... Spherical Planetary Nebula Abell 39 . ... 28.07.2005 . ... Credit Copyright: Jim Misti ( Misti Mountain Observatory ) Explanation: Ghostly in appearance, Abell 39 is a remarkably simple, spherical nebula about five light-years across. ... Still visible, the nebula's central star is evolving into a hot white dwarf. ... Publications with keywords: planetary nebula - stellar evolution - white dwarf - Abell 39 . Publications with words: planetary nebula - stellar evolution - white dwarf - Abell 39 . ...

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• Астронет > Spherical Planetary Nebula Abell 39
• The Necklace Nebula
• Searchlight Beams from the Egg Nebula

... 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. ...

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• Stellar Evolution - the life and death of stars
• Stellar Evolution Questions
• Late Stages of Stellar Evolution: AGB NewsLetter

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2005 July 28 . Spherical Planetary Nebula Abell 39 . ... Explanation: Ghostly in appearance, Abell 39 is a remarkably simple, spherical nebula about five light-years across. ... Abell 39 is a planetary nebula , formed as a once sun-like star's outer atmosphere was expelled over a period of thousands of years. ... About APOD | ...

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• APOD: 2012 October 8 - Spherical Planetary Nebula Abell 39
• APOD: 2013 December 5 - Planetary Nebula Abell 7
• APOD: 2010 November 3 - The Necklace Nebula

... 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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Welcome to the Starburst and Galaxy Evolution website.

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• GOODS: The Great Observatories Origins Deep Survey
• Starburst and Galaxy Evolution

... B. Vicini, A. Natta, A. Marconi, L. Testi, D. Hollenbach, B.T. Draine . 1998, A&A, in press . ... 1998, ApJ, in press . ... L. Testi, F. Palla, A. Natta . ... Francesco Palla . 1998, The Physics of Star Formation and Early Stellar Evolution, eds. C.J. Lada and N. Kylafis, in press . ... 1998, in "The Molecular Astrophysics of Stars and Galaxies - A Volume Honouring Alexander Dalgarno", edited by T. W. Hartquist and D. A. Williams, Oxford University Press, in press . ... Star Formation Group . ...

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• LEONARDO TESTI - VIEWGRAPHS/PROCEEDINGS
• INAF - Osservatorio di Arcetri
• Dust evolution across the CO snowline in a protoplanetary disk

... 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 ) . ...

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• Vladimir P. Reshetnikov's Home Page
• List of publications
• Galaxy chemical evolution: Links

Our publications in 2007 year Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y.; Burenkov, A. N.; SAO; Russia; SAAO; Africa, South . eprint arXiv:0712.4205, submitted to Astrophysical Bulletin (SAO) (12/2007) . Pustilnik, S. A.; Tepliakova, A. L.; Kniazev, A. Y. eprint arXiv:0712.4007, submitted to Astron.Lett (12/2007) . ... Kniazev, A. Y.; Pustilnik, S. A.; Zucker, D. B. eprint arXiv:0707.4285, submitted to MNRAS (07/2007) . ... eprint arXiv:0707.4288 (07/2007) . ...

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• "Structure" publications in 1996 year
• Old "Structure" publications
• "Structure" publications in 2004 year

... Astrophysics Group . ... Galaxy Formation and Evolution . ... Gas heating and outflows driven by accreting supermassive black holes (quasar phase) may affect the evolution of star formation in their host galaxy. ... The starburst galaxy M82, which expels dust and metal enriched gas out of its disk . ... The interstellar medium (ISM) plays a central role in galaxy evolution, providing the fuel for star formation and also hosting the ?fossil record? of the galaxy formation history. ...

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• Galaxy Evolution: Publications submitted
• Research | Matt Bothwell
• Galaxy Evolution: Publications in press

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

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Next: Serendipitous Discovery of a Up: Stellar Astrophysics Previous: ULTRACAM Observations of Subdwarf . Old stars don't just fade away, some come back another day.' ... Although most white dwarfs do indeed fade away to become stellar cinders, gigantic crystals of carbon and oxygen, a few have just enough hydrogen and helium fuel left on their surface to be re-ignited. ... Next: Serendipitous Discovery of a Up: Stellar Astrophysics Previous: ULTRACAM Observations of Subdwarf M.E. Bailey . ...

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• Astronomy Research Themes : Stellar Evolution
• M.D. Smith, Research Astronomer
• Armagh Observatory

... Baffled, you turn to the waiter. ... The waiter smiles. ... Some prefer small stars while others insist that the larger they are the better they are. ... Of course," he adds, sensing your concern, "you are the guest of Chez Stella. ... Immediately you hear the "tock... tock... tock" of the stopwatch, and you gaze deep into the distant star. ... You hadn't noticed before, but it is giving off vast symmetric clouds of what looks like smoke or dust hanging in the space around the beautiful star. ...

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• ASP: Editorial
• ASP: Exploring Invisible Skies
• ASP: Project ASTRO History & Evolution

... Tonight's Sky . ... The Magazine . ... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... Bright planets meet at dusk . ... Astronomy magazine subscribers can read the full article for free. ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

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• stellar evolution | Astronomy.com
• Heat from starbursts influences galaxy evolution | Astronomy.com
• A stellar summer planetary nebula | Astronomy.com

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. ...

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• Radio galaxies
• Relative literature to radio galaxy study

PhD Thesis (PDF) . ... The evolution of stars and gas in galaxies. Observing the atomic neutral hydrogen (HI) 21 cm emission and radio continuum emission of galaxies. ... The goal of research is to quantify the neutral atomic hydrogen (HI) gas content galaxies as they evolve with time. ... Neutral atomic hydrogen gas produces a radio signal that can be used to directly measure the amount of gas present. ... USyd Summer Research Scholarship Report (PDF) . ... Research Topic Write Up (PDF) . ...

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• CHIAKI's Research
• GSAOI Orion Nebula Cluster Science Page
• GSAOI Magellanic Cloud Planetary Nebulae Science Page

Klochkova V.G., Chentsov E.L, Panchuk V.E., Yushkin M.V. Discovery of spectral variability of post-AGB star SAO40039. ... Astron. ... Klochkova V.G., Panchuk V.E., Tavolganskaya N.S., Kovtyukh V.V. Spectroscopy of the virginide V1 (K307) inside the globular cluster M12. ... Klochkova V.G., Panchuk V.E. Spectroscopy of supergiants with IR-excesses: RV Tau type stars. ... Klochkova V.G., Panchuk V.E. Spectroscopy of supergiants with large IR-excesses: pulsating RV Tau type stars. ... Klochkova V.G. Dec. ...

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• Search for distant radio galaxies in SAO
• AGB and Post-AGB Evolution: Structural and Chemical Changes
• My publications

... 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 ). ...

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• Home page of Dmitri Wiebe

... Most Important Journals . Less Popular Astronomical Journals . Physics . Space, Selectial mechanics, .. Russian Journals . ... Astrophysics & Astronomy . ... Astronomical Journal . ... New Astronomy . ... Publications of the Astronomical Society of the Pacific . ... STScI News . Space Telescope Insitute Newsletter . ... Journal of Astronomical Data . ... Journal of High-Energy Physics (mirror in CERN ) [astro, grav, hi-energy .. ... Journal of Experimental and Theoretical Physics . ...

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• My publications
• My activity
• ADS Abstract Service Results

... My primary research interests are the formation and evolution of nuclear star clusters. ... Nuclear star clusters are common objects in nearby galaxies. ... Feldmeier-Krause, A. ; Neumayer, N.; SchУЖdel, R.; Seth, A.; Hilker, M.; de Zeeuw, P. T.; Kuntschner, H.; Walcher, C. J.; LУМtzgendorf, N.; Kissler-Patig, M. Astronomy Astrophysics, accepted, 2015 . ... SchУЖdel, R.; Feldmeier, A. ; Neumayer, N.; Meyer, L.; Yelda, S. Classical and Quantum Gravity, Volume 31, Issue 24, 12/2014 . ... 2014 . ...

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• ESO - Science in Garching
• ESO - E-ELT Science
• ESO - Research Area: STELLAR STRUCTURE AND EVOLUTION

Bizyaev D., "The Argument Against Long Extragagalactic Distance Scale", Astron. ... Soviet Astronomy) 1997. ... Zasov A., Bizyaev D., "An Estimate of the Hubble Constant using a Criterion for Gravitational Stability of Gaseous Discs", Pis'ma v Astron. ... 1996. ... D.Bizyaev, "Types of galaxies", 1996, Zvezdochet, No 11, p.22 (in Russian) . D.Bizyaev, "The Hubble Constant", 1996, Zvezdochet, No 2, p.20 (in Russian) . D.Bizyaev, "Magellanic Clouds", 1995, Zvezdochet, No 6, p.12. (in Russian) . ...

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• Multiwavelength Study of Mira Ceti-Type Variable Stars
• Rudnitskij Georgij M. Home Page