement may span multiple lines. ... Chapter 5 Operators JavaScript has assignment, comparison, arithmetic, bitwise, logical, string, and special operators. This chapter describes the operators and contains information about operator precedence. ...

... Development of Ideas of Structure and Evolution of Stars. Integral Features of Stars, Which Determine Their Structure, Direction and Rate of Evolutuion. ... Connection between Potential and Thermal Energy of Star. ... Structure of a Main Sequence Star. Features of Massive Stars Evolution on the Main Sequence. Internal Structure of the Sun. ... White Dwarfs, Their Features. ... Evolution from the Main Sequence of Massive Stars. ... Evolution of Small Mass Stars till White Dwarfs Sequence. ...

... 172 ] Briefly, the count rate at the detector from a source at a redshift z is . ... Figure 55 shows the ``Green functions'' for the double compact binary merging rate   evolution assuming no collapse anisotropy. ... Another way that diverse peculiarities in the - distribution induced by the sources evolution could arise is connected with a possible non-monotonic character of the star formation rate in galaxies. ... 22 ] Figure  56 shows two-dimensional cuts through the parameter space. ...