... Tonight's Sky . ... The Magazine . News . Observing . ... 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 . ... stellar evolution . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... 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. ...

... 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. ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members . ... Science Users Information . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... ESO Science Newsletter . ... ESO astronomers often are working on scientific programmes and data sets that are suited for PhD theses. This page gives an overview over what is currently offered by Faculty astronomers. ... Thesis topic . ...

Welcome to the Starburst and Galaxy Evolution website.

... Galaxy Evolution home . ... Regulating the ISM and star formation . Cosmological evolution of star-forming galaxies . ... Local Information . ... In order to investigate the cosmological evolution of star-forming galaxies it is essential that we understand the physics which controls the evolution and regulation of star formation in the ISM. ... We use a combined observational and numerical approach to study interacting and merging galaxies in the local Universe. ...

... 18.02.2011 . ... Credit Copyright: J-P Mets vainio ( Astro Anarchy ) Explanation: Cast off by dying sunlike stars, planetary nebulae are a brief but glorious final phase of stellar evolution. ... Shining in the cosmic night, their simple symmetries are fascinating and have inspired this planetary nebula poster project . ... Publications with keywords: planetary nebula - stellar evolution - gas . Publications with words: planetary nebula - stellar evolution - gas . ... Planetary Nebula PK 164 31 . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2011 February 18 . Planetary Nebula Project . ... Explanation: Cast off by dying sunlike stars, planetary nebulae are a brief but glorious final phase of stellar evolution. ... Shining in the cosmic night, their simple symmetries are fascinating and have inspired this planetary nebula poster project . ... About APOD | ...

Next: UNSOLVED PROBLEMS Up: OTHER HYDROGEN-DEFICIENT STARS Previous: Carbon stars . During the past century, three stars have been observed as being both hot subdwarfs and RCB stars at different times. V605Aql is now the hydrogen-deficient central star of a planetary nebula (Abell58). ... In 1996, an unremarkable faint blue star suddenly brightened and within three years had become a very cool and luminous carbon star, now known as Sakurai's Object or V4334Sgr ([ Nakano et al. ... 1999 ]). ...

... More recently, I have been concerned with observing masers located in the circumstellar shells generated by red giant stars in their mass-loss phase, and in what we can therefore learn about the late stages of stellar evolution. 100 mJy are now undetectable after ~12 years, aka the DEATH of an OH/IR star or its cyclical evolution back to a Mira variable. ... I find that this momentum flux is sufficient to support the largest observed rates of AGB mass-loss. last updated: 14 January 2015 . ...

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. ...

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) . ...

... STScI-PR98-15 HUBBLE REVEALS DETAILS OF A NEWLY BORN PLANETARY NEBULA Astronomers have caught a peek at a rare moment in the final stages of a star's life: a ballooning shroud of gas cast off by a dying star flicking on its stellar light bulb. NASA's Hubble Space Telescope has captured the unveiling of the Stingray nebula (Hen-1357), the youngest known planetary nebula. ... A fast wind - material propelled outward from the hot central star -- compresses the gas and pushes the gas bubble outward. ...

... 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. ...

... 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 ....

home education > family astro . SEARCH ASP SITE: Match ALL words Match ANY word . ... Family ASTRO Resource Guides . ... The Moon . ... This guide -- for educators, amateur astronomers, and everyone who would like to know more about the Earth's only natural satellite -- covers our scientific understanding of the Moon as a world, the appearance of the Moon in our skies, and tips for observing the Moon through binoculars or small telescopes. ... http://www.nasa.gov/worldbook/moon_worldbook.html . ...

Yu.V.Milanova, A.F.Kholtygin . Evolution of Elemental Abundances in Planetary Nebulae . Astronomy Letters, 32 , 557-565 ( 2006 ) . ... The theoretical dependences of the C and N abundances on Mini have been found to correspond to the observed ones. ... We have derived the relation between the abundances of the elements under consideration in planetary nebulae and the masses of their central stars. This relation is used to construct the mass function for the nuclei of planetary nebulae. ...

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