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1. Hubble s Messier 5
... Credit Copyright: HST , ESA , NASA Explanation: "Beautiful Nebula discovered between the Balance [Libra] the Serpent [Serpens] ..." begins the description of the 5th entry in 18th century astronomer Charles Messier's famous catalog of nebulae and star clusters. Though it appeared to Messier to be fuzzy and round and without stars, Messier 5 (M5) is now known to be a globular star cluster, 100,000 stars or more, bound by gravity and packed into a region around 165 light-years in diameter. ...
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Ссылки http://www.astronet.ru/db/xware/msg/apod/2014-04-25 -- 15.4 Кб -- 26.04.2014
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2. APOD: 2015 June 20 - Hubble's Messier 5
... 2015 June 20 . Hubble's Messier 5 . Image Credit: HST , ESA , NASA . Explanation: "Beautiful Nebula discovered between the Balance [Libra] the Serpent [Serpens] ..." begins the description of the 5th entry in 18th century astronomer Charles Messier's famous catalog of nebulae and star clusters. ... Even close to its dense core at the left, the cluster's aging red and blue giant stars and rejuvenated blue stragglers stand out in yellow and blue hues in the sharp color image. ...
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Ссылки http://www.sai.msu.su/apod/ap150620.html -- 5.5 Кб -- 10.04.2016
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3. http://www.stsci.edu/~jkalirai/PressStarClustersUCSC.pdf
... 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. ...
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Ссылки http://www.stsci.edu/~jkalirai/PressStarClustersUCSC.pdf -- 131.4 Кб -- 19.09.2008
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4. Astronomy HyperText Book: Stellar Clusters
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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Ссылки http://zebu.uoregon.edu/textbook/sc.html -- 3.5 Кб -- 23.01.1998
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5. Phil Plait's Bad Astronomy: Bitesize Astronomy
... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...
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Ссылки http://www.badastronomy.com/bitesize/jetplane.html -- 21.9 Кб -- 09.04.2016
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6. Sources in Abell clusters
[ CATS home ] [ Back to CATS list ] [ ftp ] . 1986USydn.T00J....Reynolds
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Ссылки http://www.sao.ru/cats/doc/CL_Reynolds.html -- 8.1 Кб -- 18.03.2015
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7. APOD: 2000 August 4 - M15: Dense Globular Star Cluster
... 2000 August 4 . M15: Dense Globular Star Cluster . ... In fact, only 40,000 light-years away in the constellation Pegasus, M15 is one of the most densely packed globular star clusters in our Milky Way Galaxy. This stunning Hubble Space Telescope image of M15 shows thousands of individual stars across the central 10 or so light-years of the cluster, also cataloged as NGC 7078. ... Globular star clusters harbor from a hundred thousand up to a million stars and roam the Milky Way halo. ...
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Ссылки http://www.sai.msu.su/apod/ap000804.html -- 5.0 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ViaLattea/m15_hstheritage_big1.html -- 4.9 Кб -- 02.03.2001
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[ Сохраненная копия ] Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ViaLattea/m15_hstheritage_big1.html -- 4.9 Кб -- 02.03.2001
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8. M55 globular cluster seen by ESO | Astronotes
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! ...
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Ссылки http://www.armaghplanet.com/blog/m55-a-glorious-globular.html -- 47.4 Кб -- 09.04.2016
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9. SAI OCL Catalog Virtual Observatory
... Structure of Data . ... Catalog . ... The SAI OCL Catalog site provides several VO-enabled modes of operation: . VO-enabled catalog data analysis from a browser . ... Endpoint URL is http://ocl.sai.msu.ru/catalog/conesearch/ . ... VO-enabled catalog analysis from a browser . Presently, this recipe works with Firefox (Windows, MacOS, Linux), Internet Explorer (Windows) and Opera (Windows) browsers with Java plugin 1.6 installed. ... Main TOPCAT window with SAI OCL catalog loaded will appear. ...
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10. Pulsar Highlights - A Dozen new MSPs in Globular Clusters
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. ...
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Ссылки http://www.naic.edu/~pulsar/highlights/highlights_AOGC.shtml -- 7.6 Кб -- 03.02.2013
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11. Blue Straggler Stars
... BLUE STRAGGLER STARS are unusually hot and bright stars found in the cores of ancient star clusters known as globulars. ... BACKGROUND (from wikipedia): Blue straggler stars are stars in open or globular clusters that are hotter and bluer than other cluster stars having the same luminosity. ... There is evidence in favor of this view, notably that blue straggler stars appear to be much more common in dense regions of clusters, especially in the cores of globular clusters. ...
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Ссылки http://www.mso.anu.edu.au/~jerjen/researchprojects/bluestraggler/bluestraggler.html -- 9.1 Кб -- 02.10.2012
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12. ASP: Big Clusters, Tiny Galaxies
home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...
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Ссылки http://www.astrosociety.org/pubs/mercury/32_03/clusters.html -- 17.5 Кб -- 20.04.2012
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13. http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B428E8A98-7EBF-463C-BF9C-866153AC6749%7D
An eight-billion-year-old cluster of stars 13,000 light-years from Earth, called NGC 6791, can be seen in the image. ... This particular cluster is called an open cluster, because the stars are loosely bound and have started to spread out from each other. The area pictured is 0.2 percent of Kepler's full field of view, and shows hundreds of stars in the constellation Lyra. The image has been color-coded so that brighter stars appear white, and fainter stars, red. ...
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Ссылки http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7B428E8A98-7EBF-463C-BF9C-866153AC6749%7D -- 4.0 Кб -- 10.04.2016
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14. The AstroStat Slog Blog Archive my first AAS. IV. clustering
... 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 . ...
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Ссылки http://hea-www.harvard.edu/AstroStat/slog/groundtruth.info/AstroStat/slog/2008/my-first-aas-iv-clustering/index.html -- 24.2 Кб -- 01.03.2014
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15. Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or
... Australia Telescope Compact Array . ... Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies? ... We suggest that these objects are either super-massive star clusters (intra-cluster globular clusters or tidally stripped nuclei of dwarf galaxies) or a new type of low-luminosity compact elliptical dwarf (``M32-type'') galaxy. ... Keywords: galaxies: star clusters -- galaxies: dwarf -- galaxies: formation . ... Properties of the compact objects ...
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Ссылки http://www.atnf.csiro.au/pasa/17_3/drinkwater/paper/index.html -- 53.2 Кб -- 08.04.2016
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16. Главная - Астрономия и Телескопостроение
... 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" . ...
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17. Vladimir Marsakov Abstracts
... The overall globular cluster population is divided by gap in the metallicity function at [Fe/H]=-1.0 into two discrete groups with well-defined maxima at [Fe/H]=-1.60?0.03 dex, and -0.60?0.04 dex. ... Clusters with extremely blue horizontal branches occupy a spherical volume of radius ~ 9 kpc, have high rotational velocities ( V rot =77?33 km/s), have substantial and equal negative radial and vertical metallicity gradients, and are, on average, the oldest group (the old-halo subsystem). ...
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Ссылки http://ip.rsu.ru/~marsakov/abs/abst29.htm -- 9.2 Кб -- 02.02.2007
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18. http://mavr.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt
Results from 6m telescope observations of globular clusters in dwarf galaxies Sharina M. We consider properties of globular clusters in dwarf galaxies observed with the multi-slit unit of the SCORPIO spectrograph at the SAO 6m telescope. ... Studying GCs in dwarf galaxies at the faintest end of the galaxy luminosity function provides valuable information for a better understanding of galaxy evolution and evolutionary connection between globular clusters and nuclei of galaxies. ...
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Ссылки http://mavr.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt -- 2.3 Кб -- 16.05.2007
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt -- 2.3 Кб -- 24.02.2010
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt -- 2.3 Кб -- 24.02.2010
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[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt -- 2.3 Кб -- 24.02.2010
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/katya/CosmosPh/en/Abstract_Sharina.txt -- 2.3 Кб -- 24.02.2010
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19. http://www.eso.org/public/news/eso1302/kids/
... Astronomers experienced the same thing, only this time they photographed a dwarf galaxy , and a globular cluster blocked the view. ... A globular cluster is a collection of old stars that orbits a galaxy. ... This particular globular cluster is orbiting the Milky Way our home galaxy. ... Light travels faster than anything in the world, so you could say that this cluster is enormous! ... Astronomers are lucky that the globular cluster insisted on being on camera, as they can now study it in detail. ...
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Ссылки http://www.eso.org/public/news/eso1302/kids/ -- 10.4 Кб -- 11.04.2016
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20. MAO NASU :: Topic: 1st Announcement IAU Symposium 312 Star Clusters and Black
... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... SUBJECT: 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. 25-29, 2014 . ... which will be held in Beijing, P.R. China, from August 25-29, 2014, hosted by Chinese Academy of Sciences . ... China), . ... 1st Announcement IAU Symposium 312 Star Clusters and Black Holes Across Cosmic Time, Beijing, China, Aug. ...
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Ссылки http://www.mao.kiev.ua/index.php/en/forum/info/95-1st-announcement-iau-symposium-312-star-clusters-and-black-holes-across-cosmic-time-beijing-china-aug-25-29-2014 -- 24.6 Кб -- 11.04.2016
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