Astronomy Picture of the Day . ... Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away along the southern border of the constellation Gemini . ... An unrelated, bright, foreground star is near center in this close-up, telescopic view , while the Medusa's transforming central star is actually the dimmer star below center and toward the right-hand part of the frame. ... Publications with keywords: planetary nebula . ... NGC 3132: The Eight Burst Nebula . ...

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• Journal "Peremennye Zvezdy"

We present the discovery of debris systems around three Sun-like stars based on observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``The Formation and Evolution of Planetary Systems'' (FEPS). We also confirm the presence of debris around two other stars. ... ADS Citation Query . citations = 55 . citations vs. year [year,citations] . ...

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

... 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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• Astronomy HyperText Book

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2015 June 12 . The Medusa Nebula . ... An unrelated, bright, foreground star is near center in this close-up, telescopic view , while the Medusa's transforming central star is actually the dimmer star below center and toward the right-hand part of the frame . ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

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• APOD: 2007 March 5 - Illusion and Evolution in Galaxy Cluster Abell 2667
• APOD: 2007 November 23 - The Medusa Nebula
• APOD: 2012 October 25 - The Medusa 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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• PM Survey Science Issues
• Radio Source Evolution Unified Schemes
• ATNF Colloquium

... Laboratory "Structure" was created in 1992 from the temporary scientific group formed in 1988 in SAO RAS. In December 2003 it was transformed into group of Physics and Evolution of Galaxies , which enters into new Laboratory of Extragalactic ASTROPHYSICS and COSMOLOGY. ... Kniazev A.Y. senior researcher, associated foreign member . Kniazeva T.F. junior researcher, associated foreign member . ... Lipovetsky Valentin A. (1945-1996) former leader of the Laboratory . ...

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... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Studying the Cosmological Evolution of Galaxy Clusters with (Sub-)mm Observations . ... Data Handling and Products . ... ESO Data . ... Studies of the Planck data set with optical and sub-mm follow-up observations give new insights about the early assembly of the first clusters, and the later evolution of their gas content as well as of their population of star-forming galaxies. ...

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• ESO - Thesis Topic: Evolution of Solar-type Stars using ALMA
• ESO - Thesis Topic: ALMACAL: the evolution of the molecular gas in galaxies
• ESO - PhD Thesis Topics offered by ESO Faculty Members

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

... STScI-PRC00-25 A DYING STAR IN GLOBULAR CLUSTER M15 The globular cluster Messier 15 is shown in this color image obtained with the NASA Hubble Space Telescope's Wide Field Planetary Camera 2 (WFPC2). ... Known as Kuestner 648, this was the first planetary nebula to be identified in a globular cluster. ... At the present time, the most massive stars remaining in M15 have about 80 percent of the mass of our Sun, a fact that makes the existence of a planetary nebula like K 648 something of a mystery. ...

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• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/Hen.txt
• http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ISM/spirograph.txt
• Arcetri Star-Formation Group Publications

Next: M.E. Bailey, Director Up: Research Previous: C.S. Jeffery, Research Astronomer Contents . Dr Michael Smith has focused mainly on the earliest stages of stellar evolution: the processes leading to star formation from an initially unstable, collapsing cloud of gas, and the energetic outflows -- jets and winds -- associated with the formation and early evolution of protostars and pre-main-sequence stellar objects. ... Spectacular jets of molecules, however, betray its presence. ...

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• Astronomy Research Themes : Stellar Evolution
• Armagh Observatory
• Talks by Armagh Observatory Staff, 1998

... In this Section we examine evolution of the number of binary X-ray sources in an arbitrary galaxy. ... However, the problem with its X-ray radiation spectrum remains unsolved because no objects of this type have been observed so far. ... The total X-ray luminosity from different types of objects is traced separately at any instant. First, we calculated the evolution of the X-ray luminosity   assuming a delta-function (instantaneous) shape for the star formation rate. ...

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• Evolution of the Double Neutron Star Merging Rate andthe Cosmological Origin of
• Evolution of Supernova Explosion Rates in the Universe
• Introduction

... Galaxy Evolution home . ... Regulating the ISM and star formation . Cosmological evolution of star-forming galaxies . The origin and evolution of radio sources . Radio sources and their environments . ... Observations of the local Universe clearly demonstrate that very active star formation phases (starbursts) are often associated with interacting and merging galaxies and that in these systems much of the short wavelength emission is absorbed by dust and re-emitted in the IR. ...

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• Galaxy Evolution: Radio sources and their environments
• Galaxy Evolution: Calendar
• Galaxy Evolution: EVN Deadline

... AA(Max-Planck-Institut f r Radioastronomie, 53121 Bonn, Germany), AB(Max-Planck-Institut f r Radioastronomie, 53121 Bonn, Germany), AC(Max-Planck-Institut f r Radioastronomie, 53121 Bonn, Germany), AD(Special Astrophysical Observatory, Nizhnij Arkhyz, 357147, Russia), AE(Stockholm Observatory, 13336 Saltsj baden, Sweden) . ... 241B Structural and chemical changes during the AGB and post-AGB evolution are discussed with respect to two recent observational and theoretical findings. ... Abstract Text ....

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• Laboratory for the Stellar Magnetism Study of SAO of the RAS - Physics and
• Introduction
• About laboratory

... 320, P L45-L48 (1997). Abstract . ... 320, P L49-L52 (1997). ... 320, P L53-L56 (1997). ... 320, P L57-L59 (1997). ... 320, P 685-695 (1997). ... 320, P 696-704 (1997). ... 320, P 705-716 (1997). ... 320, P 717-730 (1997). ... 320, P 731-745 (1997). ... 320, P 746-756 (1997). ... 320, P 757-775 (1997). ... 320, P 776-782 (1997). ... 320, P 783-786 (1997). ... 320, P 787-790 (1997). ... 320, P 791-798 (1997). ... 320, P 799-810 (1997). ... 320, P 811-822 (1997). ... helpdesk@link.springer.de . ...

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• Springer LINK:A&A-EE: Table of Contents Volume 318 Number 1 (1997)
• Springer LINK:A&A-EE: Table of Contents Volume 322 Number 2 (1997)
• Эволюция звезд (Stellar evolution)

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

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• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York
• Lecture Series 2013-2014 ? Amateur Astronomers Association of New York
• Lectures ? Amateur Astronomers Association of New York

... It is dark. ... Even without the structures' intense glare, your eyes take a moment to adjust to the vast scatterings of stars dazzling as diamonds on a sea of black velvet. ... A waiter you hadn't noticed puts a menu on the table. ... Oui," the waiter responds, "It is the stellar wind. ... You should be able to see them all in another moment -- the big one first and then the others. ... A second later a gap appears and, just as the waiter predicted, you see a brilliant blue white star. ...

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• ASP: Project ASTRO History & Evolution
• ASP: Cosmology: The Origin, Evolution & Ultimate Fate of the Universe
• ASP: Education Newswire

... 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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• Galaxy chemical evolution: Links
• Galaxy chemical evolution
• Milanova Kholtygin, PAZH (2006)

... Space Research Institute . Russian Academy of Sciences . ... Moscow State University, Department of Mechanics and Mathematics - Dr.Sc (Doctor of Physical and Mathematical Sciences) - Advanced Degree in Space Dynamics, 1991. Thesis Title: "Spacecraft Attitude Dynamics and Determination" . ... Spacecraft Attitude Dynamics Attitude Determination . ... Spacecraft attitude determination taking into account gravity-gradient and magnetic torque, Cosmic research, (translation from Russian. ...

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• IKI IPL home page
• Russian HEND for NASA mission 2001 MARS ODYSSEY

EUROPEAN ASSOCIATION FOR ASTRONOMY EDUCATION . ... c/o European Southern Observatory , Karl Schwarzschild Strasse 2, DE-85748 Garching bei M nchen, Germany . The purpose of the Association is to improve and promote astronomical education at all levels in all institutions involved in teaching astronomy in Europe. NATIONAL EAAE HOME PAGES . ... Germany . ... Some Important E-mail Addresses : . ... Michael Reichen ( Editor ), michael.reichen@obs.unige.ch . ...

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• The Second Euro-Asian Congress of Astronomy Teachers

... Tonight's Sky . ... Observing . ... Sky this Month . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... The Golden Earring, planetary nebula NGC 2867, and barred spiral galaxy NGC 3109 . ... Astronomy for Kids . ... European Planetary Science Congress . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

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• galaxy evolution | Astronomy.com
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