... 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. ...

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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The File System . Accounts consume disk space as files are created, copied, edited and mail is sent and received. Disk space is a limited resource and various methods are used to manage it. ... If quotas are used on your cluster, use the SHOW QUOTA command to display information about how much space you have used and how much is available to you. ... If free space on the scratch disk falls below 25%, then all files that are more than 4 business days old will be deleted. ...

... 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 ...

... Credit Copyright: D. F. Malin , AAO Explanation: Many stars like our Sun were formed in open clusters. The above open cluster, M11 , contains thousands of stars and is just over three thousand light years distant. ... Open clusters , also called galactic clusters, contain fewer and younger stars than globular clusters. ... Publications with keywords: cluster - M 1 - open cluster . ... Open Star Clusters M35 and NGC 2158 . A Double Star Cluster . ... M7: Open Star Cluster in Scorpius . ...

. Hercules Cluster of Galaxies . Coma Cluster of Galaxies . HST picture of intermediate redshift cluster . Distant HST Cluster ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

... STScI-PRC99-26 HUBBLE IMAGES A SWARM OF ANCIENT STARS This stellar swarm is M80 (NGC 6093), one of the densest of the 147 known globular star clusters in the Milky Way galaxy. ... By analyzing the Wide Field and Planetary Camera 2 (WFPC2) images, including images taken through an ultraviolet filter, astronomers have found a large population of "blue stragglers" in the core of the cluster. These stars appear to be unusually young and more massive than the other stars in a globular cluster. ...

... A collection of codes is compiled for studying some aspects of the large scale clustering of galaxies, clusters and superclusters of galaxies. ... That is why a package of codes for large scale structure analysis cannot be written as a general tool. Nevertheless, a collection of procedures for studying some aspects of the clustering in the Universe can be constructed; inevitably any such package or collection of codes will only be a starting point and will require additional development. ...

... The Pleiades star cluster, also known as the Seven Sisters and Messier 45, is a conspicuous object in the night sky with a prominent place in ancient mythology . ... The stars in the Pleiades are thought to have formed together around 100 million years ago, making them 1/50th the age of our sun, and they lie some 130 parsecs (425 light years ) away. ... Data for these stars are listed in a table below. ... Yes . ... WEBDA Pleiades cluster data . ... M45: The Pleiades Star Cluster (2007 November 18) ...

... Astrophysics Group . Graduate Research Opportunities 2016 . Available research projects/areas . ... Astrophysics Admissions Form . ... This includes active participation in the development of new instruments as well as the use of ground and space observatories. ... Further details are available at the following web site: http://www.mrao.cam.ac.uk/research/extragalactic-group-2/ . ... Our research group has a wide range of expertise in the development of receivers for radio astronomy. ...

Next: A Night At Up: Data Processing Previous: IDL . The image reduction and analysis facility (IRAF) is a powerful tool for the reduction of images. This package is available on the VAX and UNIX machines in the astronomy cluster. Images start as FITS images and are converted to a format that IRAF can read. The images can then be calibrated and reduced. ... This package is a major part of data reduction at Mt. Stony Brook. ... Mon Nov 25 15:41:03 EST 1996 ...

... The local offset will be subtracted from the PHA value. Offset subtraction is performed by additively shifting the parameterized dark frame (CCF DarkFrame , section 4.4.10 ) with the value stored in OFFSET in the second extension of CCF ADUConv (section 4.4.4 ), or with the result of rgsoffsetcalc , if available. ... For the time being, no temperature dependence will be included, however consistency will be checked between the current temperature and the temperature for which CCF ADUConv is valid. ...

This page contains the table of contents and select excerpts only and is not a complete reproduction of this issue. Complete content for online Mercury is available to ASP members and institutional subscribers . ... Reflections: Science Fare , Phil Plait . The Bad Astronomer (a.k.a. Phil Plait) gives a short speech to students who participated in a science fair. ... Astronomy in the News . ... Editorial, Paul Deans . ... Education Matters, David Bruning . ... Reflections, Phil Plait . ...

... 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. ...

. General . Announcement . Participants . Practical details . Program . The first announcement and a preliminary list of confirmed participants are available. Go to the Laboratoire Poncelet home page. to the Steklov Mathematical Instutute home page. Go to the Department of Mathematics SU-HSE home page. Site design by Paul Zinn -Justin .

... Neutral and Ionised Hydrogen in NGC 4214 V. J. McIntyre1,2 1 2 Physics Department, University of Wollongong, Wollongong, NSW 2522, Australia Astrophysics Department, University of Sydney, NSW 2006, Australia vjm@physics.usyd.edu.au Abstract: It is not clear at present how the diffuse ionised gas (DIG) component in galaxies is ionised. ... How porous the ISM must be depends on the (unknown) location of the ionised emission relative to the disk. ... 1996). ... Local H I surface density is 2в1021 cm-3 ...

... Album . News . ... A Peace and Reconciliation project supported by the European Union through the Southern Cluster Partnership . OASES Out-of-this-World Experience: coming soon! ... OASES Show at the John Hewitt Summer School . A 30-page photo book containing photographs from the project is now available on photobox. ... 26 Oct 2010 01:23 . б© 2010 OASES . ...

. Education : . 1976 - 1981 - student of the Department of Astronomy of the ыazan State University . 1981 - 2011 - scientist of the Special Astrophysical Observatory RAS . October, 2001 - defence of PhD dissertation . ' Photometric study of systems of clusters of galaxies ' . ( download 2 эТ, available only Russian version) . Supervisor: PhD Kopylov A.I. Scienetific interests : . photometry of galaxies, . clusters and superclusters of galaxies, . large-scale structure . Back to my homepage .

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...