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1. Globular Cluster NGC 2419
... The third is the remote globular star cluster NGC 2419 , at distance of nearly 300,000 light-years. NGC 2419 is sometimes called "the Intergalactic Wanderer", an appropriate title considering that the distance to the Milky Way's satellite galaxy, the Large Magellanic Cloud , is only about 160,000 light-years. Roughly similar to other large globular star clusters like Omega Centauri , NGC 2419 is itself intrinsically bright, but appears faint because it is so far away. ...
[ Сохраненная копия ]  Ссылки http://www.astronet.ru/db/xware/msg/1232937 -- 14.2 Кб -- 23.01.2009
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2. What are typical star-to-star distances in globular clusters compared to
... Gravitational wave search provides insights into galaxy evolution and mergers . ... galaxies . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... What are typical star-to-star distances in globular clusters compared to stellar distances in our region of the galaxy? ... RELATED TOPICS: GLOBULAR CLUSTERS . ... Get instant access to subscriber content on Astronomy.com! ...
[ Сохраненная копия ]  Ссылки http://www.astronomy.com/magazine/ask-astro/2012/03/a-starry-backyard -- 63.1 Кб -- 10.04.2016
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3. Population of Galactic globular clusters, figures
. F IGURE . 10. Dependence of cluster metallicity on (a) Galactocentric distance and (b) distance from the Galactic plane. The filled and open circles correspond to the young and old halos, respectively, and the straight lines are the corresponding rms regressions. The small square shows the old-halo cluster excluded from computations based on a 3 criterion. discussion in the text | privious figure | next figure .
[ Сохраненная копия ]  Ссылки http://ip.rsu.ru/~marsakov/paper5/p5fg10_1.htm -- 2.2 Кб -- 02.02.2007
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4. 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! ...
[ Сохраненная копия ]  Ссылки http://www.armaghplanet.com/blog/m55-a-glorious-globular.html -- 47.4 Кб -- 09.04.2016
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5. SAI Open Star Clusters (SAI OCL) Catalog
... 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. ...
[ Сохраненная копия ]  Ссылки http://ocl.sai.msu.ru/ -- 5.0 Кб -- 09.04.2016
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6. 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 . ...
[ Сохраненная копия ]  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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7. APOD: January 6, 1999 - M6: The Butterfly Cluster
... 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 . ...
[ Сохраненная копия ]  Ссылки http://www.sai.msu.su/apod/ap990106.html -- 4.3 Кб -- 02.10.2012
[ Сохраненная копия ]  Ссылки http://www.arcetri.astro.it/~palla/ANDREAIMMAGINI/ViaLattea/m6_noao_big.html -- 4.2 Кб -- 02.03.2001
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8. Armagh Observatory
... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The projected distance of VFTS 682 to the cluster R136 is 29 pc (for an assumed LMC distance of 50 kpc). ... VFTS 682 is located in an active star-forming region, at a projected distance of 29 pc from the young massive cluster R136 in the Tarantula Nebula of the Large Magellanic Cloud. ... Our aim is to obtain the stellar properties, such as its intrinsic luminosity, and to investigate the origin of VFTS 682. ...
[ Сохраненная копия ]  Ссылки http://star.arm.ac.uk/highlights/2011/576.html -- 6.5 Кб -- 25.05.2011
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9. 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. ...
[ Сохраненная копия ]  Ссылки http://www.astrosociety.org/pubs/mercury/32_03/clusters.html -- 17.5 Кб -- 20.04.2012
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10. http://www.atmob.org/about/observing/awards/files/messier_catalog_2011-02-01.pdf
ATMoB Awards Program - Messier Marathon Worksheet Observer: Date: Instrument(s) Used: Location: Messier Observing Catalog/Worksheet Observing Order 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Messier Number M 77 M 74 M 33 M 31 M 32 M110 M 52 M103 M 76 M 34 M 45 M 79 M 42 M 43 M 78 M1 M 35 M 37 M 36 M 38 M 41 M 93 M 47 M 46 M 50 ...
[ Текст ]  Ссылки http://www.atmob.org/about/observing/awards/files/messier_catalog_2011-02-01.pdf -- 23.7 Кб -- 21.02.2011
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11. Model of clusters
... The most powerful and widely used methods to calculate the scattering matrix of a fractal cluster are based on the coupled dipoles methods (e.g. the Discrete Dipole Approximation, DDA) and the theory of light scattering by a cluster of spherical particles [2-4]. ... At present the procedure of calculation of the scattering matrix is well developed for both an oriented cluster of spherical particles and for chaotically oriented clusters of such