... 2010 October 14 . Clusters, Hartley, and the Heart . ... Explanation: An alluring Comet Hartley 2 cruised through planet Earth's night sky on October 8, passing within about a Full Moon's width of the famous double star cluster in Perseus. ... To capture the cosmic moment, a relatively short 5 minute exposure was used to freeze the moving comet in place, but a longer exposure with a narrow-band filter was included in the central and right hand frames. ... About APOD | ...

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• APOD: 2001 October 24 - The Matter of Galaxy Clusters
• APOD: 2010 October 26 - Comet Hartley Passes a Double Star Cluster
• APOD: 2005 October 11 - NGC 869 and NGC 884: A Double Open Cluster

... The Double Cluster . Also known as Caldwell 14, the naked-eye open clusters NGC 884 (Chi Persei) and NGC 869 (h Persei) are 7600 and 6800 light-years away, respectively. ... Each cluster has over 300 blue-white super-giant stars with a total of approximately 13,000 to 20,000 objects with ages ranging from 5.6 million to 3.2 milion years old. Takahashi Epsilon-180, Canon 20D DSLR, 9 Images x 300 seconds subframe, Total= 45 minutes. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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• Amateur Telescope Makers of Boston ATMoB Observing Awards Program

Astronotes Armagh Planetarium's Stellar Blog! ... Milky Way . Stars . ... This dramatic image depicts Omega Centauri, one of 200 or so globular clusters orbiting our Milky Way galaxy. ... Swarms of tightly packed stars, numbering in the thousands to low millions, globular clusters are cosmic fossils, relics of the early times of our galaxy. Omega Centauri may actually be the core of a smaller galaxy ripped apart and assimilated by our own Milky Way in the distant past. ...

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• M55 globular cluster seen by ESO | Astronotes
• Hubble shows us a spectacular star cluster | Astronotes
• HST | Astronotes - Part 4

... 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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• The AstroStat Slog clusters
• The AstroStat Slog Globular Clusters
• The AstroStat Slog globular cluster

... 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 ...

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• ESO - Thesis Topic: Studying the first galaxy clusters with ALMA
• ESO - Studying the Cosmological Evolution of Galaxy Clusters with (Sub-)mm
• ESO - Dynamics of Low-Mass Stellar Systems: From Star Clusters to Dwarf...

... Credit Copyright: Rogelio Bernal Andreo Explanation: An alluring Comet Hartley 2 cruised through planet Earth's night sky on October 8, passing within about a Full Moon's width of the famous double star cluster in Perseus. ... On October 20, the comet will make its closest approach to Earth, passing within about 17 million kilometers. ... October . ... Publications with keywords: comet - Perseus cluster - Heart Nebula . Publications with words: comet - Perseus cluster - Heart Nebula . ...

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• The Matter of Galaxy Clusters
• Cloud, Clusters and Comet Siding Spring
• MACSJ0025: Two Giant Galaxy Clusters Collide

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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• The Galaxy Gallery Page IX: Clusters of Galaxies

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

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• astro-ph authors/title/abstract search for 'galaxy environment' all years
• astro-ph authors/title/abstract search for 'galaxy merging' all years

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

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The IMF and Star Formation History of the Stellar Clusters in the Vela D Cloud . ... 2005, A , in press . ... M.T. Beltran, J. Brand, R. Cesaroni, F. Fontani, S. Pezzuto, L. Testi, S. Molinari . ... 2005, Proceedings of the IAUS227 "Massive Star Birth: A Crossroads of Astrophysics", in press . ... Francesco Palla . ... Podio, L., Bacciotti, F., Nisini, B., Giannini, T., Massi, F., Eisloeffel, J., Ray, T.P. 2005, Ap Lecture Series, "Cores to Clusters", in press . ... Star Formation Group . ...

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• APOD: 2000 October 15 - Globular Cluster Omega Centauri
• APOD: October 18, 1999 - NGC 3603: An Active Star Cluster
• APOD: October 27, 1999 - In the Heart of the Tarantula Nebula

On 19/20 October 1995 we used GRIM II to attempt spectroscopy of the 2.3 micron CO absorption band in stellar clusters. ... Read Noise Our typical backgrounds in 60s were about 100 DN (about 500 e), and so for faint objects our noise is utterly dominated by the read noise of about 110 e. We can think of three ways to improve this situation: integrate longer; reduce the read noise; or implement multiple reads. ... Flats The quartz lamps were too dim for flats. ...

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... 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. ...

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• SAI OCL Catalog NGC 7788
• SAI OCL Catalog King 13
• SAI OCL Catalog King 20

... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

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• HST this week: 301
• HST this week: 282
• HST this week: 295

Radio data are displayed in the following format: . After the title with name of cluster under examination and with line about kind of data under one, e.g. Radio data [ optical data ] [ radio source identifications ] [ radio spectra (1.0 or 1.1) ] . ... The first line contains the number of radio sources associated with the cluster (these are just those sources with entries in sections 'Radio galaxy', 'Radio source' and 'Radio spectrum' below). ... Radio sources in cluster: 2 # . ...

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• Clusters of Galaxies
• A VLA Survey of Rich Clusters of Galaxies III
• A 1400-MHz Survey of 1478 Abell Clusters of Galaxies

... Home Observing-Events WP_20130708_011_edited-1 . ... Lecture Series 2014-2015 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... This Month's Sky . ... This Month's Sky - 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• IMG_8561 ? Amateur Astronomers Association of New York
• Transit of Venus by AAA member Tom Haeberle ? Amateur Astronomers Association
• DSCN0637 ? Amateur Astronomers Association of New York

... ISC Kosmotras . ... Comments, Opinions Publications Dnepr Program . Dnepr launch record 17 August 2011. ... The success of PICARD launch re enforces our high level of appreciation of the quality of the DNEPR launcher and of the professionalism and efficiency of ISC Kosmotras. ... The distinguishing feature of the THEOS launch by a converted SS-18 ICBM (Dnepr LV) is that it was the first ISC Kosmotras mission from the Yasny launch site that headed southward to its Sun-synchronous target orbit. ...

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• Launch Campaign of DubaiSat-2 Cluster Mission
• International Space Company Kosmotras is Preparing Cluster Launch from Yasny
• Launch Date of Dnepr Cluster Mission

... 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 particles [4]. ...

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... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

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• On current distance scales for open clusters
• Home page of Dmitri Wiebe

Thursday, October 25th, 2012 . ИСТИНА предназначена для учета и анализа научной деятельности сотрудников организаций. http://istina.imec.msu.ru/ (http://istina NULL .imec NULL .msu NULL .ru/) . Tags: новости , публикации . ... No Comments ? ... You are currently browsing the Лаборатория лазерной интерферометрии blog archives for October, 2012. ... Публикации за 2010 . Публикации за 2011 . Публикации за 2012 . ... Лаборатория лазерной интерферометрии is proudly powered by WordPress . ...

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• October 2011 Лаборатория лазерной интерферометрии
• October 2010 Лаборатория лазерной интерферометрии
• Лаборатория лазерной интерферометрии

... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... A star cluster hides star clusters . ... W hile exploring deep Hubble Space Telescope images of a globular star cluster called NGC 6397, astronomers stumbled on a distant background galaxy harboring hundreds of similar clusters. ... A single giant star in NGC 6397 outshines one of the background galaxy's clusters by 10 million times....

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• Video of October 6 asteroid 2008 TC3 | Astronomy.com
• Soft shells and strange star clusters | Astronomy.com
• M31's strange new star clusters | Astronomy.com