... In our numerical experiments we mainly considered two sets of simulated data provided by R. Hanisch, namely the Star Cluster and the Elliptical Galaxy 2 (Hanisch 1993). Fig. 1 shows the relative error (the inverse of the signal-to-noise ratio) achieved using the Tikhonov method in the restoration of the above mentioned images. ... As a result, Tikhonov regularization takes about sec on the initial mesh and sec on an extended mesh (IBM RISC 6000/560 with ESSL 2). ...

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• Other Acquisition Information
• ACS Instrument Handbook for Cycle 20
• GHRS Instrument Handbook

... Close," however, is only relative to other clusters of galaxies , since light takes about 50 million years to reach us from A2199. All of the fuzzy objects in the above picture are galaxies , but these galaxies do not contain most of the matter in the cluster. By studying clusters like A2199, astronomers conclude that some form of dark matter dominates the motion of the bright galaxies. ... Publications with keywords: galaxy cluster . Publications with words: galaxy cluster . ...

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• Астронет > Galaxy Cluster A2199
• Journal "Peremennye Zvezdy"
• COBE Dipole: Speeding Through the Universe

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

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The velocity corrected for infall of the Local Group towards Virgo is noted vvir . It is calculated as: vvir = vlg + 208 cos(theta) Where vlg is the velocity relative to the Local Group, 208 km/s is the infall velocity of the Local Group according to Theureau et al. 1998 and Terry et al. 2002 and where theta is the angular distance between the observed direction and the direction of the center of the Virgo cluster (SG 104 -2). ...

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• A 20 cm VLA survey of Abell clusters of galaxies
• LEDA data base
• HyperLEDA documentation: parameter: vdis

... A document window is shown, with 8 lines (numbered 1 to 8), each 24px high. The text of the "outer" box (at the end of line 1, halfway into line 2, and halfway into line 3) is shifted upward 12px. The text of the "inner" box, thought shifted upward as well, has been relatively positioned so that it lies in its normal flow position at the end of line 2. ... The lines, as they appear in the image, contain: Start 1 Beginning of body contents. 2 of outer contents. Inner contents. ...

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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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• Heliocentric Cosmology Historical Cosmologies

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

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... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ­ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

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• http://www.mrao.cam.ac.uk/~anthony/latex/Fujita.ps
• PPEUC Programme - Cosmic Microwave Background Workshop
• Astrophysics Group AMI Science

... No effect to the flux comparison. pn hard band spectral fits Hard band (2-7 keV ) temperatures measured by XMM-Newton/pn,XMMNewton/ MOS , Chandra/ ACIS , BeppoSAX/MECS, Suzaku/XIS pn / combined MOS1 + MOS2 MOS1 +2 yields temperatures ~2% lower than pn on average J MOS1 / MOS2 MOS1 yields temperatures ~4% higher than MOS2 (~3) on average MOS1 effarea is a bit too soft if ... DON'T FUDGE TOO MUCH!) ...

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• Generation from In-Orbit Data
• Relative Corrections

. ћ . Наши юбиляры . љљљљљљљ љљљљљљљљљ . ћ Сотрудники отдела . ћ Наша научная работа . ћ Семинар по Звездной астрономии . ћ Конференции . ћ Общий Каталог Переменных Звезд . ћ Каталог рассеянных скоплений . ћ Московская школа звездной астрономии . ћ Юбилеи сотрудников . ћ Избранные публикации . ћ Педагогическая и популяризаторская деятельность . ћ Наши интернет-ресурсы и другие полезные ресурсы . ћ Ссылки на каталоги и базы данных . ћ Фотогалерея . Присылайте Ваши вопросы и комментарии Ольге Дурлевич

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• Stars proper motions in NGC7063 open cluster
• PostgreSQL related writings
• APOD: January 22, 1997 - Galaxy Cluster A2199

Find Similar Abstracts . ... The velocity of clusters of galaxies relative to the microwave background. ... BACKGROUND RADIATION, GALACTIC CLUSTERS, MICROWAVE SCATTERING, VELOCITY MEASUREMENT, HIGH TEMPERATURE GASES, MICROWAVES, POLARIZED RADIATION, RADIAL VELOCITY, RADIO ASTRONOMY, THOMSON SCATTERING . ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

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• The Stopping Radius
• Seminars

... Q 12.649 0.523 0.342 -0.108 4444 -4.647 -4.582 "n6231_ 178" 16 53 48.63 -41 51 54.1 J2000.0 ! ... A few lines are then added to the top (see readme_asc2dxf for details) to produce input for asc2dxf :in.coo: n6231cp6.dxf slot line 2.00 43.00 9.00 43.00 point 9.773 19.026 n6231 _ 171 Q 12.649 11.236 57.382 n6231 _ 178 I 14.533 ... the output of this program is as follows :n6231cp6.dxf: 0 SECTION 2 ENTITIES 0 CIRCLE 8 1 62 3 10 43.00 20 43.00 30 0.000 40 43.00 0 ...

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• Proposed Facility
• Blue Straggler Stars
• GSAOI Orion Nebula Cluster Science Page

... Green and blue curves - CYGAM telescope (squares - no constraints on the angle a , triangles - a <0.5 0 ); red curve - EGRET telescope. Effective area versus photon incidence angle to relative the longitudinal telescope axis (squares - no constraints on the angle a , triangles - a <0.5 0 , spectral index g= 2). ... Angular resolution for normal to the axis X incidence versus source power law spectrum index (squares- no constraints on the angle a , triangles- a <0,5 0 ). ... CYGAM (PDF, 450 Kb) . ...

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• Frames of Reference: The Basics
• The Theory of Relativity
• Polar Orbiting Satellites

... Mindful of these biases, I can now explore the relations between the measured rotation periods and various other observables. The hypothesis behind monitoring stellar variability is that active stars have asymmetric spot distributions on their photospheres. ... They found that only stars with rotation periods greater than seven days show variations greater than 0.4 magnitudes at I. Bouvier et al . ... 1993a) demonstrated a relation between X--ray flux and spectral type in ZAMS stars. ...

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• The AstroStat Slog Globular Clusters
• The AstroStat Slog Blog Archive my first AAS. IV. clustering
• Evolutionary Effects

Here you can see an image of the central part of the Fornax Cluster taken from the Digital Sky Survey. ... We studied the globular cluster systems (GCSs) of 5 early type galaxies in the Fornax cluster: NGC 1374, NGC1379, NGC 1387, NGC 1427, and the central giant elliptical NGC 1399. ... See our papers ``The central region of the Fornax cluster - I. A catalog and photometric properties of galaxies in selected CCD fields'' and ``The central region of the Fornax cluster - II. ...

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• Scaling relations of dwarf galaxies
• Location of ESO HQ Relative to Munich | ESO
• ESO - VIMOS Science Verification Programs at Melipal/UT3

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

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• important_en

... Bad Astronomy . ... Bitesize Astronomy . ... The next step up are true clusters, called open clusters . Open clusters (sometimes misleadingly called "galactic clusters") are groups of stars ranging in size from a few dozen stars up to tens of thousands. ... The youngest is about 1 or 2 million years old, while the oldest is about 6 or 7 billion years, making it just older than our own solar system. ... So by looking at the stars in the cluster we can tell pretty well how old they are. ...

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• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Misconceptions

Federal Communications Commission (ix)(A) For a station authorized pursuant to § 73.215 or Sec. § 73.509, a showing that the root mean square (RMS) of the measured composite antenna pattern (encompassing both the horizontally and vertically polarized radiation components (in relative field)) is at least 85 percent of the RMS of the authorized composite directional antenna pattern (in relative field). ...

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• ALFA Front End Optics
• Arecibo-related presentations at AAS 209

... Participants . ... Traditionally, the workshop takes place at three locations: the Independent University of Moscow (3 days), the Steklov Mathematical Institute (2 days) and the Higher School of Economics (1 day). ... Organizing Committee: Leonid Chekhov (Steklov and Poncelet), Sergei Lando (HSE), Igor Krichever (HSE and Columbia Univ.) ... This covers also the welcome party and the conference dinner. ... Go to the Laboratoire Poncelet home page. to the Steklov Mathematical Instutute home page. ...

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• Conference Zeta functions

We investigate the relative importance of starbursts and active galactic nuclei (AGN) in nuclear activities of ultraluminous infrared galaxies (ULIRGs) based on chemodynamical simulations combined with spectrophotometric synthesis codes. We numerically investigate both the gas accretion rates (ARs; m acc ) on to supermassive black holes (SMBHs) and the star formation rates (SFRs; m sf ) in ULIRGs formed by gas-rich galaxy mergers and thereby discuss what powers ULIRGs. ...

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• Integer Indices are 0-relative
• Velocities in Miriad
• WALLABY - the ASKAP HI All-Sky Survey