... 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. ...

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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 Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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• http://www.aaa.org/s932/images/09fallclass3.pdf

... This motivated the SAGE-SMC (Surveying the Agents of Galaxy Evolution in the Tidally Stripped, Low Metallicity Small Magellanic Cloud) Spitzer Legacy program with the specific goals of studying the amount and type of dust in the present interstellar medium, the sources of dust in the winds of evolved stars, and how much dust is consumed in star formation. ...

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• Starburst and Galaxy evolution
• The Formation and Evolution of Planetary Systems (FEPS): Discovery of an
• HST this week: 295

Database Development for Solar System Small Bodies' Orbital Evolution Based on Modern Mathematical Models and Methods . ... Research of the orbital evolution of 6163 asteroids belonging to Apollo, Amor, Aten groups and 197 short-period comets was performed for the time period from 1800 to 2206. 815 objects have been identified among asteroids approaching closely to inner planets, in particular 612 objects passing through the Earth's sphere of action. ...

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... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

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• The Unexpected Past of a Dwarf Galaxy | ESO
• An infrared/visible light comparison of views of the Helix Nebula | ESO
• An infrared/visible light comparison of views of the Helix Nebula (unannotated)

... Conditions are like those inside a white dwarf. ... It is not well understood what changes are caused inside the star, but the star certainly loses mass between leaving the main sequence and becoming a helium-burning horizontal branch star. When core helium burning ends, the low mass star rejoins the asymptotic giant branch, where the hydrogen and helium burning shells interact, causing a series of thermal pulses. ... Stars less than one third of a solar mass will not ignite helium at all. ...

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• Solar System Research
• Armagh Observatory
• C.S. Jeffery, Research Astronomer

... Hydrogen Blob N88A in the Small Magellanic Cloud . ... WFPC2 , HST , ESA , NASA Explanation: The bright blob of hydrogen gas cataloged as N88A is seen at the right. ... Other regions of ionized hydrogen ( H II regions ) which surround new born stars can be over a thousand light-years across but astronomers now recognize that these small ionized hydrogen blobs contain some of the most massive stars known. ... Publications with keywords: ionization - hydrogen - star formation . ...

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• Астронет > Hydrogen Blob N88A in the Small Magellanic Cloud
• Illusion and Evolution in Galaxy Cluster Abell 2667
• Астронет > Illusion and Evolution in Galaxy Cluster Abell 2667

... 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. ...

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Galactic Wind Shells and High Redshift Radio Galaxies . ... M.Krause . Astronomy & Astrophysics, v.436, 845-851 . Very Light Jets II: Bipolar large scale simulations in King atmospheres [small version] . ... Simulations of Astrophysical Jets in Dense Environments . M.Krause, V.Gaibler & M.Camenzind . in: High Performance Computing in Science and Engeneering '05 eds.: E.Krause, W.J ger & M.Resch. ... M.Krause & M.Camenzind . ... Martin Krause & Paul Alexander . ... Martin Krause . ...

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• Martin Krause - Large Scale Very Light Jet Simulation
• Galaxy Evolution: Regulation of the ISM and Star Formation
• Galaxy Evolution: Cosmological evolution of star formation

... July 29, 1999 . Hydrogen Blob N88A in the Small Magellanic Cloud . ... Emerging from the cool, dusty interstellar medium in a nearby irregular galaxy known as the Small Magellanic Cloud , N88A hides hot young stars at its core. ... Other regions of ionized hydrogen ( H II regions ) which surround new born stars can be over a thousand light-years across but astronomers now recognize that these small ionized hydrogen blobs contain some of the most massive stars known. ... About APOD > . ...

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• APOD: 2007 March 5 - Illusion and Evolution in Galaxy Cluster Abell 2667
• APOD: 2009 June 3 - VB 10: A Large Planet Orbiting a Small Star
• APOD: 2010 October 17 - NGC 346 in the Small Magellanic Cloud

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Although they look tranquil here, observed up close such young stars would seethe and glare violently. ... Once thought to be a satellite of our own galaxy, increasingly the Small Magellanic Cloud is believed to be an interloper from the intergalactic void which has wandered into its present location and will eventually recede away into the darkness. ... Your email address will not be published. ...

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• Hubble throws light on dark matter | Astronotes
• COROT-7b: Exoplanet with a sky made of stone | Astronotes
• Kepler-10b: world of lava oceans? | Astronotes

Classroom Activity: Making a Rainbow . ... When white light from the Sun or a light bulb passes through a prism, the light splits into its component wavelengths. ... Red, blue, green colored filters - if possible, cut 1x4-inch pieces of the filters for each student . ... Many students have the misconception that filters somehow dye the light a certain color. ... Younger students can draw the rainbow and make up a mnemonic for remembering the order of the colors (such as, ROY G. BIV). ...

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• ASP: Stellar Evolution (a la Chez Stella)
• ASP: Family ASTRO: History and Evolution
• ASP: Good Astronomy Activities on the WWW

... The discovery of this radiopulsar is potentially important not only for confirming the theory of evolution of NS, but also for understanding processes occurring in stellar winds   from normal stars. After all, a radiopulsar orbiting in the semi-transparent stellar wind of a normal star is a sort of probe scanning an inhomogeneous plasma by pulsed radiation (Lipunov and Prokhorov, 1984)[ 110 ]. ... 1) absorption of radio waves (light curve); . ... This object is a radiopulsar orbiting a Be-star. ...

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• Initial parameters of compact stars
• Evolution of Magnetic Rotators
• Nomenclature

Hubble Observations Shed New Light on Jupiter Collision . Was it a comet or an asteroid? ... Their initial findings, combined with results from other space-borne and ground-based telescopes, shed new light on Jupiter's atmospheric winds, its immense magnetic field, the mysterious dark debris from the impacts, and the composition of the doomed comet itself. ... Hubble's ultraviolet observations show the motion of very fine impact debris particles now suspended high in Jupiter's atmosphere. ...

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• K-band Arcetri Obscured Supernova Search - SNe Intro
• Dust evolution across the CO snowline in a protoplanetary disk
• Deadlines - IGM@50: Is the Intergalactic Medium driving Star Formation? - June

Do LIRGs follow the Tully-Fisher relation? ... For a small we can say majority of investigate i Conclusion number of galaxies in our sample, that the T-F relation holds. ... The purpose of this research was to study the LIRGs (Luminous Infrared Galaxies) and see if they follow the Tully-Fisher relation. The LIRGs are different to normal galaxies in the fact that they emit 90% of their light in infrared. ... The faster the galaxy rotates, the wider is the emission line in velocity. ...

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• http://www.naic.edu/~astro/frontiers/talks/EZ_mag.pdf
• http://www.naic.edu/~astro/School/Talks/large_pdf/brown_future_2.pdf
• http://www.naic.edu/~astro/School/Talks/brown_future.pdf

... Bad Astronomy . Misconceptions . ... Bad Astronomy : "We're light years more advanced than our competition!" ... Even the closest astronomical object, the Moon, is 400,000 kilometers away! ... A beam of light will travel 9,500,000,000,000 kilometers in one year. This distance is defined as a light year ; the distance light travels in a year. ... This is another example of Bad Astronomy; like a light year, a parsec is a unit of distance, not time (to be specific, it equals 3.26 light years) . ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy

... ,E_=v_B_z,B_z0 Light cylinder at RL U = electric voltage created by rotating BH I = large scale current I U LK Centrifugal acceleration in BH magnetosphere Assume `reasonable' B and E fields, from current I : Bz = 0 = v/v 1 Motion of a test particle P ( ) Light cylinder Pz() P() z() Here = 0.01 and = rc,i/RL = 0.01 Growth of particle Lorentz factor ( ) log k At light cylinder : = Here with initial value is the absolute maximal reachable by this process (ie no ...

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• http://hea.iki.rssi.ru/conf/hea2010/Presentations/21/Levin.pdf
• http://hea.iki.rssi.ru/Z-90/arc/21/Dolgov.pdf

The Cartwheel Galaxy . This false-color composite image shows the Cartwheel Galaxy as seen by the Galaxy Evolution Explorer's far-ultraviolet detector (blue); the Hubble Space Telescope's Wide Field and Planetary Camera 2 in B-band visible light (green); the Spitzer Space Telescope's infrared array camera at 8 microns (red); and the Chandra X-ray Observatory's advanced CCD imaging spectrometer-S array instrument (purple). ...

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• How can the Hubble Space Telescope (HST) take pictures of objects light-years
• small (4 inches or smaller) | Astronomy.com
• Would the thin atmosphere and absence of light pollution on Mars make for a

... Вес 36.4 кг . ... Бренд: Изоком . ... Строительная изоляция . ... Позитивный качественный детский ковер с изображением сюжета из мультсериала 'Маша и Медведь' украсит интерьер детской комнаты и наполнит мир вашего ребенка яркими и живыми красками. ... Небольшой размер и вес позволит без труда перемещать ковер в разные места комнаты и легко производить уборку под ковром. ... Ковер Маша и Медведь" 80*133 см" - яркий красочный ковер, за которым легко ухаживать сделает уютной комнату вашего ребенка. ...

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... Image Quality of the VLT . Total Optical Control . First light for the ESO VLT unit telescope 1 occurred during the workshop. ... The image shown (Figure 1 ) here was obtained with the VLT on May 16, 1998, in red light (R band), i.e. while the mirror was still uncoated. ... In this diagram (FIgure 2), the measured image quality of the VLT UT1 astronomical images is plotted versus the ``seeing", as measured by the Seeing Monitor, a small telescope also located on top of the Paranal Mountain. ...

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• The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow...
• The Formation and Evolution of LMC Rich Star Clusters: NGC 1818
• Near IR Astronomy with the ESO VLT