... 2009 August 7 . The Star Clusters of NGC 1313 . Credit: NASA , ESA , Anne Pellerin ( STScI ) . Explanation: Like grains of sand on a cosmic beach, individual stars of barred spiral galaxy NGC 1313 are resolved in this sharp composite from the Hubble Space Telescope's Advanced Camera for Surveys ( ACS ). ... The exploration of stars and clusters in external galaxy NGC 1313 offers clues to star formation and star cluster evolution in our own Milky Way. ... About APOD | ...

Еще в разделе: (Показать все результаты (>8570) - www.sai.msu.su/ )

• APOD: 2001 February 22 - 3C294: Distant X Ray Galaxy Cluster
• APOD: 2014 May 5 - Galaxy Cluster Magnifies Distant Supernova
• APOD: 2009 August 31 - Open Cluster M25

... Kalirai and Harvey Richer of the University of British Columbia led the study, which began as an investigation of a globular star cluster in the Milky Way galaxy known as NGC 6397. ... Within the population of stars and galaxies behind NGC 6397, the Hubble image revealed a large elliptical galaxy that contains several hundred globular clusters. ... In fact, a single giant star in NGC 6397 appears 10 million times brighter than one of the distant globular clusters. ...

Еще в разделе: (Показать все результаты (>14840) - www.stsci.edu/ )

• Simulation of a Distant Cluster of Normal Galaxies
• High Redshift Cluster Projects
• About Our Survey

... January 6, 1999 . M6: The Butterfly Cluster . ... Explanation: To some, the outline of the open cluster of stars M6 resembles a butterfly. ... Like other open clusters , M6 is composed predominantly of young blue stars , although the brightest star is nearly orange. ... Determining the distance to clusters like M6 helps astronomers calibrate the distance scale of the universe. ... About APOD > . ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

Еще в разделе: (Показать все результаты (>6933) - www.arcetri.astro.it/ )

• APOD: July 9, 1999 - NGC 7789: Galactic Star Cluster
• APOD: December 13, 1997 - The Coma Cluster of Galaxies
• APOD: 2001 March 11 - NGC 1818: A Young Globular Cluster

... The Star Clusters of NGC 1313 . ... Credit NASA , ESA , Anne Pellerin ( STScI ) Explanation: Like grains of sand on a cosmic beach, individual stars of barred spiral galaxy NGC 1313 are resolved in this sharp composite from the Hubble Space Telescope's Advanced Camera for Surveys ( ACS ). ... The exploration of stars and clusters in external galaxy NGC 1313 offers clues to star formation and star cluster evolution in our own Milky Way. ... X Ray Stars of Orion . Starburst Cluster in NGC 3603 . ...

Еще в разделе: (Показать все результаты (>162764) - www.astronet.ru/ )

• Астронет > The Star Clusters of NGC 1313
• Journal "Peremennye Zvezdy"
• Астронет > 3C294: Distant X Ray Galaxy Cluster

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. ...

Еще в разделе: (Показать все результаты (>345) - zebu.uoregon.edu/ )

• Astronomy HyperText Book: Stellar Evolution
• The Galaxy Gallery Page IX: Clusters of Galaxies

A Canadian and American team of Astronomers have used the 305-m wide Arecibo radio dish, the world's largest and most sensitive radio telescope, to uncover a dozen new super-fast-spinning pulsars. The team directed their search for these rare and exotic stars by pointing the Arecibo radio telescope towards massive star clusters, called Globular Clusters, orbiting our Milky Way galaxy. ... One of the most exotic residents in the Globular cluster system are the millisecond pulsars. ...

Еще в разделе: (Показать все результаты (>2770) - www.naic.edu/ )

... ESO, the European Southern Observatory . ... ESO's Governing Bodies . ... Travel to ESO Headquarters . ... ESO Acronyms . ... Survey Telescopes . ... Galaxies . Galaxy Clusters . ... View shopping cart . ... This distant cluster of galaxies was discovered by the XXL survey. ... The distances to individual galaxies were found using ESO and other telescopes, to allow a three-dimensional view of the distribution of galaxy clusters to be determined. ... Early Universe : Galaxy : Grouping : Cluster . ...

Еще в разделе: (Показать все результаты (>49017) - www.eso.org/ )

• Visible light view of a distant galaxy cluster discovered in the XXL survey
• The Unexpected Past of a Dwarf Galaxy | ESO
• Distant Cluster MS 1008.1-1224 | ESO

... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

Еще в разделе: (Показать все результаты (>222) - ocl.sai.msu.ru/ )

• SAI OCL Catalog Description

This image from the NASA/ESA Hubble Space Telescope shows NGC 6388, a dynamically middle-aged globular cluster in the Milky Way. ... A new study using Hubble data has discovered that globular clusters of the same age can have dramatically different distributions of blue straggler stars within them, suggesting that clusters can age at substantially different rates. Credit: NASA/ESA/F. Ferraro (University of Bologna) ...

Еще в разделе: (Показать все результаты (>6610) - www.astronomy.com/ )

• Hubble spots rare gravitational arc from distant, hefty galaxy cluster |
• Subaru Telescope discovers the most distant protocluster of galaxies |
• When galaxy clusters collide | Astronomy.com

... We have made observations of the Perseus cluster with the Westerbork Telescope at 610 MHz. ... Several newly detected sources are identified with cluster galaxies. ... No evidence is found for the existence of the previously reported ~ 65'x25' cluster halo, 3C 84B. Key words: radio galaxies - clusters - tailed radio sources buoyancy The Perseus Cluster of galaxies is one of the most fascinating systems accessible to extragalactic astronomers. ...

Еще в разделе: (Показать все результаты (>1557) - www.sao.ru/ )

• A 1400-MHz Survey of 1478 Abell Clusters of Galaxies
• Density Determination
• Nearby Galaxies Catalogue (NBG)

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Portrait of Sir William Herschel (1738-1822) Royal Astronomical Society . Probably the most famous astronomer of the 18th century, Sir William Herschel discovered, in addition to the planet Uranus, many new nebulae, clusters of stars and binary stars. ... Other Herschel Family Portraits . Mirror by Herschel . Return to A Short History of Armagh Observatory . Last Revised: 2009 November 23rd . ...

Еще в разделе: (Показать все результаты (>2655) - star.arm.ac.uk/ )

• IAJ: News Views

... We found that 10 metal-poor globular clusters are greately distinguished for anomalously small masses on the "destruction rate-mass" plain. As it turned out, these poor clusters, situated 15 kpc farther from the Galactic centre, are somewhat younger than the bulk of the metal-poor globulars, and have anomalously red horizontal branches. ... At the same time, deficiency of distant massive clusters is noticeable with increasing distance from the galactic centre. ...

Еще в разделе: (Показать все результаты (>101) - ip.rsu.ru/ )

• Population of Galactic globular clusters, figures
• Vladimir Marsakov Publication List
• T.Borkova, V.Marsakov, Distant globular clusters with anomalously small masses

... Archives . ... my first AAS. ... I was questioned by two attendees, acquainted before the AAS, if I can suggest them clustering methods relevant to their projects. ... classification vs. clustering or supervised learning vs. unsupervised learning : the former terms from the pairs indicate the fact that the scientist already knows types of objects in his hands. ... Tags: Classification , clustering , cosmology , spatial statistics , supervised learning , test , unsupervised learning . ...

Еще в разделе: (Показать все результаты (>3680) - hea-www.harvard.edu/ )

• The AstroStat Slog clusters
• Southern SHARC survey
• The AstroStat Slog LF

... Главная . ... Новости . ... Проекты . Любителям астрономии . Проект ISON . ... Подробнее . ... Категория: Новости проекта ISON . ... Метки: Космический мусор ,љ Астероиды ,љ Гамма-всплески ,љ Любителям астрономии ,љ Кометы љ . ... Метки: Космический мусор ,љ Астероиды ,љ Любителям астрономии љ . ... Новости обсерваторий проекта] - Обсерватория Кубанского государственного университета от Иванов А - 09.04.2016 11:08:49 . ... 1999-2013 Copyright "Астрономия и Телескопостроение" . ...

Еще в разделе: (Показать все результаты (>3) - www.astronomer.ru/ )

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

Еще в разделе: (Показать все результаты (>338) - hea.iki.rssi.ru/ )

• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN

In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...

Еще в разделе: (Показать все результаты (>1384) - www.astrosociety.org/ )

• ASP: Beacons in the Gloom
• ASP: An Ancient Universe - Changes in Stars
• ASP: Science Fiction Stories with Good Astronomy & Physics

... Bad Astronomy . ... Mad Science . ... Site Info . ... Public Talks . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Who is this guy who calls himself "The Bad Astronomer?" ... First, yes, I am a real live astronomer (when people ask me what astronomers do, I tell them "They astronom !" ... These are emitted by powerful objects like black holes, exploding stars, and super-dense neutrons stars. ... Finally, am I really a bad astronomer? ... 2008 Phil Plait. ...

Еще в разделе: (Показать все результаты (>336) - www.badastronomy.com/ )

• Phil Plait's Bad Astronomy: Bitesize Astronomy

... 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. ...

Еще в разделе: (Показать все результаты (>623) - www.aaa.org/ )

• Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers ?
• Deep Sky Images by Joe DiNapoli ? Amateur Astronomers Association of New York
• Lecture Series 2014-2015 ? Amateur Astronomers Association of New York

Astronotes Armagh Planetarium's Stellar Blog! ... Comets and Asteroids . ... Image credit:ESO/J.Emerson/VISTA. ... However others are less pessimistic and it has even been claimed that the mysterious ?Wow! signal? received in 1977 originated from the direction M55.б  Sadly, this still unexplained pulse of radio energy originated from a location rather to the northwest of M55 so I doubt if the source was this cluster (if indeed the signal was genuinely of extraterrestrial origin). ... Mysterious Wow! ...

Еще в разделе: (Показать все результаты (>2811) - www.armaghplanet.com/ )

• Kepler 36b and c: Too Close for Comfort | Astronotes
• Omega Centauri: globular cluster of 300,000 stars | Astronotes
• Hubble Space Telescope sees into Omega Centauri's future | Astronotes

Stellar models are one of the backbones of modern astronomy. ... Here we review the evolution and importance of core helium burning stars and then discuss a range of methods, both theoretical and observational, that we are using to advance the models. Known observationally as SdB, red clump, horizontal branch, and second clump stars, core helium burning stars are numerous and relatively luminous and therefore contribute disproportionately to distant/extragalactic emission. ...

Еще в разделе: (Показать все результаты (>690) - www.mso.anu.edu.au/ )

• Dougal Mackey - Conference Proceedings
• Julie Banfield | Astronomer
• GSAOI Open Cluster Science Page