... 2000 December 8 . Abell 1795: A Galaxy Cluster's Cooling Flow . ... Astronomers have realized since the early 1970s that the larger swarms, immense clusters of galaxies millions of light-years across, are immersed within tenuous clouds of hot gas which glow strongly in x-rays. ... This Chandra Observatory x-ray image reveals a striking cooling flow in the central regions of the galaxy cluster cataloged as Abell 1795. ... About APOD | ...

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• APOD: 2005 December 30 - The Perseus Cluster of Galaxies
• APOD: 2012 December 6 - 47 Tuc Near the Small Magellanic Cloud
• APOD: 2008 December 29 - NGC 1569: Starburst in a Dwarf Irregular Galaxy

... December 13, 1997 . The Coma Cluster of Galaxies . ... The Coma Cluster of Galaxies pictured is one of the densest clusters known - it contains thousands of galaxies . Each of these galaxies house billions of stars - just as our own Milky Way Galaxy does. ... In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other! Most galaxies in Coma and other clusters are ellipticals , while most galaxies outside of clusters are spirals . ...

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• APOD: December 6, 1999 - M83: The Southern Pinwheel Galaxy from VLT
• APOD: December 18, 1999 - Irregular Galaxy Sextans A
• APOD: 2000 January 4 - Galaxies Cluster Toward the Great Attractor

... The Fornax Cluster of Galaxies . ... 11.01.2013 . ... Although almost 20 times more distant than our neighboring Andromeda galaxy, Fornax is only about 10 percent further that the better known and more populated Virgo cluster of galaxies. ... The picturesque barred spiral galaxy NGC 1365 visible on the lower right is also a prominent Fornax cluster member. ... Publications with keywords: NGC 1365 - Fornax - cluster of galaxies . Publications with words: NGC 1365 - Fornax - cluster of galaxies . ...

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• Abell 1795: A Galaxy Cluster s Cooling Flow
• Spiral Galaxy NGC 1350
• The Matter of Galaxy Clusters

... Our Galaxy . ... Space Flight . ... No Comments Dim and isolated, the dwarf irregular galaxy WolfтАУLundmarkтАУMelotte (WLM) could be described as an astronomical тАЬliving fossilтАЭ as it seems to have developed since it formed billions of years ago [ ] . Continue Reading.. ... Posted on November 24, 2011 | ... 3 Comments The astronomy community is excited by the discovery of an exploding star, a supernova, in a galaxy 21 million light years away in the constellation Ursa Major. ...

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• Omega Centauri: globular cluster of 300,000 stars | Astronotes
• NGC4666: Secrets of a Starburst Galaxy | Astronotes
• M55 globular cluster seen by ESO | Astronotes

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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• The Galaxy Gallery Page IX: Clusters of Galaxies

... Our Milky Way galaxy is host to a number of companions. These companions are gravitationally bound to the Milky Way and are stellar systems in their own right. They include a population of about 150 globular clusters (GCs) and some 30 dwarf satellite galaxies (DSGs). ... These DSGs are more extended and diffuse compared to GCs. In fact the larger satellites of the Milky Way (and other galaxies, for that matter) host their own small systems of GCs. ...

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• ASP: Big Clusters, Tiny Galaxies

... Science . ... Science Users Information > Science and Technical Meetings > Conferences 2011 > Dynamics of Low-Mass Stellar Systems: From Star Clusters to Dwarf Galaxies . ... Science Users Information . ... Observing with ESO Telescopes . ... Science Software . ... ESO-MIDAS . ... Science Data Products Forum . ... ESO Data . ... ESO Science Newsletter . ... We aim at bringing together a mix of astronomers from both observations and theory that work on the dynamics of dwarf galaxies and star clusters...

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• ESO - Studying the Cosmological Evolution of Galaxy Clusters with (Sub-)mm
• ESO - Thesis Topic: Studying the first galaxy clusters with ALMA
• ESO - Galaxy Clusters in the Early Universe

... Please accept our apologies and stay tuned for updates. This workshop is intended as a forum to discuss exploration of the post-recombination era and the early stages of galaxy formation. It is aimed at helping researchers, leaders of ground-based and space astronomy, and policy makers share and understand the latest results in observational cosmology, and identify the most promising strategies for the future. ... Aim and Scope of the Workshop . Tentative Agenda . ... Hotel Information . ...

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• HST this week: 335
• December 2011
• HST this week: 343

... Observing . ... Subscriber Extras . ... Web Extras . ... Globular cluster NGC 2808, elliptical galaxy NGC 2986, and the Sextans Dwarf . ... Observing springtime deep-sky objects with a large telescope . ... Web Extra: Astronomers animate one of the largest galaxy clusters ever observed . ... At the center of the Phoenix Cluster, a large elliptical galaxy lurks where the hot gas is ejected, giving off unprecedented levels of X-rays, which have been observed by the orbiting Chandra X-ray telescope. ...

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• galaxy clusters | Astronomy.com
• What's the difference between globular clusters and dwarf spheroidal galaxies?
• December 2015 | Astronomy.com

... 87.1083Owen+ VIII/29 1400-MHz Survey of 1478 Abell Clusters of Galaxies (Owen+ 1982) ================================================================================ A 1400-MHz Survey of 1478 Abell Clusters of Galaxies Owen F.N., White R.A., Hilldrup K.C., Hanisch R.J. =1982AJ.. ... 0,] Major axis error 70- 71 A2 --- n_MajAxi *[ A, B, C,NR, ] Major axis note 73- 74 I2 arcmin MinAxi *? ... Note on dist-C: Ratio of the distance of the source from the cluster center to the corrected Abell cluster...

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• A 20 cm VLA survey of Abell clusters of galaxies
• A VLA Survey of Rich Clusters of Galaxies III
• A VLA Survey of Rich Clusters of Galaxies I.

... This paper ( Burke et al. 2003 ) describes the creation of one such catalogue - the Southern Serendipitous High-redshift Archival ROSAT Cluster (SHARC) survey - which covers an area of 17.7 deg 2 and consists of 32 clusters with redshifts between 0.05 and 0.7 and X-ray luminosities between 7 x 10 42 and 4 x 10 44 erg/s: the high-redshift subsample contains 16 clusters with = 0.3 and X-ray luminosities greater than 2 x 10 43 erg/s (luminosities are quoted for the 0.5 - 2.0 keV energy band). ... 1997 ...

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• The galaxy M100
• The AstroStat Slog Blog Archive my first AAS. IV. clustering
• The AstroStat Slog Blog Archive Classification and Clustering

... galaxies: bulges galaxies: clusters: general galaxies: clusters: individual: . ... star formation statistics stellar content structure Cosmology ( cosmology :) cosmic background radiation ( cosmology :) cosmological parameters cosmology : miscellaneous cosmology : observations cosmology : theory ( cosmology :) dark ages, reionization, first stars ( cosmology :) dark energy ( cosmology :) dark matter ( cosmology :) diffuse radiation ( cosmology :) distance scale ( cosmology :) early Universe (...

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• Discovery of an isolated dwarf spheroidal galaxy neighboring the Local Group
• articles_alex_01
• articles_flera_en

... All previous such superstars have been found along with many companion stars in the centres of crowded star clusters. The star is known as VFTS 682 from the VLT-FLAMES Tarantula Survey catalogue of the European Southern Observatory's Very Large Telescope (VLT) located at Paranal in Chile by means of the attached FLAMES instrument. ... Although VFTS 682 seems to be alone now it is not very far away from a very rich star cluster known as RMC 136 that contains several similar superstars. ...

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• William Herschel
• Featured Image | International Year of Astronomy in Ireland | Astronomy 2009
• FETTU - Page 1

... Research . ... A rare hybrid morphology radio galaxy . ... In this project we will be able to investigate the environmental effect on star formation and galaxy evolution in individual galaxies falling into the cluster through radio observations of active galactic nuclei (AGN). Current models of galaxy evolution regulate the star formation rates within the simulated galaxies by invoking radio-mode feedback from AGN. ... Julie.Banfield@anu.edu.au . ...

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• GSAOI Super Star Clusters Science Page
• RSAA Annual Report 1998
• Dougal Mackey - Research

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Australia Telescope Online Archive (ATOA) . ... Australia Telescope 20GHz Survey . ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... Major mergers provide an important channel for morphology transformation. ...

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• Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or
• Massive stars in the Galaxy
• ATNF Daily Astronomy Picture

... Confirmation that a mysterious cloud of hydrogen in the Virgo Cluster is a dark galaxy has been published by a team of astronomers . New evidence from NASA's Hubble Space Telescope and the Westerbork Synthesis Radio Telescope in the Netherlands has been used to rule out all but one of the ideas put forward to explain the existence of VIRGOHI 21, an intergalactic gas cloud 50 million light-years from the Earth. ... Only Dark Matter can account for the existence of such a system. ...

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• Pulsar Highlights - A Dozen new MSPs in Globular Clusters
• The Evolution of Galaxies Seen Through The Neutral Hydrogen Line The Evolution
• GOLDMiNe: Virgo cluster optical and HI databases

... Bad Astronomy . ... Bitesize Astronomy . ... The last step encompassed them all with galaxies , and how we discovered that the Milky Way was not the entire Universe. ... And just like those star clusters, there are different kinds of galaxy clusters. ... There are vast clusters of clusters, called superclusters, which contains hundreds of thousands or even millions of galaxies. ... Our own Galaxy has 400 billion stars in it, yet there are clusters out there with millions of galaxies like our own. ...

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• Phil Plait's Bad Astronomy: Info

Alexey Rastorguev's links to DataBases and Catalogs: . ... Open Clusters and Galactic Structure База данных и каталог рассеянных скоплений Галактики . ... USNO: Astronomical Applications Каталоги и базы данных - проекты Морской Обсерватории США . ... HST Science Data Archive Архив данных HST . CFHT Data Archive Архив данных CFHT . ... USNO Recommended Star Catalogs (Zacharias N. et al.) ... USNO Star Catalogs Каталоги USNO . ... USNO-B1.0 Catalog Астрометрический каталог USNO-B1.0 . ...

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• Yuri Nicolaevich Efremov - My Home Page
• Maidanak Lab page

... Astrophysics Group . ... AMI Science . ... Observations of galaxy clusters are central to the AMI science programme. The AMI Small Array is used to observe already-known clusters with high-sensitivity and resolution, allowing us to extract detailed information about individual clusters and to build up statistics about the cluster population. ... Observing galaxy clusters at 15 GHz is tricky because of the contamination from foreground radio sources, which is where the Large Array comes in! ...

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• PPEUC Programme - Cosmic Microwave Background Workshop
• Astrophysics Group AMI-Planck
• Astrophysics Group AMI Publications

... Cosmology and High Energy Astrophysics (Zeldovich-90) | ... 11:2|00:35 |C.Martin |Galaxy Evolution Explorer (GALEX) | ... 11:5|00:20 |Coffee | ... polarization microwave background observations | ... 16:2|00:25 |R.Kneissl |Searching for SZ clusters | ... 17:0|00:35 |A.Vikhlinin |Baryon content of galaxy clusters and cosmology| ... CLUSTERS OF GALAXIES | ... 13:0|00:2|F.Durret |Clusters of galaxies seen in X-rays: war and | ... Clusters/Groups/Galaxies | ... black holesOptical observations of | ...

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• Zeldovich-90: COSMOLOGY AND HIGH ENERGY ASTROPHYCIS
• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN
• z90-program