... Bad Astronomy . ... Bitesize Astronomy . ... The next step up are true clusters, called open clusters . Open clusters (sometimes misleadingly called "galactic clusters") are groups of stars ranging in size from a few dozen stars up to tens of thousands. ... The youngest is about 1 or 2 million years old, while the oldest is about 6 or 7 billion years, making it just older than our own solar system. ... So by looking at the stars in the cluster we can tell pretty well how old they are. ...

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. ...

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... College . Senior Lecturer in the Cavendish Laboratory (the Department of Physics of the University of Cambridge ) . Teaching Fellow/Director of Studies in Physics, Churchill College . ... See also this map for more details.) Postal Address (including internal UMS): . ... Cambridge CB3 0HE . ... Churchill College . Cambridge CB3 0DS . Telephone: (01223) 337305 . ... International: +44 1223 337305 . ... International: +44 1223 336154 . ... International: +44 1223 363263 . ...

... Up: Observatory Contacts Previous: General Information . Points of contact from whom information can be obtained are listed below. ... Spectral line: Robert Minchin (rminchin; ext 283), Tapasi Ghosh (tghosh; ext 289), Chris Salter (csalter; ext 281), Rhys Taylor (rhyst; ext 285), . Continuum: Chris Salter (csalter; Ext 281), Robert Minchin (rminchin; ext 283) . Pulsars: Julia Deneva (deneva; ext 315) . VLBI: Tapasi Ghosh (tghosh; ext 289), Chris Salter (csalter; ext 281) . ...

Winer Observatory P.O. Box 797, Sonoita, Arizona 85637-0797, USA . ... Irvin M. Winer . ... Site . ... Winer . ... Site Map . Contact Us . If you would like to discuss options for you to work with Winer, you can: . ... Fill in the form below with your request and we will endeavour to contact you about your enquiry. ... Sonoita . Arizona 85637-0797 . USA . ... P.O. Box 797 . ... 2013 Winer Observatory. ...

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... Contacts . 2012: . ... We refined the fundamental parameters of the components, the orbital periods, and the conditions of photospheric heating of the secondary component by the ultraviolet radiation of the hot component. ... The observations of the star clusters associated with ultra-luminous x-ray sources (ULXs) in four galaxies on the 6-meter and VLT telescopes have shown that all the ULXs are located within 200pc of very young star clusters (younger than 5 million years). ... Archive . ...

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... Radiation mechanisms of astrophysical objects: classics today . ... S.A. Balashev, D.A. Varshalovich, A.V. Ivanchik, V.V. Klimenko , Ioffe Institute, Russian Federation . ... D.P. Barsukov, A.I. Tsygan , Ioffe Institute, Russian Federation . ... A.I. Kopylov, F.G. Kopylova , Special Astrophysical Observatory (SAO RAS), Russian Federation . ... F.G. Kopylova, A.I. Kopylov , Special Astrophysical Observatory (SAO RAS), Russian Federation . ... Conference poster . ... Slide shows and posters . ...

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Multi-Wavelength investigations of the Sun and modern problems of solar activity . SAO RAS . ... 8-87878-46436 (the secretary of director of SAO RAS) . Phones in SPb Branch of SAO RAS: . ... 8-87878-46571 (in SAO RAS) and 8-812-3882346 (in SPb Branch of SAO RAS) . ... Registration form for participating in the All-Russian conference "Multi-Wavelength Investigations of the Sun and modern problems of solar activity" September 28 - October 2, 2006, SAO RAS, Nizhnij Arkhyz, Russia . ... RAS | ...

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... Samara region . ... International relations . Scientific Publications . ... Events International Scientific and Technical Conference "Advanced Information Technologies AIT-2015" . ... Prokhorov S. A. - Doctor in Technical Sciences, Professor, Head of the Department of Information Systems and Technologies (IST) . ... Information Technologies in Transport; . ... Samara State Aerospace University named after academician S. P. Korolev, Department of Information Systems and Technologies. ...

. Expect ~40 clusters, ~16 with z>0.5 . Home | Science Goals | Survey Strategy | Publications | Images & Data | Education/Outreach | Internal Page (password access only) . Date Last Modified: 22 April 2002 . Contact: Webmaster .

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... About ATMoB . ... The Observing Committee is starting an Observing Awards Program to promote observing among the membership of the Amateur Telescope Makers of Boston. ... Participant must be a current member of the Amateur Telescope Makers of Boston . ... To qualify for your Observing Award Certificate, turn in your worksheet and drawings to an ATMoB Observing Committee member or observing@atmob.org . ... This Excel sheet has useful macros. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...