Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

Astronomy Picture of the Day . ... B.J. Mochejska , J. Kaluzny ( CAMK ), 1m Swope Telescope Explanation: This color "picture" of globular star cluster M55 may not look like any star cluster you've ever seen. ... In the picture, a Color Magnitude Diagram (CMD), M55's individual stars are represented as dots whose color indicates relative temperature, red (cool) to blue (hot). ... Publications with keywords: color - magnitude - diagram - cmd - M 55 - star - stellar evolution . ...

... 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. ...

... 2000, ApJ, 537, L49 . ... F. Palla . Invited Talk at the IAU Symposium 200 "The formation of binary stars" eds. R.D. Mathieu and H. Zinnecker (ASP Conf. Ser.) in press . Optical follow-up of ROSAT discovered candidate members of the open cluster Coma Berenices . ... 2000, A , in press . ... 2000, ApJ, in press . ... 2000, ApJ, in press (Sept. ... 2000, ApJ Lett., in press . ... Click to examine publications from other years . ... Star Formation Group . ... Arcetri Home Page . ...

... 2002 October 6 . The Lagoon Nebula in Three Colors . ... Explanation: The bright Lagoon Nebula is home to a diverse array of astronomical objects. Particularly interesting sources include a bright open cluster of stars and several energetic star-forming regions . When viewed by eye, cluster light is dominated by an overall red glow that is caused by luminous hydrogen gas , while the dark filaments are caused by absorption by dense lanes of dust . ... About APOD | ...

... (Center for Astronomical Research/Observatory of Lyon, France), and J.-P. Kneib (Astrophysical Laboratory of Marseille, France) Sunday , October 6, 2013 · · · · · · · The Emerging Picture of Cluster Galaxy Evolution Mancone+10 Cluster cores in the local Universe are generally red and dead. increased star forming fraction toward cluster cores at z 1.4 (e +10, Tran+10, Hayashi+11, Fassbender+11) .g. Hilton m* ... Trends depend on galaxy mass and type. ... Rapid growth of red sequence?...

Our early publications since 1990 till 1995 year . ... 7.Yu.I.Izotov, N.G.Guseva, V.A.Lipovetsky, A.Yu.Kniazev, J.A. Stepanian, 1990, Nature, 343, 238, Unusual low heavy-element abundance found in the blue compact galaxy SBS 0335-052 8.Yu.I.Izotov, N.G.Guseva, V.A.Lipovetsky, A.Yu,Kniazev, J.A.Stepanian, 1990, Physical Processes in Fragmentation and Star Formation, 1990, Kluwer Academic Publisher, p.235-240. ... New blue compact dwarf galaxies with low heavy-element abundances. ... 1993. ...

... I am an astrophysicist studying stellar evolution and stellar populations through the use of computational models. ... The origins of abundance variations in globular clusters . Galaxy formation as traced by globular clusters . ... The ACS Survey of Galactic Globular Clusters . ... Globular Clusters in the Outer Galactic Halo: New Hubble Space Telescope/Advanced Camera for Surveys Imaging of Six Globular Clusters and the Galactic Globular Cluster Age-metallicity Relation . ... 2011 Aaron Dotter | ...

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2002 > cosmology2002 . ... Observing with ESO Telescopes . ... Public Surveys . ... Data Handling and Products . ... Science Data Products Forum . ... ESO Data . ... ESO Data Access Policy . ... Review: Weak Lensing . ... Tangential alignement of galaxies in a STIS Parallel shear survey field: a new dark lens candidate . ... Poster: . ... New Clues on clustering evolution from the K20 and FIRES surveys . ... data ...

... Long secondary periods in AGB stars: an investigation of their origin . Wood P.R., Olivier E.A., Kawaler, S.D. 2004, ApJ, 604, April 1. ... Wood P.R. 2003, in "Mass-losing Pulsating Stars and their Circumstellar Matter", eds. Y. Nakada M. Honma (Kluwer) . MSX sources in the LMC: Dust-enshrouded AGB stars, post-AGB stars and PN . ... Wood P.R., Cohen M. 2001, in "Post-AGB Objects as a Phase of Stellar Evolution", eds. R. Szczerba and S. K. Gorny, ASSL, 265, 71 . ... Wood P.R. 2000, in IAU Coll. ...

... 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. ...

... G. A Leikin, A. N. Sanovich. Sternberg Astronomical Institute, Moscow 119899, Russia. Brown University - Vernadsky Institute Microsymposium 34, October 8-9, 2001, Moscow, Russia . ... G. A. Leikin and A. N. Sanovich, Sternberg State Astronomical Institute, Moscow State University, . ... Brown University - Vernadsky Institute Microsymposium 38, October 27-29, 2003, Moscow, Russia . ... Sternberg State Astronomical Institute, Moscow, State University, 119992, Moscow, Universitetskij prosp. ...

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. ...

... Moscow, Russia . ... March-October 2000 . ... Gusev A.S. Multicolor CCD Photometry of Six Lenticular and Spiral Galaxies. ... Gusev A.S., Park M.-G. Structure and stellar population of ringed barred galaxy NGC 2336 // Astronomy and Astrophysics, 2003, V.410, P.117-129. ... Gusev A.S. Photometric Properties of Bars in Galaxies // Astronomy Reports, 2000, V.44, N9, P.579-591. ... Gusev A.S. BVRI CCD Photometry of Pecular Galaxies NGC 5605 and NGC 5665 // Astronomy Reports, 2000, V.44, N9, P.569-578. ...

Russian Version ( KOI-8 , Win ) . Institute of Astronomy of the RAS . ... Self-consistent simulation of chemical and dynamical evolution of protostellar clouds . Chemical evolution of galaxies . ... Soon after my birth I was moved (I was not able to move on my own in those times, you know) in Novouljanovsk, small town to the south of Uljanovsk. ... Since that time my life and work is bound to the Institute of Astronomy of the Russian Academy of Sciences. ... Back to the INASAN home page . ...

home education > activities . ... Quick math activity that asks students to calculate scale models of a binary star system with a black hole in it. [h] . ... Students use a radiometer and a light bulb with a dimmer switch to make connections between the temperature, color, and radiation output of a star. ... This demonstration, similar to the above, from the Exploratorium Snack-book of science activities, lets students demonstrate how molecules scatter light and change the colors of the beam. [m,h] . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Sky this Month . ... 50 Greatest Mysteries . ... Star Atlas . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Get to Know the Night Sky . ... How to get great star colors . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine ...

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Other Galaxies . ... Space Flight . ... Posted on October 4, 2010 | 1 Comment Gorgeous! ... Continue Reading.. ... Posted on September 24, 2010 | ... 1 Comment That amazing instrument, the Hubble Space Telescope (HST), has just celebrated its twentieth anniversary since it was placed in orbit. ... No Comments Dark matter and its part in the evolution of the Universe is revealed by new data collected by the Hubble Space Telescope. ...

... D. J. Burke and J. Patrick Henry . The Astrophysical Journal, submitted. ... S. Brough, W. J. Couch, C. A. Collins, T. Jarrett, D. J. Burke , R. G. Mann . ... D. A. Wake, C. A. Collins, R. C. Nichol, L. R. Jones, D. J. Burke . ... R. Sadat, A. Blanchard, S. C. Vauclair, D. H. Lumb, J. Bartlett, A. K. Romer, J.-P. Bernard, M. Boer, P. Marty, J. Nevalainen, D. J. Burke , C. A. Collins, R. C. Nichol, . ... S. Majerowicz, D. M. Neumann, A. K. Romer, R. C. Nichol, D. J. Burke , C. A. Collins . ...

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...