... Stellar Evolution is driven entirely by the never ending battle between Pressure and Gravity . As imbalances are reached, the star is driven to find a new Energy source. ... Pressure and gravitational forces are equal, the star is stable and its core is sufficiently hot to fuse Hydrogen into Helium More about main sequence stars . ... The luminosity generated by the core fusion of Helium into Carbon is far greater than the shell luminosity associated with the fusion of Hydrogen into Helium. ...

Welcome to the Starburst and Galaxy Evolution website.

... 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. ...

With the Square Kilometre Array planned to begin observations in around a decade and large neutral hydrogen multibeam surveys currently underway at Arecibo, the question of what we can learn about the evolution of galaxies through neutral hydrogen observations is very timely. ... Robert Minchin (NAIC, chair) . Emmanuel Momjian (NRAO) . ... Robert Minchin (co-chair) . Emmanuel Momjian (co-chair) . ... R. Minchin & E. Momjian ...

... Evolution of the coalescence rate of double neutron stars (NS) and neutron star - black hole (BH) binaries are computed for model galaxies with different star formation rates. Assuming gamma-ray bursts (GRB) to originate from NS+NS or NS+BH merging in distant galaxies, theoretical - distributions for gamma-ray bursts (GRB) are calculated for the first time taking the computed merging rates into account. ... Effect of sources evolution on - distribution and -test. ...

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

... We are developing the following problems: a) combine optical and microwave technic to the indication of non-linear surface waves and wave breaking field; b) modelling of microwave propagation in a multiphase air-water interface; c) obtain quantitative dependencies of microwave radiation on geometry and statistics of wave breaking field in ocean surface; d) monitoring of ocean surface states using optical amd microwave airspace data sets. ... Important issue is spray and underwater bubbles. ...

... Poitiers, 23 January 2007 Science Vision for European Astronomy in the Next 20 Years 2 Is the initial mass function universal? ... High Poitiers, 23 January 2007 Science Vision for European Astronomy in the Next 20 Years 4 Do we understand stellar structure and evolution? ... Interferometry in near infrared and radio: measuring radii and resolving stellar surface Science Vision for European Astronomy in the Next 20 Years Poitiers, 23 January 2007 5 What is the life-cycle of the ISM and Stars? ...

... at the ISSP RAS. ... MSU student Kostretsova N.B. successfully defended her thesis entitled "Investigation of Thermal and Chemial Expansivity of Ceria-Based Solid Solutions". ... V.A. Kolotygin successfully defended his PhD thesis "Perovskite-Like Oxide and Composite Anode Materials for Solid Oxide Fuel Cells: Functional Properties and Electrochemical Behavior in Contact with Gallate- and Silicate-Based Solid Electrolytes" and was awarded PhD degree in the area of Materials Science and Engineering ....

... Search . Email & phone search . ... Astrophysics Group . ... Galaxy Formation and Evolution . Highlights & News . ... Main Projects . ... PhD Thesis Projects . ... 2013, Astrophysics Group, Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE . ...

Next: MASSES Up: EXTREME HELIUM STARS: PULSATION Previous: STELLAR PROPERTIES . ... Following main-sequence evolution, a red giant star in a close binary system may expand to fill its Roche lobe. ... Although Iben & Tutukov (1984) used this model to account for the EHes, the latter are not binaries (Jeffery et al. ... Final helium-shell flash in a post-AGB star. ... Accretion from the disk onto the surviving WD creates a star with a degenerate CO core and a helium envelope. ... Other models. ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... stars . ... Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... How do neutron stars generate steady magnetic fields? ... How can a neutron star exist if those neutrons are just going to pieces? Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... 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. ...

. Head of the project is A.F.Kholtygin . E-Mails: . afkholtygin <at> gmail.com (A.F.Kholtygin) . yu.mi <at> mail.ru (Yu.V.Milanova) . Please insert @ instead <at> for connection .

Astronomy Picture of the Day . Evolution of the Moon . ... Credit Copyright: LRO , SVC , NASA Explanation: What is the history of the Moon? The Moon was likely created from debris expelled when a Mars-sized object violently impacted the Earth about 4.5 billion years ago. ... Rocks large and small continued to impact the surface, including a particularly large impact that created Aitken Basin about 4.3 billion years ago. ... Publications with keywords: Moon . Publications with words: Moon . ...

... 2012 March 20 . Evolution of the Moon . Video Credit: LRO , SVC , NASA . ... The Moon was likely created from debris expelled when a Mars-sized object violently impacted the Earth about 4.5 billion years ago. ... Rocks large and small continued to impact the surface, including a particularly large impact that created Aitken Basin about 4.3 billion years ago. ... Over the next few billion years lava flowed into Earth-side basins , eventually cooling into the dark maria we see today. ...

... You try to stop him to ask questions but you have no chance. He's talking faster and faster and going through stars one after another. ... But there is no answer. ... On top it says "Chez Stella -- Serving the Stars for 15 Billion Years." ... It contains three carefully drawn graphs labeled "Evolution of the Sun," "Evolution of a 25 Solar Mass Star," and "Temperature Changes in Six Stars." ... P.S. Should any other questions occur to you, remember you are always welcome at Chez Stella. ...

Russian . ... Very Early Universe: inflation, generation of primordial perturbations, preheating . Very Early Universe: inflation, generation of initial perturbations, preheating . Cosmic Microwave Background Radiation: anisotropy and polarization . ... Dark Energy and Dark Matter models . High Energy Astrophysics: accretion discs, cosmic rays, gamma-ray bursts . ... Astrophysics of black holes and wormholes . ...

... The acquisition data base of meteorological temporal data including systematic and chronologic cataloque for Global Tropical Cyclogenesis (on the whole of World Ocean's aquatorium) for 1983-1992 time interval is developed and based on personal computer IBM PC/AT. ... The data base consists of the following units: 1. ... This data base offers a unique opportunity to analyze macro- and synoptic-scale temporal features of global tropical cyclogenesis as indivisible physical process. ...

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. ...